@article{StaatVu2012, author = {Staat, Manfred and Vu, Duc Khoi}, title = {Limit analysis of flaws in pressurized pipes and cylindrical vessels Part II: Circumferential defects}, series = {Engineering Fracture Mechanics ; 97(2013), H. 1}, volume = {97}, journal = {Engineering Fracture Mechanics ; 97(2013), H. 1}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0013-7944}, doi = {10.1016/j.engfracmech.2012.05.017}, pages = {314 -- 333}, year = {2012}, abstract = {Upper and lower bound theorems of limit analyses have been presented in part I of the paper. Part II starts with the finite element discretization of these theorems and demonstrates how both can be combined in a primal-dual optimization problem. This recently proposed numerical method is used to guide the development of a new class of closed-form limit loads for circumferential defects, which show that only large defects contribute to plastic collapse with a rapid loss of strength with increasing crack sizes. The formulae are compared with primal-dual FEM limit analyses and with burst tests. Even closer predictions are obtained with iterative limit load solutions for the von Mises yield function and for the Tresca yield function. Pressure loading of the faces of interior cracks in thick pipes reduces the collapse load of circumferential defects more than for axial flaws. Axial defects have been treated in part I of the paper.}, language = {en} } @article{StaatTrenzLohmannetal.2012, author = {Staat, Manfred and Trenz, Eva and Lohmann, Philipp and Frotscher, Ralf and Klinge, Uwe and Tabaza, Ruth and Kirschner-Hermanns, Ruth}, title = {New measurements to compare soft tissue anchoring systems in pelvic floor surgery}, series = {Journal of Biomedical Materials Research Part B: Applied Biomaterials}, volume = {100B}, journal = {Journal of Biomedical Materials Research Part B: Applied Biomaterials}, number = {4}, publisher = {Wiley}, address = {Hoboken, NJ}, issn = {1552-4981}, doi = {10.1002/jbm.b.32654}, pages = {924 -- 933}, year = {2012}, abstract = {Suburethral slings as well as different meshes are widely used treating stress urinary incontinence and prolaps in women. With the development of MiniSlings and special meshes using less alloplastic material anchorage systems become more important to keep devices in place and to put some tension especially on the MiniSlings. To date, there are many different systems of MiniSlings of different companies on the market which differ in the structure of the used meshes and anchors. A new objective measurement method to compare different properties of MiniSling systems (mesh and anchor) is presented in this article. Ballistic gelatine acts as soft tissue surrogate. Significant differences in parameters like pull-out strength of anchors or shrinkage of meshes under loading conditions have been determined. The form and size of the anchors as well as the structural stability of the meshes are decisive for a proper integration. The tested anchorings sytems showed markedly different mechanical function at their respective load bearing capacity. As the stable fixation of the device in tissue is a prerequisite for a permanet reinforcement, the proposed test system permits further optimisation of anchor and mesh devices to improve the success of the surgical treatment}, language = {en} } @article{StaatTranKreissig2008, author = {Staat, Manfred and Tran, Thanh Ngoc and Kreißig, R.}, title = {Load bearing capacity of thin shell structures made of elastoplastic material by direct methods}, series = {Technische Mechanik. 28 (2008), H. 3-4}, journal = {Technische Mechanik. 28 (2008), H. 3-4}, pages = {299 -- 309}, year = {2008}, language = {en} } @article{StaatSponagelNguyen2010, author = {Staat, Manfred and Sponagel, Stefan and Nguyen, Nhu Huynh}, title = {Experiment and material model for soft tissue materials}, series = {Constitutive models for rubber VI : proceedings of the sixth European Conference on Constitutive Models for Rubber, Dresden, Germany, 7 - 10 September 2009 / eds. Gert Heinrich ...}, journal = {Constitutive models for rubber VI : proceedings of the sixth European Conference on Constitutive Models for Rubber, Dresden, Germany, 7 - 10 September 2009 / eds. Gert Heinrich ...}, publisher = {CRC Press}, address = {Boca Raton [u.a.]}, isbn = {978-0-415-56327-7}, pages = {465 -- 470}, year = {2010}, language = {en} } @article{StaatSchwartzLangetal.2003, author = {Staat, Manfred and Schwartz, M. and Lang, H. and Wirtz, K. and Heitzer, M.}, title = {Design by Analysis of Pressure Components by non-linear Optimization}, series = {The 10th International Conference on Pressure Vessel Technology, July 7-10, 2003, Vienna, Austria, Proceedings ICPVT-10 / Zeman, J. L. [ed]}, journal = {The 10th International Conference on Pressure Vessel Technology, July 7-10, 2003, Vienna, Austria, Proceedings ICPVT-10 / Zeman, J. L. [ed]}, publisher = {{\"O}GS, {\"O}sterreichische Gesellschaft f{\"u}r Schweißtechnik}, address = {Wien}, isbn = {3950152814}, pages = {59 -- 65}, year = {2003}, language = {en} } @article{StaatKuehnHaugeretal.2004, author = {Staat, Manfred and K{\"u}hn, R. and Hauger, W. and Sponagel, Stefan}, title = {An Interpretation of Wolff's Law}, series = {Biomedizinische Technik. 49 (2004)}, journal = {Biomedizinische Technik. 49 (2004)}, isbn = {0932-4666}, pages = {1020 -- 1021}, year = {2004}, language = {de} } @article{StaatHeitzerReinersetal.2003, author = {Staat, Manfred and Heitzer, M. and Reiners, H. and Schubert, F.}, title = {Shakedown and ratchetting under tension-torsion loadings: analysis and experiments}, series = {Nuclear Engineering and Design. 225 (2003), H. 1}, journal = {Nuclear Engineering and Design. 225 (2003), H. 1}, isbn = {0029-5493}, pages = {11 -- 26}, year = {2003}, language = {en} } @article{StaatHeitzerLangetal.2005, author = {Staat, Manfred and Heitzer, M. and Lang, H. and Wirtz, K.}, title = {Direct Finite Element Route for Design-by-Analysis of Pressure Components}, series = {International Journal of Pressure Vessels and Piping. 82 (2005), H. 1}, journal = {International Journal of Pressure Vessels and Piping. 82 (2005), H. 1}, isbn = {0308-0161}, pages = {61 -- 67}, year = {2005}, language = {en} } @article{StaatHeitzerHicken1998, author = {Staat, Manfred and Heitzer, M. and Hicken, E.F.}, title = {LISA, ein europ{\"a}isches Projekt zur direkten Berechnung der Tragf{\"a}higkeit duktiler Strukturen.}, year = {1998}, language = {de} } @article{StaatHeitzer1997, author = {Staat, Manfred and Heitzer, M.}, title = {Limit and Shakedown Analysis for Plastic Safety of Complex Structures}, series = {Transactions of the 14th International Conference on Structural Dynamics in Reactor Technology (SMiRT-14) / Livolant, M. [ed]}, journal = {Transactions of the 14th International Conference on Structural Dynamics in Reactor Technology (SMiRT-14) / Livolant, M. [ed]}, address = {Lyon}, pages = {33 -- 40}, year = {1997}, language = {en} } @article{StaatHeitzer1997, author = {Staat, Manfred and Heitzer, M.}, title = {Limit and Shakedown Analysis Using a General Purpose Finite Element Code}, series = {Proceedings of NAFEMS World Congress '97 on Design, Simulation \& Optimisation : reliability \& applicability of computational methods ; Stuttgart, Germany, 9 - 11 April 1997}, journal = {Proceedings of NAFEMS World Congress '97 on Design, Simulation \& Optimisation : reliability \& applicability of computational methods ; Stuttgart, Germany, 9 - 11 April 1997}, publisher = {NAFEMS}, address = {Glasgow}, isbn = {1-87437-620-4}, pages = {522 -- 533}, year = {1997}, language = {en} } @article{StaatHeitzer2000, author = {Staat, Manfred and Heitzer, M.