Refine
Year of publication
- 2018 (74) (remove)
Institute
- Fachbereich Elektrotechnik und Informationstechnik (21)
- Fachbereich Energietechnik (13)
- Fachbereich Luft- und Raumfahrttechnik (12)
- Fachbereich Maschinenbau und Mechatronik (9)
- IfB - Institut für Bioengineering (9)
- Fachbereich Bauingenieurwesen (7)
- Fachbereich Medizintechnik und Technomathematik (6)
- Solar-Institut Jülich (4)
- ECSM European Center for Sustainable Mobility (2)
- MASKOR Institut für Mobile Autonome Systeme und Kognitive Robotik (2)
Has Fulltext
- no (74) (remove)
Document Type
- Conference Proceeding (74) (remove)
Keywords
- Serious Game (2)
- Agility (1)
- Antarctica (1)
- Awareness (1)
- CDG (1)
- Competence Developing Game (1)
- Energy efficiency (1)
- Engineering optimization (1)
- Enterprise Architecture (1)
- GOSSAMER-1 (1)
Is part of the Bibliography
- no (74)
Sensor positioning and thermal model for condition monitoring of pressure gas reservoirs in vehicles
(2018)
Seismic design of buried pipeline systems for energy and water supply is not only important for plant and operational safety but also for the maintenance of the supply infrastructure after an earthquake. The present paper shows special issues of the seismic wave impacts on buried pipelines, describes calculation methods, proposes approaches and gives calculation examples. This paper regards the effects of transient displacement differences and resulting tensions within the pipeline due to the wave propagation of the earthquake. However, the presented model can also be used to calculate fault rupture induced displacements. Based on a three-dimensional Finite Element Model parameter studies are performed to show the influence of several parameters such as incoming wave angle, wave velocity, backfill height and synthetic displacement time histories. The interaction between the pipeline and the surrounding soil is modeled with non-linear soil springs and the propagating wave is simulated affecting the pipeline punctually, independently in time and space. Special attention is given to long-distance heat pipeline systems. Here, in regular distances expansion bends are arranged to ensure movements of the pipeline due to high temperature. Such expansion bends are usually designed with small bending radii, which during the earthquake lead to high bending stresses in the cross-section of the pipeline. Finally, an interpretation of the results and recommendations are given for the most critical parameters.
The quest for life on other planets is closely connected with the search for water in liquid state. Recent discoveries of deep oceans on icy moons like Europa and Enceladus have spurred an intensive discussion about how these waters can be accessed. The challenge of this endeavor lies in the unforeseeable requirements on instrumental characteristics both with respect to the scientific and technical methods. The TRIPLE/nanoAUV initiative is aiming at developing a mission concept for exploring exo-oceans and demonstrating the achievements in an earth-analogue context, exploring the ocean under the ice shield of Antarctica and lakes like Dome-C on the Antarctic continent.
Retrofitting of existing parabolic trough collector power plants with molten salt tower systems
(2018)
Rare event simulation to optimise maintenance intervals of safety critical redundant subsystems
(2018)
Phase Repeatable Synthesizers as a New Harmonic Phase Standard for Nonlinear Network Analysis
(2018)
The vaginal prolapse after hysterectomy (removal of the uterus) is often associated with the prolapse of the vaginal vault, rectum, bladder, urethra or small bowel. Minimally
invasive surgery such as laparoscopic sacrocolpopexy and pectopexy are widely performed for the treatment of the vaginal prolapse with weakly supported vaginal vault after hysterectomy using prosthetic mesh implants to support (or strengthen) lax apical ligaments. Implants of different shape, size and polymers are selected depending on the patient’s anatomy and the surgeon’s preference. In this computational study on pectopexy, DynaMesh®-PRP soft, GYNECARE GYNEMESH® PS Nonabsorbable PROLENE® soft and Ultrapro® are tested in a 3D finite element model of the female pelvic floor. The mesh model is implanted into the extraperitoneal space and sutured to the vaginal stump with a bilateral fixation to the iliopectineal ligament at both sides. Numerical simulations are conducted at rest, after surgery and during Valsalva maneuver with weakened tissues modeled by reduced tissue stiffness. Tissues and prosthetic meshes are modeled as incompressible, isotropic hyperelastic materials. The positions of the organs are calculated with respect to the pubococcygeal line (PCL) for female pelvic floor at rest, after repair and during Valsalva maneuver using the three meshes.