TY  - JOUR
A1  - Reisgen, Uwe
A1  - Schleser, Markus
A1  - Mokrov, Oleg
A1  - Ahmed, Essam
T1  - Uni- and bi-axial deformation behavior of laser welded advanced high strength steel sheets
JF  - Journal of materials processing technology
N2  - Bead-on-plate butt joints of 2.5 mm hot rolled DP600/DP600 and 1.2 mm cold rolled TRIP700/TRIP700 steel sheets were performed using 6 kW CO2 laser beam welding. The welding speed ranged from 1.5 to 3.0 and from 2.1 to 3.9 m/min in DP/DP and TRIP/TRIP steel weldments respectively. A top surface helium gas was used as a shielding gas at a flow rate of 20 l/min. Metallographic examinations and transverse tensile testing (DIN EN 895: 1995) were carried out to characterize the weldments. The formability of base metals and weldments were investigated by standard Erichsen test (DIN EN ISO 20482). It was found that the uniaxial plastic behavior of both DP600 and TRIP700 base metals was in agreement with Swift and modified Mecking–Kocks models respectively. In a perpendicular tensile test to the weld line, all specimens were fractured at the base metal however the strengths were somewhat higher than those of base metal. There was a significant reduction in formability caused by welding of both DP/DP and TRIP/TRIP steel weldments and the formability has been improved with the increase of the welding speed.
Y1  - 2010
U6  - http://dx.doi.org/http10.1016/j.jmatprotec.2010.08.003
SN  - 0924-0136
VL  - 210
IS  - 15
SP  - 2188
EP  - 2196
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Olk, Ulrich
T1  - Unfallverhütung
JF  - Zahlentafeln für den Baubetrieb / Hoffmann, Manfred ; Kuhlmann, Willy [Hrsg.]. 7., vollst. überarb. Aufl.
Y1  - 2006
SN  - 3-519-65220-X
N1  - Kapitel 14
SP  - 833
EP  - 929
PB  - Teubner
CY  - Wiesbaden
ER  - 
TY  - JOUR
A1  - Schwarzer, Klemens
A1  - Ehrhardt, J.
A1  - Bayer, A.
A1  - Kroeger, W.
T1  - Unfallfolgen- und Risikoabschätzung für die probabilistische HTR-1160-Sicherheitsstudie / J. Ehrhardt ; A. Bayer ; W. Kroeger ; K. Schwarzer
JF  - Atomwirtschaft - Atomtechnik. 27 (1982), H. 10
Y1  - 1982
SN  - 0004-721x
N1  - 2. ISSN: 0365-8414
SP  - 527
EP  - 529
ER  - 
TY  - JOUR
A1  - Fredebeul-Krein, Markus
A1  - Vogel, Erika
T1  - Underground Storage Facilities in the German natural gas market: A need for access regulation to ensure competition?
JF  - Zeitschrift für Energiewirtschaft. 30 (2006), H. 4
Y1  - 2006
SN  - 0343-5377
SP  - 257
EP  - 270
ER  - 
TY  - JOUR
A1  - Wittmann, Klaus
A1  - Gillessen, F.
A1  - Otto, G.
A1  - Röstel, R.
T1  - Undercooling and solidification of metallic melts suspended in a non-nucleating matrix: Experiment NUCAL of the German Spacelab Mission D-2
JF  - Acta Astronautica. 38 (1996), H. 1
Y1  - 1996
SN  - 0094-5765
SP  - 63
EP  - 68
ER  - 
TY  - JOUR
A1  - Fellin, Wolfgang
A1  - King, Julian
A1  - Kirsch, Ansgar
A1  - Oberguggenberger, Michael
T1  - Uncertainty modelling and sensitivity analysis of tunnel face stability
JF  - Structural safety
N2  - This paper proposes an approach to the choice and evaluation of engineering models with the aid of a typical application in geotechnics. An important issue in the construction of shallow tunnels, especially in weak ground conditions, is the tunnel face stability. Various theoretical and numerical models for predicting the necessary support pressure have been put forth in the literature. In this paper, we combine laboratory experiments performed at the University of Innsbruck with current methods of uncertainty and sensitivity analysis for assessing adequacy, predictive power and robustness of the models. The major issues are the handling of the twofold uncertainty of test results and of model predictions as well as the decision about what are the influential input parameters.
Y1  - 2010
U6  - http://dx.doi.org/10.1016/j.strusafe.2010.06.001
SN  - 0167-4730
VL  - 32
IS  - 6
SP  - 402
EP  - 410
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Timme, Michael
A1  - Hülk, Fabian
T1  - Unbefristete Widerspruchsmöglichkeit des Schuldners im Einzugsermächtigungslastschriftverfahren
JF  - Neue Juristische Wochenschrift (2002)
Y1  - 2002
SP  - 1243
EP  - 1244
ER  - 
TY  - JOUR
A1  - Schuba, Marko
A1  - Busboom, Axel
A1  - Herwono, Ian
A1  - Zavagli, Guido
T1  - Unambiguous Device Identification and Fast Connection Setup in Bluetooth / Busboom, Axel ; Herwono, Ian ; Schuba, Marko ; Zavagli, Guido
JF  - European wireless 2002 : next generation wireless networks: technologies, protocols, services and applications ; technical sessions: 26 - 28 February 2002, tutorials: 25 February 2002, Centro Affari, Florence, Italy ; proceedings / sponsored by EUREL ... General chair: Luciano Lenzini
Y1  - 2002
SP  - 1
EP  - 5
ER  - 
TY  - JOUR
A1  - Paschmann, Hans
A1  - Kuhlmann, Karl
T1  - Umweltverträglicher Baustoff Beton von den Ausgangsstoffen bis zur Wiederverwertung / Kuhlmann, Karl; Paschmann, Hans
JF  - BFT Betonwerk + Fertigteil-Technik. 62 (1996), H. 1
Y1  - 1996
SN  - 0373-4331
SP  - 112
EP  - 121
ER  - 
TY  - JOUR
A1  - Lassonczyk, Beate
A1  - Grupe, M.
T1  - Umweltaudit aus der Sicht des Bodenschutzes
JF  - Umweltschutz-Management und Öko-Auditing / Manfred Sietz ... (Hrsg.)
Y1  - 1993
SN  - 3-540-56911-1
SP  - 133
EP  - 141
PB  - Springer
CY  - Berlin
ER  -