}, title = {Traglastanalyse - ein strukturmechanisches Verfahren zur Beurteilung von gerissenen Bauteilen und Verbindungen}, series = {Festigkeits- und Bruchverhalten von F{\"u}geverbindungen : 32. Tagung des DVM-Arbeitskreises Bruchvorg{\"a}nge ; 22. und 23. Februar 2000 in Berlin / Richard, H. A. [Hrsg]}, journal = {Festigkeits- und Bruchverhalten von F{\"u}geverbindungen : 32. Tagung des DVM-Arbeitskreises Bruchvorg{\"a}nge ; 22. und 23. Februar 2000 in Berlin / Richard, H. A. [Hrsg]}, publisher = {Deutscher Verband f{\"u}r Materialforschung und -pr{\"u}fung}, address = {Berlin}, pages = {183 -- 192}, year = {2000}, language = {de} } @article{StaatHeitzer2000, author = {Staat, Manfred and Heitzer, M.}, title = {Reliability Analysis of Elasto-Plastic Structures under Variable Loads}, series = {Inelastic analysis of structures under variable loads : theory and engineering applications / Maier, G.; Weichert, D. [ed]}, journal = {Inelastic analysis of structures under variable loads : theory and engineering applications / Maier, G.; Weichert, D. [ed]}, publisher = {Kluwer Academic Publ.}, address = {Dordrecht}, isbn = {0-7923-6645-X}, pages = {269 -- 288}, year = {2000}, language = {en} } @article{StaatHeitzer2000, author = {Staat, Manfred and Heitzer, M.}, title = {Direct FEM approach to design-by-analysis of pressurized components}, series = {Achema 2000 : Sonderausgabe / Linde. [Hrsg.: Linde AG. Red.: Volker R. Leski]}, journal = {Achema 2000 : Sonderausgabe / Linde. [Hrsg.: Linde AG. Red.: Volker R. Leski]}, publisher = {Linde AG}, address = {Wiesbaden}, pages = {79 -- 81}, year = {2000}, language = {de} } @article{StaatHeitzer1999, author = {Staat, Manfred and Heitzer, M.}, title = {Structural Reliability Analysis of Elasto-Plastic Structures}, series = {Safety and reliability : proceedings of ESREL '99, the Tenth European Conference on Safety and Reliability, Munich-Garching, Germany, 13 - 17 September 1999 / Schu{\"e}ller, G. I.; Kafka, P. [eds]}, journal = {Safety and reliability : proceedings of ESREL '99, the Tenth European Conference on Safety and Reliability, Munich-Garching, Germany, 13 - 17 September 1999 / Schu{\"e}ller, G. I.; Kafka, P. [eds]}, publisher = {Balkema}, address = {Rotterdam}, isbn = {90-5809-109-0}, pages = {513 -- 518}, year = {1999}, language = {en} } @article{StaatHeitzer2002, author = {Staat, Manfred and Heitzer, M.}, title = {Limit and Shakedown Analysis with Uncertain Data}, series = {Stochastic optimization techniques : numerical methods and technical applications / Marti, K. [ed]}, journal = {Stochastic optimization techniques : numerical methods and technical applications / Marti, K. [ed]}, publisher = {Springer}, address = {Heidelberg}, isbn = {3-540-42889-5}, pages = {241 -- 254}, year = {2002}, language = {en} } @article{StaatHeitzer2003, author = {Staat, Manfred and Heitzer, M.}, title = {Probabilistic limit and shakedown problems}, series = {Numerical Methods for Limit and Shakedown Analysis. Deterministic and Probabilistic Approach. NIC Series Vol. 15 / Ed. by Staat, M; Heitzer, M.}, journal = {Numerical Methods for Limit and Shakedown Analysis. Deterministic and Probabilistic Approach. NIC Series Vol. 15 / Ed. by Staat, M; Heitzer, M.}, publisher = {John von Neumann Institute for Computing (NIC)}, address = {J{\"u}lich}, isbn = {3-00-010001-6}, pages = {217 -- 268}, year = {2003}, language = {en} } @article{StaatHeitzer1999, author = {Staat, Manfred and Heitzer, M.}, title = {FEM-computation of load carrying capacity of highly loaded passive components by direct methods. Heitzer, M. ; Staat, M.}, series = {Nuclear Engineering and Design. 193 (1999), H. 3}, journal = {Nuclear Engineering and Design. 193 (1999), H. 3}, isbn = {0029-5493}, pages = {349 -- 358}, year = {1999}, language = {en} } @article{StaatFioriniLensaetal.1997, author = {Staat, Manfred and Fiorini, G. L. and Lensa, W. von and Burgazzi, L.}, title = {Reliability Methods for Passive Safety Functions}, series = {Proceedings of the SMiRT 14 Post Conference Seminar No 18 on Passive Safety Features in Nuclear Installations}, journal = {Proceedings of the SMiRT 14 Post Conference Seminar No 18 on Passive Safety Features in Nuclear Installations}, address = {Pisa}, year = {1997}, language = {en} } @article{StaatBaroudTopcuetal.2008, author = {Staat, Manfred and Baroud, G. and Topcu, M. and Sponagel, Stefan}, title = {Soft Materials in Technology and Biology - Characteristics, Properties, and Parameter Identification}, series = {Bioengineering in Cell and Tissue Research / Artmann, Gerhard M. ; Chien, Shu (Eds.)}, journal = {Bioengineering in Cell and Tissue Research / Artmann, Gerhard M. ; Chien, Shu (Eds.)}, publisher = {Springer}, address = {Berlin}, isbn = {978-3-540-75408-4}, pages = {253 -- 315}, year = {2008}, language = {en} } @article{StaatBallmann1988, author = {Staat, Manfred and Ballmann, J.}, title = {Computation of impacts on elastic solids by methods of bicharacteristics}, series = {Computational Mechanics '88 : theory and applications ; proceedings of the International Conference on Computational Engineering Science April 10-14, 1988, Atlanta, GA, USA ; vol. 2}, journal = {Computational Mechanics '88 : theory and applications ; proceedings of the International Conference on Computational Engineering Science April 10-14, 1988, Atlanta, GA, USA ; vol. 2}, pages = {1719 -- 1722}, year = {1988}, abstract = {Shock waves, explosions, impacts or cavitation bubble collapses may generate stress waves in solids causing cracks or unexpected dammage due to focussing, physical nonlinearity or interaction with existing cracks. There is a growing interest in wave propagation, which poses many novel problems to experimentalists and theorists.}, subject = {Bicharakteristikenverfahren}, language = {en} } @article{StaatBallmann1989, author = {Staat, Manfred and Ballmann, J.}, title = {Zur Problematik tensorieller Verallgemeinerungen einachsiger nichtlinearer Materialgesetze}, series = {Zeitschrift f{\"u}r angewandte Mathematik und Mechanik : ZAMM. 69 (1989), H. 2}, journal = {Zeitschrift f{\"u}r angewandte Mathematik und Mechanik : ZAMM. 69 (1989), H. 2}, isbn = {0946-8463}, doi = {10.1515/9783112553169-006}, pages = {73 -- 81}, year = {1989}, language = {de} } @article{StaatBallmann1988, author = {Staat, Manfred and Ballmann, J.}, title = {Wave Propagation and Focussing in Plates}, series = {Impact loading and dynamic behaviour of materials : Papers presented at the International Conference on Impact Loading and Dynamic Behaviour of Materials, Vol. 2 / Chiem, C. Y.; Kunze, L. (u.a.) [eds]}, journal = {Impact loading and dynamic behaviour of materials : Papers presented at the International Conference on Impact Loading and Dynamic Behaviour of Materials, Vol. 2 / Chiem, C. Y.; Kunze, L. (u.a.) [eds]}, publisher = {DGM Informationsges.}, address = {Oberursel}, year = {1988}, language = {en} } @article{StaatBallmann1985, author = {Staat, Manfred and Ballmann, J.}, title = {Anisotrope Ausbreitung und Fokussierung von Beschleunigungswellen in vorgespannten nichtlinearelastischen Scheiben}, series = {Wellenfokussierung, Kolloquium des SFB 27, RWTH Aachen}, journal = {Wellenfokussierung, Kolloquium des SFB 27, RWTH Aachen}, address = {Aachen}, pages = {140 -- 158}, year = {1985}, language = {de} } @article{Staat1996, author = {Staat, Manfred}, title = {Problems and Chances for Probabilistic Fracture Mechanics in the Analysis of Steel Pressure Boundary Reliability}, series = {Technical feasibility and reliability of passive safety systems for nuclear power plants. Proceedings of an Advisory Group Meeting held in J{\"u}lich, 21-24 November 1994}, journal = {Technical feasibility and reliability of passive safety systems for nuclear power plants. Proceedings of an Advisory Group Meeting held in J{\"u}lich, 21-24 November 1994}, address = {Vienna}, pages = {43 -- 55}, year = {1996}, language = {en} } @article{Staat1993, author = {Staat, Manfred}, title = {Sensitivity of and Influences on the Reliability of an HTR-Module Primary Circuit Pressure Boundary}, series = {Transactions of the 12th International Conference on Structural Mechanics in Reactor