Results 51 to 60 of about 1,628,342 (332)

Interface Direct Shear Tests on JEZ-1 Mars Regolith Simulant

Applied Sciences, 2021
The mechanical behaviors of Martian regolith-structure interfaces are of great significance for the design of rover, development of excavation tools, and construction of infrastructure in Mars exploration.
Kexin Yin, Jiangxin Liu, Jiaxing Lin, Andreea-Roxana Vasilescu, Khaoula Othmani, Eugenia Di Filippo   +5 more
doaj   +1 more source

Dynamic surface decoupling in a sheared polymer melt [PDF]

, 2005
We propose that several mechanisms contribute to friction in a polymer melt adsorbed at a structured surface. The first one is the well known disentanglement of bulk polymer chains from the surface layer.
Andrienko D., Cieplak M., Cottin-Bizonne C., D Andrienko, Grest G. S., K Kremer, Klein J., L. Delle Site, Leon S., Léger L., Persson B. N. J., X Zhou   +11 more
core   +2 more sources

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

Advanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti, Finn‐Lennard Janthur, Selina Raumel, Sascha Jan Zimmermann, Sarah Seffer, René Gustus, Sebastian Herbst, Marc C. Wurz, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Florian Nürnberger   +11 more
wiley   +1 more source

Nonlinear shear wave interaction at a frictional interface: Energy dissipation and generation of harmonics

, 2011
Analytical and numerical modelling of the nonlinear interaction of shear wave with a frictional interface is presented. The system studied is composed of two homogeneous and isotropic elastic solids, brought into frictional contact by remote normal ...
Meziane, A., Norris, A. N., Shuvalov, A. L.   +2 more
core   +1 more source

Mechanical Model for Shear Friction Capacity of Concrete at Construction Joints

Advances in Materials Science and Engineering, 2018
This study examined the reliability and limitations of code equations for determining the shear friction strength of a concrete interface with construction joints.
Seung-Jun Kwon, Keun-Hyeok Yang, Ju-Hyun Mun   +2 more
doaj   +1 more source

Effect of Oxygen Content on Surface and Subsurface Integrity During Turning of Ti–6Al–4V

Advanced Engineering Materials, EarlyView.
This study examines how oxygen content in the ambient atmosphere affects the surface and subsurface properties of Ti–6Al–4V during turning. Results show that oxygen does not influence surface roughness. However, machining in an extremely high vacuum‐adequate atmosphere increases surface hardness by up to 7.8% and induces compressive residual stresses ...
Benjamin Bergmann, Berend Denkena, Hilke Petersen, Florian Schaper   +3 more
wiley   +1 more source

Four‐Point Bending Tests at High Temperatures on Commercial MgO‐C Refractory Bricks with and Without Recyclate Considering Different Carbon Contents

Advanced Engineering Materials, EarlyView.
Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm, Lukas Knöchel, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +5 more
wiley   +1 more source

Critical packing in granular shear bands

, 2007
In a realistic three-dimensional setup, we simulate the slow deformation of idealized granular media composed of spheres undergoing an axisymmetric triaxial shear test.
A. Casagrande, A. N. Schofield, C. Lee, D. Daudon, H. Edelsbrunner, H. Sakaguchi, H. Tsunekawa, J. Desrues, J. Desrues, J. Kertész, J. Török, K. A. Alshibli, L. Cui, L. D. Landau, O. Reynolds, P. A. Cundall, S. Fazekas, S. Fazekas, S. N. Batiste, T. L. Youd, T. Pöschel, V. Trappe   +21 more
core   +1 more source

Investigation of the Dowel and Friction Forces in Fiber Reinforced Ultra High Performance Concrete Beams [PDF]

Engineering and Technology Journal, 2012
The phenomenon of dowel action as a shear transfer mechanism across cracks has long been recognized as an important component of the overall shear resistance capacity of reinforced concrete beams.
Kaiss F. Sarsam, Maha M. S. Ridha, Zainab H. Mahdi   +2 more
doaj   +1 more source

Influence of an Oxygen‐Free Atmosphere on Diamond‐Single‐Grain Scratching of Ti–6Al–4V

Advanced Engineering Materials, EarlyView.
Single‐grain scratching of Ti–6Al–4V is investigated under controlled, oxygen‐free, and ambient atmospheres using a novel experimental setup with in situ high‐speed imaging. The approach enables direct observation of chip formation and adhesion under suppressed oxidation.
Berend Denkena, Benjamin Bergmann, Michael Zenger   +2 more
wiley   +1 more source