Results 101 to 110 of about 1,067,690 (293)

Towards a statistical theory of solid dry friction

, 1997
Wearless dry friction of an elastic block of weight N, driven by an external force F over a rigid substrate, is investigated. The slider and substrate surfaces are both microscopically rough, interacting via a repulsive potential that depends on the ...
Nattermann, T., Volmer, A.
core   +1 more source

Characterization of Nitinol Produced by Laser Powder Bed Fusion for Mechanical Metamaterial Applications

Advanced Engineering Materials, EarlyView.
Stabilization of L‐PBF Ni50.7Ti49.3 under low‐cycle loading was investigated. Recoverable strain after cycling was dependent on the amount of applied load. Recovery ratio was 53.4% and 35.1% at intermediate and high load, respectively. The maximum total strain reached 10.3% at a high load of 1200 MPa.
Ondřej Červinek, Jakub Hurník, Miroslav Šmíd, Ondřej Zobač, Melanie Todt, Daniel Koutný   +5 more
wiley   +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

Structural response of A286 superalloy to rotary friction welding at different rotation speed

Materials Research Express, 2020
Rotary friction welding was conducted on A286 with a diameter of ϕ 25 mm under 300, 900 and 2100 rpm to understand the structural response of the joint welded at different rotation speeds.
Feng Jin, Jinglong Li, Dan Chen, Zhongxiang Liao, Junmiao Shi, Jiangtao Xiong, Fusheng Zhang   +6 more
doaj   +1 more source

Theory of friction: contribution from fluctuating electromagnetic field

, 2006
We calculate the friction force between two semi-infinite solids in relative parallel motion (velocity $V$), and separated by a vacuum gap of width $d$.
, A I Volokitin, B N J Persson, Bhushan B, Krim J, Levitov L S, Lifshitz E M, Pendry J B, Persson B N J, Persson B N J, Polevoi V G, Rytov S M, Schaich W L, Singer I L, Teodorovich E V   +14 more
core   +1 more source

On the Influence of Antioxidants and Recycled MgO–C Source Material on the Mechanical Properties of Carbon‐Bonded Magnesia Refractories

Advanced Engineering Materials, EarlyView.
The presented study focuses on the fracture behaviour of carbon‐bonded magnesia MgO–C refractories, where environmentally friendly fructose, collagen and lignin serve as temporary binding agents. The partial substitution of the source material with recycled MgO–C reduces the fracture resistance, which can be counteracted by the additional introduction ...
Marc Neumann, Tom Weber, Jana Hubálková, Florian Kerber, Dinesh Kumar Gunasekar, Hans Jelitto, Christos G. Aneziris   +6 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

Analysis of microstructural evolution and mechanical properties of FGH101 powder superalloy and IN718 deformed superalloy via inertia friction welding

Frontiers in Materials
Nickel-based superalloys are indispensable in aerospace engines due to their exceptional high-temperature strength, oxidation resistance, and corrosion resistance, making them critical for joining processes such as inertia friction welding (IFW), which ...
Jun Zhou, Jun Zhou, Yongqiang Zhang, Yongqiang Zhang, Yongqiang Zhang, Feng Qin, Feng Qin, Xuelong Zhang, Xuelong Zhang, Hao Wang, Hao Wang, Ze Liu, Ze Liu, Wenhan Zhang, Wenhan Zhang, Caiyan Huang, Caiyan Huang, Chunbo Zhang, Chunbo Zhang   +18 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

Transition between Friction Modes in Adhesive Contacts of a Hard Indenter and a Soft Elastomer: An Experiment

Lubricants
The tangential adhesive contact (friction) between a rigid steel indenter and a soft elastomer at shallow indentation depths, where the contact exists mainly due to adhesion, is investigated experimentally.
Iakov A. Lyashenko, Thao H. Pham, Valentin L. Popov   +2 more
doaj   +1 more source