Technology (SMiRT-12) / Kussmaul, K. [ed]}, journal = {Transactions of the 12th International Conference on Structural Mechanics in Reactor Technology (SMiRT-12) / Kussmaul, K. [ed]}, publisher = {Elsevier}, address = {Amsterdam}, isbn = {0-444-81515-5}, pages = {147 -- 152}, year = {1993}, language = {en} } @article{Staat1993, author = {Staat, Manfred}, title = {Reliability of the Primary Circuit Pressure Boundary of an HTR-Module under Accident Conditions}, series = {Safety and reliability assessment : an integral approach ; ESREL'93 ; proceedings of the European Safety and Reliability Conference, Munich, Germany, May 10th - 12th 1993 / Kafka, P. [ed]}, journal = {Safety and reliability assessment : an integral approach ; ESREL'93 ; proceedings of the European Safety and Reliability Conference, Munich, Germany, May 10th - 12th 1993 / Kafka, P. [ed]}, publisher = {Elsevier}, address = {Amsterdam}, isbn = {0-444-81561-9}, pages = {331 -- 342}, year = {1993}, language = {en} } @article{Staat1992, author = {Staat, Manfred}, title = {Probabilistische Bewertung des bruchmechanischen Verhaltens der Prim{\"a}rkreisdruckumschließung eines HTR-Moduls}, year = {1992}, language = {de} } @article{Staat1991, author = {Staat, Manfred}, title = {Versagenswahrscheinlichkeit der Prim{\"a}rkreisdruckumschließung eines HTR-Moduls zur Prozeßw{\"a}rmegewinnung unter St{\"o}rfallbedingungen bei verschiedenen Versagensmoden}, year = {1991}, language = {de} } @article{Staat2002, author = {Staat, Manfred}, title = {Some Achievements of the European Project LISA for FEM Based Limit and Shakedown Analysis}, series = {Computational mechanics : developments and applications, 2002 : presented at the 2002 ASME Pressure Vessels and Piping Conference, Vancouver, British Columbia, Canada, August 5 - 9. / Badie, N. [ed]}, journal = {Computational mechanics : developments and applications, 2002 : presented at the 2002 ASME Pressure Vessels and Piping Conference, Vancouver, British Columbia, Canada, August 5 - 9. / Badie, N. [ed]}, publisher = {American Society of Mechanical Engineers}, address = {New York}, isbn = {0791846520}, pages = {177 -- 185}, year = {2002}, language = {en} } @article{Staat1991, author = {Staat, Manfred}, title = {Versagenswahrscheinlichkeit der Prim{\"a}rkreisdruckumschließung eines HTR-Moduls zur Prozeßw{\"a}rmegewinnung unter St{\"o}rfallbedingungen}, series = {Jahrestagung Kerntechnik '91 / Kerntechnische Gesellschaft e.V. ; Deutsches Atomforum e.V}, journal = {Jahrestagung Kerntechnik '91 / Kerntechnische Gesellschaft e.V. ; Deutsches Atomforum e.V}, publisher = {INFORUM}, address = {Bonn}, pages = {123 -- 126}, year = {1991}, language = {de} } @article{Staat1987, author = {Staat, Manfred}, title = {Anisotrope Wellenausbreitung in isotropen hyperelastischen Scheiben}, series = {Zeitschrift f{\"u}r angewandte Mathematik und Mechanik : ZAMM. 67 (1987), H. 4}, journal = {Zeitschrift f{\"u}r angewandte Mathematik und Mechanik : ZAMM. 67 (1987), H. 4}, isbn = {0946-8463}, pages = {T241 -- T243}, year = {1987}, language = {de} } @article{Staat2004, author = {Staat, Manfred}, title = {Plastic collapse analysis of longitudinally flawed pipes and vessels}, series = {Nuclear Engineering and Design. 234 (2004), H. 1-3}, journal = {Nuclear Engineering and Design. 234 (2004), H. 1-3}, isbn = {0029-5493}, pages = {25 -- 43}, year = {2004}, language = {en} } @article{Staat2005, author = {Staat, Manfred}, title = {Local and global collapse pressure of longitudinally flawed pipes and cylindrical vessels}, series = {International Journal of Pressure Vessels and Piping. 82 (2005), H. 3}, journal = {International Journal of Pressure Vessels and Piping. 82 (2005), H. 3}, isbn = {0308-0161}, pages = {217 -- 225}, year = {2005}, language = {en} } @article{Staat1993, author = {Staat, Manfred}, title = {Failure probabilities of the primary circuit pressure boundary of an HTR-Module for process heat generation under accident conditions for different failure modes}, series = {Nuclear Engineering and Design. 144 (1993), H. 1}, journal = {Nuclear Engineering and Design. 144 (1993), H. 1}, isbn = {0029-5493}, pages = {53 -- 67}, year = {1993}, language = {en} } @article{Staat1995, author = {Staat, Manfred}, title = {Reliability of an HTR-module primary circuit pressure boundary Influences, sensitivity, and comparison with a PWR}, series = {Nuclear Engineering and Design. 158 (1995), H. 2-3}, journal = {Nuclear Engineering and Design. 158 (1995), H. 2-3}, isbn = {0029-5493}, pages = {333 -- 340}, year = {1995}, language = {en} } @article{Staat1996, author = {Staat, Manfred}, title = {Probabilistic assessment of the fracture mechanics behaviour of an HTR-module primary circuit pressure boundary}, series = {Nuclear Engineering and Design. 160 (1996), H. 1-2}, journal = {Nuclear Engineering and Design. 160 (1996), H. 1-2}, isbn = {0029-5493}, pages = {221 -- 236}, year = {1996}, language = {en} } @article{Staat2013, author = {Staat, Manfred}, title = {Limit and shakedown analysis under uncertainty}, series = {International journal of computational methods : IJCM}, journal = {International journal of computational methods : IJCM}, publisher = {World Scientific Publishing}, address = {Singapore}, issn = {0219-8762}, pages = {Publ. online}, year = {2013}, language = {en} } @article{Staat2004, author = {Staat, Manfred}, title = {Plastic collapse analysis of longitudinally flawed pipes and vessels}, year = {2004}, abstract = {Improved collapse loads of thick-walled, crack containing pipes and vessels are suggested. Very deep cracks have a residual strength which is better modelled by a global limit load. In all burst tests, the ductility of pressure vessel steels was sufficiently high whereby the burst pressure could be predicted by limit analysis with no need to apply fracture mechanics. The relative prognosis error increases however, for long and deep defects due to uncertainties of geometry and strength data.}, subject = {Druckbeh{\"a}lter}, language = {en} } @article{Staat2001, author = {Staat, Manfred}, title = {Cyclic plastic deformation tests to verify FEM-based shakedown analyses}, year = {2001}, abstract = {Fatigue analyses are conducted with the aim of verifying that thermal ratcheting is limited. To this end it is important to make a clear distintion between the shakedown range and the ratcheting range (continuing deformation). As part of an EU-supported research project, experiments were carried out using a 4-bar model. The experiment comprised a water-cooled internal tube, and three insulated heatable outer test bars. The system was subjected to alternating axial forces, superimposed with alternating temperatures at the outer bars. The test parameters were partly selected on the basis of previous shakedown analyses. During the test, temperatures and strains were measured as a function of time. The loads and the resulting stresses were confirmed on an ongoing basis during performance of the test, and after it. Different material models were applied for this incremental elasto-plastic analysis using the ANSYS program. The results of the simulation are used to verify the FEM-based shakedown analysis.}, subject = {Materialerm{\"u}dung}, language = {en} } @article{Staat2005, author = {Staat, Manfred}, title = {Local and global collapse pressure of longitudinally flawed pipes and cylindrical vessels}, year = {2005}, abstract = {Limit loads can be calculated with the finite element method (FEM) for any component, defect geometry, and loading. FEM suggests that published long crack limit formulae for axial defects under-estimate the burst pressure for internal surface defects in thick pipes while limit loads are not conservative for deep cracks and for pressure loaded crack-faces. Very deep cracks have a residual strength, which is modelled by a global collapse load. These observations are combined to derive new analytical local and global collapse loads. The global collapse loads are close to FEM limit analyses for all crack dimensions.}, subject = {Finite-Elemente-Methode}, language = {en} } @article{Staat2005, author = {Staat, Manfred}, title = {Direct finite element route for design-by-analysis of pressure components}, year = {2005}, abstract = {In the new European standard for unfired pressure vessels, EN 13445-3, there are two approaches for carrying out a Design-by-Analysis that cover both the stress categorization method (Annex C) and the direct route method (Annex B) for a check against global plastic deformation and against progressive plastic deformation. This paper presents the direct route in the language of limit and shakedown analysis. This approach leads to an optimization problem. Its solution with Finite Element Analysis is demonstrated for mechanical and thermal actions. One observation from the examples is that the so-called 3f (3Sm) criterion fails to be a reliable check against progressive plastic deformation. Precise conditions are given, which greatly restrict the applicability of the 3f criterion.}, subject = {Einspielen }, language = {en} } @article{Staat2003, author = {Staat, Manfred}, title = {Shakedown and ratchetting under tension-torsion loadings: analysis and experiments}, year = {2003}, abstract = {Structural design analyses are conducted with the aim of verifying the exclusion of ratchetting. To this end it is important to make a clear distinction between the shakedown range and the ratchetting range. The performed experiment comprised a hollow tension specimen which was subjected to alternating axial forces, superimposed with constant moments. First, a series of uniaxial tests has been carried out in order to calibrate a bounded kinematic hardening rule. The load parameters have been selected on the basis of previous shakedown analyses with the PERMAS code using a kinematic hardening material model. It is shown that this shakedown analysis gives reasonable agreement between the experimental and the numerical results. A linear and a nonlinear kinematic hardening model of two-surface plasticity are compared in material shakedown analysis.}, subject = {Einspielen }, language = {en} } @article{Staat2000, author = {Staat, Manfred}, title = {Basis Reduction for the Shakedown Problem for Bounded Kinematic Hardening Material}, year = {2000}, abstract = {Limit and shakedown analysis are effective methods for assessing the load carrying capacity of a given structure. The elasto-plastic behavior of the structure subjected to loads varying in a given load domain is characterized by the shakedown load factor, defined as the maximum factor which satisfies the sufficient conditions stated in the corresponding static shakedown theorem. The finite element dicretization of the problem may lead to very large convex optimization. For the effective solution a basis reduction method has been developed that makes use of the special problem structure for perfectly plastic material. The paper proposes a modified basis reduction method for direct application to the two-surface plasticity model of bounded kinematic hardening material. The considered numerical examples show an enlargement of the load carrying capacity due to bounded hardening.}, subject = {Finite-Elemente-Methode}, language = {en} } @article{Staat2001, author = {Staat, Manfred}, title = {LISA - a European project for FEM-based limit and shakedown analysis}, year = {2001}, abstract = {The load-carrying capacity or the safety against plastic limit states are the central questions in the design of structures and passive components in the apparatus engineering. A precise answer is most simply given by limit and shakedown analysis. These methods can be based on static and kinematic theorems for lower and upper bound analysis. Both may be formulated as optimization problems for finite element discretizations of structures. The problems of large-scale analysis and the extension towards realistic material modelling will be solved in a European research project. Limit and shakedown analyses are briefly demonstrated with illustrative examples.}, subject = {Einspielen }, language = {en} } @article{Staat2000, author = {Staat, Manfred}, title = {Direct FEM Limit and Shakedown Analysis with Uncertain Data}, year = {2000}, abstract = {The structural reliability with respect to plastic collapse or to inadaptation is formulated on the basis of the lower bound limit and shakedown theorems. A direct definition of the limit state function is achieved which permits the use of the highly effective first order reliability methods (FORM) is achieved. The theorems are implemented into a general purpose FEM program in a way capable of large-scale analysis. The limit state function and its gradient are obtained from a mathematical optimization problem. This direct approach reduces considerably the necessary knowledge of uncertain technological input data, the computing time, and the numerical error, leading to highly effective and precise reliability analyses.}, subject = {Finite-Elemente-Methode}, language = {en} } @article{Staat2012, author = {Staat, Manfred}, title = {Limit and shakedown analysis under uncertainty}, series = {Tap chi Khoa hoc \& ung dung - Dai hoc Ton Duc Thang}, volume = {19}, journal = {Tap chi Khoa hoc \& ung dung - Dai hoc Ton Duc Thang}, pages = {45 -- 47}, year = {2012}, language = {en} } @article{SponagelUngerSpies2003, author = {Sponagel, Stefan and Unger, J. and Spies, K. H.}, title = {H{\"a}rtebegriff im Zusammenhang mit Vernetzung, Bruchdehnung und Dauerfestigkeit eines Elastomers}, series = {Kautschuk Gummi Kunststoffe. 56 (2003), H. 11}, journal = {Kautschuk Gummi Kunststoffe. 56 (2003), H. 11}, isbn = {0948-3276}, pages = {608 -- 613}, year = {2003}, language = {de} } @article{SponagelUnger1998, author = {Sponagel, Stefan and Unger, J.}, title = {Organisation und Strukturierung technischer Messungen}, series = {Werkstattstechnik. 88 (1998), H. 5}, journal = {Werkstattstechnik. 88 (1998), H. 5}, isbn = {1436-5006}, pages = {223 -- 226}, year = {1998}, language = {de} } @article{SponagelSpaltofskiSteinhilper1988, author = {Sponagel, Stefan and Spaltofski, R. and Steinhilper, W.}, title = {Hochmolekulare Additive f{\"u}r die Gleitlagerschmierung. Spaltofski, R.; Sponagel, S.; Steinhilper, W.}, series = {Tribologie und Schmierungstechnik. 35 (1988), H. 5}, journal = {Tribologie und Schmierungstechnik. 35 (1988), H. 5}, isbn = {0036-6218}, pages = {236 -- 241}, year = {1988}, language = {de} } @article{SponagelSpaltofski1987, author = {Sponagel, Stefan and Spaltofski, R.}, title = {Hochmolekulare Zus{\"a}tze verbessern die Leichtlaufeigenschaft und die Tragf{\"a}higkeit von Schmierfilmen / Sponagel, S. ; Spaltofski, R.}, series = {Mineral{\"o}ltechnik. 32 (1987), H. 3}, journal = {Mineral{\"o}ltechnik. 32 (1987), H. 3}, isbn = {0341-1893}, pages = {28 S.}, year = {1987}, language = {de} } @article{SponagelMueller1983, author = {Sponagel, Stefan and M{\"u}ller, H.}, title = {Exakte instation{\"a}re L{\"o}sungen der Navier-Stokes-Gleichung. H. M{\"u}ller, S. Sponagel}, series = {Zeitschrift f{\"u}r angewandte Mathematik und Mechanik: ZAMM. 63 (1983)}, journal = {Zeitschrift f{\"u}r angewandte Mathematik und Mechanik: ZAMM. 63 (1983)}, isbn = {0044-2267}, pages = {T273 -- T275}, year = {1983}, language = {de} } @article{SponagelLutz1990, author = {Sponagel, Stefan and Lutz, Th.}, title = {Ein Beitrag zur Bestimmung der Haertewerte von Elastomeren}, series = {Kautschuk Gummi Kunststoffe. 43 (1990), H. 10}, journal = {Kautschuk Gummi Kunststoffe. 43 (1990), H. 10}, isbn = {0022-9520}, pages = {861 -- 865}, year = {1990}, language = {de} } @article{SponagelLutz1990, author = {Sponagel, Stefan and Lutz, T.}, title = {Aggregatelager}, series = {Kautschuk Gummi Kunststoffe. 43 (1990), H. 5}, journal = {Kautschuk Gummi Kunststoffe. 43 (1990), H. 5}, isbn = {0022-9520}, pages = {397 -- 406}, year = {1990}, language = {de} } @article{SponagelKilthauSpies1987, author = {Sponagel, Stefan and Kilthau, G. and Spies, K. H.}, title = {Sealing mechanism of lip seals}, series = {Eleventh 11th International Conference on Fluid Sealing : proceedings of the 11th Internat. Conference on Fluid Sealing, held at Cannes, France 8 - 10 April, 1987 / organised and sponsored by BHRA, the Fluid Engineering Centre. Ed. B. S. Nau}, journal = {Eleventh 11th International Conference on Fluid Sealing : proceedings of the 11th Internat. Conference on Fluid Sealing, held at Cannes, France 8 - 10 April, 1987 / organised and sponsored by BHRA, the Fluid Engineering Centre. Ed. B. S. Nau}, publisher = {Elsevier}, address = {London}, isbn = {3-540-51383-3}, pages = {748 -- 772}, year = {1987}, language = {en} } @article{SponagelGroling1983, author = {Sponagel, Stefan and Groling, G.}, title = {Eine Bemerkung zum Beweis des \&\#960; Theorems. G. Groling, S. Sponagel}, series = {Zeitschrift f{\"u}r angewandte Mathematik und Mechanik: ZAMM. 63 (1983)}, journal = {Zeitschrift f{\"u}r angewandte Mathematik und Mechanik: ZAMM. 63 (1983)}, isbn = {0044-2267}, pages = {T258 -- T259}, year = {1983}, language = {de} } @article{SponagelBecker1984, author = {Sponagel, Stefan and Becker, E.}, title = {Reibungsfreie, ebene Diffusorstr{\"o}mung mit beliebigem Einlaufprofil. E. Becker, S. Sponagel}, series = {Zeitschrift f{\"u}r angewandte Mathematik und Mechanik: ZAMM. 64 (1984)}, journal = {Zeitschrift f{\"u}r angewandte Mathematik und Mechanik: ZAMM. 64 (1984)}, isbn = {0044-2267}, pages = {T174 -- T177}, year = {1984}, language = {de} } @article{SponagelBaroudSteffenetal.2002, author = {Sponagel, Stefan and Baroud, G. and Steffen, T. and Wu, J.}, title = {Parameter identification for cement infiltration of osteoporotic bone}, series = {Poromechanics II : Proceedings of the Second Biot Conference on Poromechanics Grenoble, France 26 - 28 August 2002 / ed. by J.-L. Auriault ...}, journal = {Poromechanics II : Proceedings of the Second Biot Conference on Poromechanics Grenoble, France 26 - 28 August 2002 / ed. by J.-L. Auriault ...}, publisher = {Balkema}, address = {Lisse [u.a.]}, isbn = {90-5809-394-8}, pages = {55 -- 58}, year = {2002}, language = {en} } @article{SponagelBaroudFalketal.2004, author = {Sponagel, Stefan and Baroud, G. and Falk, R. and Crookshank, M.}, title = {Experimental and theoretical investigation of directional permeability of human vertebral cancellous bone for cement infiltration. G. Baroud, R. Falk, M. Crookshank, S. Sponagel, T. Steffen}, series = {Journal of Biomechanics. 37 (2004), H. 2}, journal = {Journal of Biomechanics. 37 (2004), H. 2}, isbn = {0021-9290}, pages = {189 -- 196}, year = {2004}, language = {en} } @article{SponagelBaroudFalketal.2004, author = {Sponagel, Stefan and Baroud, G. and Falk, R. and Crookshank, M.}, title = {Corrigendum to "Experimental and theoretical investigation of directional permeability of human vertebral cancellous bone for cement infiltration". Baroud, G.; Falk, R.; Crookshank, M.; Sponagel, S.; Steffen, T.}, series = {Journal of Biomechanics. 37 (2004), H. 2}, journal = {Journal of Biomechanics. 37 (2004), H. 2}, isbn = {0021-9290}, pages = {1802}, year = {2004}, language = {en} } @article{SponagelAkbayBeckeretal.1980, author = {Sponagel, Stefan and Akbay, U. and Becker, E. and Krozer, S.}, title = {Instability of slow viscometric flow}, series = {Mechanics Research Communications. 7 (1980), H. 4}, journal = {Mechanics Research Communications. 7 (1980), H. 4}, isbn = {0093-6413}, pages = {199 -- 204}, year = {1980}, language = {en} } @article{SponagelAkbayBecker1985, author = {Sponagel, Stefan and Akbay, U. and Becker, E.}, title = {Instability of plane Couette flow of viscoelastic liquids}, series = {Journal of non-Newtonian fluid mechanics. 18 (1985), H. 2}, journal = {Journal of non-Newtonian fluid mechanics. 18 (1985), H. 2}, isbn = {0377-0257}, pages = {123 -- 141}, year = {1985}, language = {en} } @article{SponagelAkbay1984, author = {Sponagel, Stefan and Akbay, U.}, title = {{\"U}ber den Mechanismus der Oberfl{\"a}cheninstabilit{\"a}t viskosimetrischer Str{\"o}mungen}, series = {Rheologica Acta. 23 (1984), H. 2}, journal = {Rheologica Acta. 23 (1984), H. 2}, isbn = {0035-4511}, pages = {185 -- 188}, year = {1984}, language = {de} } @article{SponagelAkbay1984, author = {Sponagel, Stefan and Akbay, U.}, title = {{\"U}ber den Relaxationseinfluß auf die Stabilit{\"a}t der ebenen Couette-Str{\"o}mung. Akbay, U. ; Sponagel, S.}, series = {Rheologica Acta. 23 (1984), H. 2}, journal = {Rheologica Acta. 23 (1984), H. 2}, isbn = {0035-4511}, pages = {177 -- 184}, year = {1984}, language = {de} } @article{SponagelAkbay1981, author = {Sponagel, Stefan and Akbay, S.}, title = {{\"U}ber die Stabilit{\"a}t viskometrischer Str{\"o}mungen}, series = {Rheologica acta. 20 (1981), H. 6}, journal = {Rheologica acta. 20 (1981), H. 6}, isbn = {0035-4511}, pages = {579 -- 590}, year = {1981}, language = {de} } @article{SponagelAdbayBeckeretal.1980, author = {Sponagel, Stefan and Adbay, U. and Becker, E. and Krozer, S.}, title = {A possible cause of viscoelastic turbulence}, series = {Rheology : proceedings of the 8th International Congress of Rheology, held in Naples, Italy, September 1 - 5, 1980 / Hrsg. von Giovanni Astarita, Vol. 2}, journal = {Rheology : proceedings of the 8th International Congress of Rheology, held in Naples, Italy, September 1 - 5, 1980 / Hrsg. von Giovanni Astarita, Vol. 2}, publisher = {Plenum Pr.}, address = {New York}, isbn = {0-306-40465-6}, pages = {79 -- 84}, year = {1980}, language = {en} } @article{Sponagel1987, author = {Sponagel, Stefan}, title = {Analytische Berechnung von Gummi- Metall- Verbindungen}, series = {Konstruktion : Zeitschrift f{\"u}r Produktentwicklung. 39 (1987), H. 4}, journal = {Konstruktion : Zeitschrift f{\"u}r Produktentwicklung. 39 (1987), H. 4}, isbn = {0373-3300}, pages = {151 -- 158}, year = {1987}, language = {de} } @article{Sponagel1999, author = {Sponagel, Stefan}, title = {Der Mensch als L{\"a}ufer}, series = {Orthop{\"a}die und Sport : [Bericht zum Stolberger Orthop{\"a}dietag, 13. Juni 1998]}, journal = {Orthop{\"a}die und Sport : [Bericht zum Stolberger Orthop{\"a}dietag, 13. Juni 1998]}, publisher = {Meyer \& Meyer}, address = {Aachen}, isbn = {978-3-89124-540-8}, pages = {15 -- 21}, year = {1999}, language = {de} } @article{SpelthahnSchubertSchoening2012, author = {Spelthahn, Heiko and Schubert, J{\"u}rgen and Sch{\"o}ning, Michael Josef}, title = {D{\"u}nnschichtsensoren f{\"u}r die Schwermetallanalytik}, series = {GIT : Labor-Fachzeitschrift}, volume = {56}, journal = {GIT : Labor-Fachzeitschrift}, number = {4}, publisher = {Wiley-VCH}, address = {Weinheim}, issn = {0016-3538}, pages = {285 -- 287}, year = {2012}, abstract = {Die Detektion von Schadstoffen repr{\"a}sentiert in der Umweltanalytik eine wichtige Aufgabenstellung. Gerade die Abwasser- bzw. Brauchwasseranalytik sowie die Prozesskontrolle haben einen hohen Stellenwert. Siliziumbasierte D{\"u}nnschichtsensoren bieten eine kosteng{\"u}nstige M{\"o}glichkeit, „online"-Messungen bzw. Vor-Ort-Messungen zeitnah durchzuf{\"u}hren. In dieser Arbeit wird ein potentiometrisches Sensorarray auf der Basis von Chalkogenidgl{\"a}sern zur Detektion von Schwermetallen in w{\"a}ssrigen Medien vorgestellt.}, language = {en} } @article{SpelthahnSchubertSchoening2012, author = {Spelthahn, Heiko and Schubert, J{\"u}rgen and Sch{\"o}ning, Michael Josef}, title = {D{\"u}nnschichtsensoren f{\"u}r die Schwermetallanalytik : Mikroelektroden auf Chalkogenidglasbasis}, series = {GIT Labor-Fachzeitschrift}, journal = {GIT Labor-Fachzeitschrift}, number = {4}, publisher = {Wiley-VCH}, address = {Weinheim}, pages = {285 -- 287}, year = {2012}, abstract = {Die Detektion von Schadstoffen repr{\"a}sentiert in der Umweltanalytik eine wichtige Aufgabenstellung. Gerade die Abwasser- bzw. Brauchwasseranalytik sowie die Prozesskontrolle haben einen hohen Stellenwert. Siliziumbasierte D{\"u}nnschichtsensoren bieten eine kosteng{\"u}nstige M{\"o}glichkeit, „online"-Messungen bzw. Vor-Ort-Messungen zeitnah durchzuf{\"u}hren. In dieser Arbeit wird ein potentiometrisches Sensorarray auf der Basis von Chalkogenidgl{\"a}sern zur Detektion von Schwermetallen in w{\"a}ssrigen Medien vorgestellt.}, language = {de} } @article{SpelthahnSchaffrathCoppeetal.2010, author = {Spelthahn, Heiko and Schaffrath, Sophie and Coppe, Thomas and Rufi, Frederic and Sch{\"o}ning, Michael Josef}, title = {Development of an electrolyte-insulator-semiconductor (EIS) based capacitive heavy metal sensor for the detection of Pb2+ und Cd2+ ions}, series = {Physica status solidi (a) : applications and material science. 207 (2010), H. 4}, journal = {Physica status solidi (a) : applications and material science. 207 (2010), H. 4}, isbn = {1862-6300}, pages = {930 -- 934}, year = {2010}, language = {en} } @article{SpelthahnPoghossianSchoening2009, author = {Spelthahn, Heiko and Poghossian, Arshak and Sch{\"o}ning, Michael Josef}, title = {Self-aligned nanogaps and nanochannels via conventional photolithography and pattern-size reduction technique}, series = {Electrochimica Acta. 54 (2009), H. 25 Sp. Iss. SI}, journal = {Electrochimica Acta. 54 (2009), H. 25 Sp. Iss. SI}, isbn = {0013-4686}, pages = {6010 -- 6014}, year = {2009}, language = {en} } @article{SpelthahnKirsanovLeginetal.2012, author = {Spelthahn, Heiko and Kirsanov, Dmitry and Legin, Andrey and Osterrath, Thomas and Schubert, J{\"u}rgen and Zander, Willi and Sch{\"o}ning, Michael Josef}, title = {Development of a thin-film sensor array for analytical monitoring of heavy metals in aqueous solutions}, series = {Physica Status Solidi (a)}, volume = {209}, journal = {Physica Status Solidi (a)}, number = {5}, publisher = {Wiley-VCH}, address = {Weinheim}, isbn = {1862-6319}, doi = {10.1002/pssa.201100733}, pages = {885 -- 891}, year = {2012}, abstract = {In industrial processes there is a variety of heavy metals (e.g., copper, zinc, cadmium, and lead) in use for wires, coatings, paints, alloys, batteries, etc. Since the application of these transition metals for industry is inevitable, it is a vital task to develop proper analytical techniques for their monitoring at low activity levels, especially because most of these elements are acutely toxic for biological organisms. The determination of ions in solution by means of a simple and inexpensive sensor array is, therefore, a promising task. In this work, a sensor array with heavy metal-sensitive chalcogenide glass membranes for the simultaneous detection of the four ions Ag⁺, Cu2⁺, Cd2⁺, and Pb2⁺ in solution is realized. The results of the physical characterization by means of microscopy, profilometry, Rutherford backscattering spectroscopy (RBS), and scanning electron microscopy (SEM) as well as the electrochemical characterization by means of potentiometric measurements are presented. Additionally, the possibility to expand the sensor array by polymeric sensor membranes is discussed.}, language = {en} } @article{SousaSiqueiraVerciketal.2017, author = {Sousa, Marcos A. M. and Siqueira, Jose R. Jr. and Vercik, Andres and Sch{\"o}ning, Michael Josef and Oliveira, Osvaldo N. Jr.}, title = {Determining the optimized layer-by-layer film architecture with dendrimer/carbon nanotubes for field-effect sensors}, series = {IEEE Sensors Journal}, volume = {17}, journal = {IEEE Sensors Journal}, number = {6}, publisher = {IEEE}, address = {New York}, issn = {1558-1748}, doi = {10.1109/JSEN.2017.2653238}, pages = {1735 -- 1740}, year = {2017}, abstract = {The capacitive electrolyte-insulator-semiconductor (EIS) structure is a typical device based on a field-effect sensor platform. With a simple silicon-based structure, EIS have been useful for several sensing applications, especially with incorporation of nanostructured films to modulate the ionic transport and the flat-band potential. In this paper, we report on ion transport and changes in flat-band potential in EIS sensors made with layer-by-layer films containing poly(amidoamine) (PAMAM) dendrimer and single-walled carbon nanotubes (SWNTs) adsorbed on p-Si/SiO 2 /Ta 2 O 5 chips with an Al ohmic contact. The impedance spectra were fitted using an equivalent circuit model, from which we could determine parameters such as the double-layer capacitance. This capacitance decreased with the number of bilayers owing to space charge accumulated at the electrolyte-insulator interface, up to three PAMAM/SWNTs bilayers, after which it stabilized. The charge-transfer resistance was also minimum for three bilayers, thus indicating that this is the ideal architecture for an optimized EIS performance. The understanding of the influence of nanostructures and the fine control of operation parameters pave the way for optimizing the design and performance of new EIS sensors.}, language = {en} } @article{SlabuRoethEngelmannetal.2019, author = {Slabu, Ioana and Roeth, Anjali A. and Engelmann, Ulrich M. and Wiekhorst, Frank and Buhl, Eva M. and Neumann, Ulf P. and Schmitz-Rode, Thomas}, title = {Modeling of magnetoliposome uptake in human pancreatic tumor cells in vitro}, series = {Nanotechnology}, volume = {30}, journal = {Nanotechnology}, number = {18}, issn = {1361-6528}, doi = {10.1088/1361-6528/ab033e}, pages = {184004}, year = {2019}, language = {en} } @article{SiqueiraBaeckerPoghossianetal.2010, author = {Siqueira, Jos{\´e} R. Jr. and B{\"a}cker, Matthias and Poghossian, Arshak and Zucolotto, Valtencir and Oliveira, Osvaldo N. Jr. and Sch{\"o}ning, Michael Josef}, title = {Associating biosensing properties with the morphological structure of multilayers containing carbon nanotubes on field-effect devices}, series = {Physica status solidi (a). 207 (2010), H. 4}, journal = {Physica status solidi (a). 207 (2010), H. 4}, isbn = {1862-6300}, pages = {781 -- 786}, year = {2010}, language = {en} } @article{SiqueiraAbouzarPoghossianetal.2009, author = {Siqueira, Jos{\´e} R. Jr. and Abouzar, Maryam H. and Poghossian, Arshak and Zucolotto, Valtencir and Oliveira, Osvaldo N. Jr. and Sch{\"o}ning, Michael Josef}, title = {Penicillin biosensor based on a capacitive field-effect structure functionalized with a dendrimer/carbon nanotube multilayer}, series = {Biosensors and Bioelectronics. 25 (2009), H. 2}, journal = {Biosensors and Bioelectronics. 25 (2009), H. 2}, isbn = {0956-5663}, pages = {497 -- 501}, year = {2009}, language = {en} } @article{SiqueiraAbouzarBaeckeretal.2009, author = {Siqueira, Jos{\´e} R. Jr. and Abouzar, Maryam H. and B{\"a}cker, Matthias and Zucolotto, Valtencir and Poghossian, Arshak and Oliveira, Osvaldo N. Jr. and Sch{\"o}ning, Michael Josef}, title = {Carbon nanotubes in nanostructured films: Potential application as amperometric and potentiometric field-effect (bio-)chemical sensors}, series = {physica status solidi (a) . 206 (2009), H. 3}, journal = {physica status solidi (a) . 206 (2009), H. 3}, publisher = {Wiley}, address = {Weinheim}, isbn = {1862-6319}, pages = {462 -- 467}, year = {2009}, language = {en} } @article{SiqueiraWernerBaeckeretal.2009, author = {Siqueira, Jose R. and Werner, Frederik and B{\"a}cker, Matthias and Poghossian, Arshak and Zucolotto, Valtencir and Oliveira, Osvaldo N. Jr. and Sch{\"o}ning, Michael Josef}, title = {Layer-by-Layer Assembly of Carbon Nanotubes Incorporated in Light-Addressable Potentiometric Sensors}, series = {Journal of Physical Chemistry C. 113 (2009), H. 33}, journal = {Journal of Physical Chemistry C. 113 (2009), H. 33}, publisher = {American Chemical Society}, address = {Washington, DC}, isbn = {1932-7455}, pages = {14765 -- 14770}, year = {2009}, language = {en} } @article{SiqueiraMolinnusBegingetal.2014, author = {Siqueira, Jose R. and Molinnus, Denise and Beging, Stefan and Sch{\"o}ning, Michael Josef}, title = {Incorporating a hybrid urease-carbon nanotubes sensitive nanofilm on capacitive field-effect sensors for urea detection}, series = {Analytical chemistry}, volume = {86}, journal = {Analytical chemistry}, number = {11}, publisher = {ACS Publications}, address = {Columbus}, issn = {1520-6882 (E-Journal); 0003-2700 (Print); 0096-4484 (Print)}, doi = {10.1021/ac500458s}, pages = {5370 -- 5375}, year = {2014}, abstract = {The ideal combination among biomolecules and nanomaterials is the key for reaching biosensing units with high sensitivity. The challenge, however, is to find out a stable and sensitive film architecture that can be incorporated on the sensor's surface. In this paper, we report on the benefits of incorporating a layer-by-layer (LbL) nanofilm of polyamidoamine (PAMAM) dendrimer and carbon nanotubes (CNTs) on capacitive electrolyte-insulator-semiconductor (EIS) field-effect sensors for detecting urea. Three sensor arrangements were studied in order to investigate the adequate film architecture, involving the LbL film with the enzyme urease: (i) urease immobilized directly onto a bare EIS [EIS-urease] sensor; (ii) urease atop the LbL film over the EIS [EIS-(PAMAM/CNT)-urease] sensor; and (iii) urease sandwiched between the LbL film and another CNT layer [EIS-(PAMAM/CNT)-urease-CNT]. The surface morphology of all three urea-based EIS biosensors was investigated by atomic force microscopy (AFM), while the biosensing abilities were studied by means of capacitance-voltage (C/V) and dynamic constant-capacitance (ConCap) measureaments at urea concentrations ranging from 0.1 mM to 100 mM. The EIS-urease and EIS-(PAMAM/CNT)-urease sensors showed similar sensitivity (∼18 mV/decade) and a nonregular signal behavior as the urea concentration increased. On the other hand, the EIS-(PAMAM/CNT)-urease-CNT sensor exhibited a superior output signal performance and higher sensitivity of about 33 mV/decade. The presence of the additional CNT layer was decisive to achieve a urea based EIS sensor with enhanced properties. Such sensitive architecture demonstrates that the incorporation of an adequate hybrid enzyme-nanofilm as sensing unit opens new prospects for biosensing applications using the field-effect sensor platform.}, language = {en} } @article{SiqueiraMakiPaulovichetal.2010, author = {Siqueira, Jose R. and Maki, Rafael M. and Paulovich, Fernando V. and Werner, Frederik and Poghossian, Arshak and Oliveira, Maria C. F. de and Zucolotto, Valtencir and Oliveira, Osvaldo N. Jr. and Sch{\"o}ning, Michael Josef}, title = {Use of Information Visualization Methods Eliminating Cross Talk in Multiple Sensing Units Investigated for a Light-Addressable Potentiometric Sensor}, series = {Analytical Chemistry (2010)}, journal = {Analytical Chemistry (2010)}, isbn = {0003-2700}, pages = {61 -- 65}, year = {2010}, language = {en} } @article{SimonisRugeMuellerVeggianetal.2003, author = {Simonis, A. and Ruge, C. and M{\"u}ller-Veggian, Mattea and L{\"u}th, H. and Sch{\"o}ning, Michael Josef}, title = {A long-term stable macroporoustype EIS structure for electrochemical sensor applications}, series = {Sensors and Actuators B. 91 (2003), H. 1-3}, journal = {Sensors and Actuators B. 91 (2003), H. 1-3}, isbn = {0925-4005}, pages = {21 -- 25}, year = {2003}, language = {en} } @article{SimonisLuethWangetal.2004, author = {Simonis, A. and L{\"u}th, H. and Wang, J. and Sch{\"o}ning, Michael Josef}, title = {Miniaturisierte Referenzelektroden in Siliziumtechnologie f{\"u}r elektrochemische Sensoranwendungen}, series = {Sensoren und Messsysteme 2004 : Tagung Ludwigsburg, 15. und 16. M{\"a}rz 2004 / VDI-VDE-Gesellschaft Mess- und Automatisierungstechnik}, journal = {Sensoren und Messsysteme 2004 : Tagung Ludwigsburg, 15. und 16. M{\"a}rz 2004 / VDI-VDE-Gesellschaft Mess- und Automatisierungstechnik}, publisher = {VDI}, address = {D{\"u}sseldorf}, isbn = {3-18-091829-2}, pages = {847 -- 850}, year = {2004}, language = {de} } @article{SimonisLuethWangetal.2004, author = {Simonis, A. and L{\"u}th, H. and Wang, J. and Sch{\"o}ning, Michael Josef}, title = {New concepts of miniaturised reference electrodes in silicon technology for potentiometric sensor systems}, series = {Sensors and Actuators B. 103 (2004), H. 1-2}, journal = {Sensors and Actuators B. 103 (2004), H. 1-2}, isbn = {0925-4005}, pages = {429 -- 435}, year = {2004}, language = {en} } @article{SimonisLuethWangetal.2003, author = {Simonis, A. and L{\"u}th, H. and Wang, J. and Sch{\"o}ning, Michael Josef}, title = {Strategies of miniaturised reference electrodes integrated in a silicon-based „one chip" pH sensor}, series = {Sensors. 3 (2003), H. 9}, journal = {Sensors. 3 (2003), H. 9}, isbn = {1424-8220}, pages = {330 -- 339}, year = {2003}, language = {en} } @article{SimonisKringsLuethetal.2001, author = {Simonis, A. and Krings, T. and L{\"u}th, H. and Wang, J. and Sch{\"o}ning, Michael Josef}, title = {A „hybrid" thin-film pH sensor with integrated thick-film reference}, series = {Sensors. 1 (2001), H. 6}, journal = {Sensors. 1 (2001), H. 6}, isbn = {1424-8220}, pages = {183 -- 192}, year = {2001}, language = {en} } @article{SimonisDawgulLuethetal.2005, author = {Simonis, A. and Dawgul, M. and L{\"u}th, H. and Sch{\"o}ning, Michael Josef}, title = {Miniaturised reference electrodes for field-effect sensors compatible to silicon chip technology}, series = {Electrochimica Acta. 51 (2005), H. 5}, journal = {Electrochimica Acta. 51 (2005), H. 5}, isbn = {0013-4686}, doi = {10.1016/j.electacta.2005.04.063}, pages = {930 -- 937}, year = {2005}, language = {en} } @article{SildatkeKarwanniKraftetal.2023, author = {Sildatke, Michael and Karwanni, Hendrik and Kraft, Bodo and Z{\"u}ndorf, Albert}, title = {A distributed microservice architecture pattern for the automated generation of information extraction pipelines}, series = {SN Computer Science}, journal = {SN Computer Science}, number = {4, Article number: 833}, publisher = {Springer Singapore}, address = {Singapore}, issn = {2661-8907}, doi = {10.1007/s42979-023-02256-4}, pages = {19 Seiten}, year = {2023}, abstract = {Companies often build their businesses based on product information and therefore try to automate the process of information extraction (IE). Since the information source is usually heterogeneous and non-standardized, classic extract, transform, load techniques reach their limits. Hence, companies must implement the newest findings from research to tackle the challenges of process automation. They require a flexible and robust system that is extendable and ensures the optimal processing of the different document types. This paper provides a distributed microservice architecture pattern that enables the automated generation of IE pipelines. Since their optimal design is individual for each input document, the system ensures the ad-hoc generation of pipelines depending on specific document characteristics at runtime. Furthermore, it introduces the automated quality determination of each available pipeline and controls the integration of new microservices based on their impact on the business value. The introduced system enables fast prototyping of the newest approaches from research and supports companies in automating their IE processes. Based on the automated quality determination, it ensures that the generated pipelines always meet defined business requirements when they come into productive use.}, language = {en} } @article{SeynnesBojsenMollerAlbrachtetal.2015, author = {Seynnes, O. R. and Bojsen-Moller, J. and Albracht, Kirsten and Arndt, A. and Cronin, N. J. and Finni, T. and Magnusson, S. P.}, title = {Ultrasound-based testing of tendon mechanical properties: a critical evaluation}, series = {Journal of Applied Physiology}, volume = {118}, journal = {Journal of Applied Physiology}, number = {2}, issn = {8750-7587}, doi = {10.1152/japplphysiol.00849.2014}, pages = {133 -- 141}, year = {2015}, language = {en} } @article{SeifarthSchehlLinderetal.2011, author = {Seifarth, Volker and Schehl, D. and Linder, Peter and Gossmann, Matthias and Digel, Ilya and Artmann, Gerhard and Porst, Dariusz and Preiß, C. and Kayser, Peter and Pack, O. and Temiz Artmann, Ayseg{\"u}l}, title = {Ureplace: development of a bioreactor for in vitro culturing of cell seeded tubular vessels on collagen scaffolds}, year = {2011}, abstract = {The demand of replacements for inoperable organs exceeds the amount of available organ transplants. Therefore, tissue engineering developed as a multidisciplinary field of research for autologous in-vitro organs. Such three dimensional tissue constructs request the application of a bioreactor. The UREPLACE bioreactor is used to grow cells on tubular collagen scaffolds OPTIMAIX Sponge 1 with a maximal length of 7 cm, in order to culture in vitro an adequate ureter replacement. With a rotating unit, (urothelial) cells can be placed homogeneously on the inner scaffold surface. Furthermore, a stimulation is combined with this bioreactor resulting in an orientation of muscle cells. These culturing methods request a precise control of several parameters and actuators. A combination of a LabBox and the suitable software LabVision is used to set and conduct parameters like rotation angles, velocities, pressures and other important cell culture values. The bioreactor was tested waterproof successfully. Furthermore, the temperature controlling was adjusted to 37 °C and the CO2 - concentration regulated to 5 \%. Additionally, the pH step responses of several substances showed a perfect functioning of the designed flow chamber. All used software was tested and remained stable for several days.}, subject = {Tissue Engineering}, language = {en} } @article{SeidovaKotliarFoergeretal.2009, author = {Seidova, Seid-Fatima and Kotliar, Konstantin and Foerger, Frauke and Klopfer, Matthias and Lanzl, Ines}, title = {Functional retinal changes in Gaucher disease}, series = {Documenta Ophthalmologica}, volume = {118}, journal = {Documenta Ophthalmologica}, number = {2}, publisher = {Springer}, address = {Berlin}, isbn = {1573-2622}, pages = {151 -- 154}, year = {2009}, language = {en} } @article{SchuetzWeissbeckerSchrothetal.2001, author = {Sch{\"u}tz, S. and Weißbecker, G. and Schroth, P. and Sch{\"o}ning, Michael Josef}, title = {Linkage of inanimate structures to biological systems - smart materials in biological micro- nanosystems}, series = {Smart materials : proceedings of the 1st Caesarium, Bonn, November 17 - 19, 1999 / Karl-Heinz Hoffmann ed.}, journal = {Smart materials : proceedings of the 1st Caesarium, Bonn, November 17 - 19, 1999 / Karl-Heinz Hoffmann ed.}, publisher = {Springer}, address = {Berlin [u.a.]}, isbn = {3-540-67957-X}, pages = {149 -- 157}, year = {2001}, language = {en} } @article{SchuetzWeissbeckerHummeletal.1997, author = {Sch{\"u}tz, S. and Weißbecker, B. and Hummel, Hans E. and Sch{\"o}ning, Michael Josef and Riemer, A. and Kordos, P. and L{\"u}th, H.}, title = {Field effect transistor-insect antenna junction}, series = {Naturwissenschaften}, volume = {84}, journal = {Naturwissenschaften}, issn = {1432-1904}, pages = {86 -- 88}, year = {1997}, language = {en} } @article{SchuetzSchoeningSchrothetal.2000, author = {Sch{\"u}tz, S. and Sch{\"o}ning, Michael Josef and Schroth, P. and Weißbecker, B. and Kordos, P. and L{\"u}th, H. and Hummel, Hans E.}, title = {An insectbased BioFET as a bioelectronic nose}, series = {Sensors and Actuators B. 65 (2000), H. 1-3}, journal = {Sensors and Actuators B. 65 (2000), H. 1-3}, isbn = {0925-4005}, pages = {291 -- 295}, year = {2000}, language = {en} } @article{SchuetzSchoeningSchrothetal.1998, author = {Sch{\"u}tz, S. and Sch{\"o}ning, Michael Josef and Schroth, P. and Weißbecker, B. and Kordos, P. and L{\"u}th, H. and Hummel, Hans E.}, title = {An insectbased BioFET as a bioelectronic nose}, series = {Proceedings of the Seventh International Meeting on Chemical Sensors : 27 - 30 July, 1998, Beijing, P. R. China / ed. Zhi-Gang Zhou}, journal = {Proceedings of the Seventh International Meeting on Chemical Sensors : 27 - 30 July, 1998, Beijing, P. R. China / ed. Zhi-Gang Zhou}, publisher = {Elsevier}, address = {Amsterdam [u.a.]}, pages = {314 -- 316}, year = {1998}, language = {en} } @article{SchuetzHummelSchoeningetal.1999, author = {Sch{\"u}tz, S. and Hummel, Hans E. and Sch{\"o}ning, Michael Josef and Schroth, P. and Kordos, P. and L{\"u}th, H. and Zimmermann, S. and Schwarz, A. and Kohl, C.-D. and Koczan, D.}, title = {Applications and perspectives of biosensors based on insect olfaction}, series = {Sensor 99 : proceedings / 9th International Fair and Conference for Sensors, Transducers \& Systems, May 18 - 20, 1999, Exhibition Centre N{\"u}rnberg/Germany}, journal = {Sensor 99 : proceedings / 9th International Fair and Conference for Sensors, Transducers \& Systems, May 18 - 20, 1999, Exhibition Centre N{\"u}rnberg/Germany}, publisher = {AMA Service}, address = {Wunstorf}, pages = {99 -- 104}, year = {1999}, language = {en} } @article{SchuetzCzynskiHummeletal.2000, author = {Sch{\"u}tz, S. and Czynski, J. and Hummel, Hans E. and Sch{\"o}ning, Michael Josef and Schroth, P. and Kordos, P. and L{\"u}th, H.}, title = {Insect meets microelectronics: A BioFET as a first step to bioelectronic microsystems}, series = {Transducers '99 : proceedings of the Tenth International Conference on Solid-State Sensors and Actuators ; 7 - 10 June, 1999, Sendai, Japan / ed.: S. Middelhoek}, journal = {Transducers '99 : proceedings of the Tenth International Conference on Solid-State Sensors and Actuators ; 7 - 10 June, 1999, Sendai, Japan / ed.: S. Middelhoek}, publisher = {Elsevier}, address = {Amsterdam [u.a.]}, pages = {1104 -- 1107}, year = {2000}, language = {en} } @article{SchoeningYoshinobuSchubertetal.2002, author = {Sch{\"o}ning, Michael Josef and Yoshinobu, T. and Schubert, J. and Steffen, A. and L{\"u}th, H.}, title = {Innovative Schichttechniken und Messprinzipien f{\"u}r kapazitive Feldeffektsensoren}, series = {Sensoren und Mess-Systeme : Vortr{\"a}ge der 11. ITG/GMA-Fachtagung vom 11. bis 12. M{\"a}rz 2002 in Ludwigsburg / Veranst.: Informationstechnische Gesellschaft im VDE (ITG) ... Wiss. Tagungsleitung: C. D. Kohl ....}, journal = {Sensoren und Mess-Systeme : Vortr{\"a}ge der 11. ITG/GMA-Fachtagung vom 11. bis 12. M{\"a}rz 2002 in Ludwigsburg / Veranst.: Informationstechnische Gesellschaft im VDE (ITG) ... Wiss. Tagungsleitung: C. D. Kohl ....}, publisher = {VDE-Verl.}, address = {Berlin [u.a.]}, isbn = {3-8007-2675-0}, pages = {151 -- 154}, year = {2002}, language = {de} } @article{SchoeningWeidenbrueckThustetal.1997, author = {Sch{\"o}ning, Michael Josef and Weidenbr{\"u}ck, B. and Thust, M. and Kordos, P. and L{\"u}th, H.}, title = {A silicon-based sensor array with capacitive EIS structures}, series = {Proceedings of the 11th European Conference on Solid-State Transducers / Eurosensors XI, September 21 - 24, 1997, Warsaw, Poland. [Organised by] Warsaw University of Technology. Vol 2.}, journal = {Proceedings of the 11th European Conference on Solid-State Transducers / Eurosensors XI, September 21 - 24, 1997, Warsaw, Poland. [Organised by] Warsaw University of Technology. Vol 2.}, publisher = {Sensor Lab Sp.}, address = {Warsaw}, isbn = {83-908335-0-6}, pages = {871 -- 874}, year = {1997}, language = {en} } @article{SchoeningWangKrauseetal.2002, author = {Sch{\"o}ning, Michael Josef and Wang, Josepf and Krause, Robin and Block, Kirstin and Musameh, Mustafa and Mulchandani, Ashok and Mulchandani, Priti and Chen, Wilfred}, title = {Dual amperometric-potentiometric biosensor detection system for monitoring organophosphorus neurotoxins}, series = {Analyica Chimica Acta. 469 (2002), H. 2}, journal = {Analyica Chimica Acta. 469 (2002), H. 2}, isbn = {0378-4304}, pages = {197 -- 203}, year = {2002}, language = {en} }