Results 271 to 280 of about 623,573 (324)

Characterization of Hard Coatings Using Acoustic Emission. [PDF]

open access: yesMaterials (Basel)
Škrobáková IS   +3 more
europepmc   +1 more source
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Fracture toughness in shales using nano-indentation

Journal of Petroleum Science and Engineering, 2020
Fracture toughness property is often ignored but has a significant impact on the hydraulic fracture design, i.e. length and height. It represents the resistance of the rock to hydraulic fracturing and is a direct indicator of rock fracability.
Ishank Gupta, C. Sondergeld, C. Rai
semanticscholar   +2 more sources

Nano-indentation and nano-scratching of pure nickel and NiTi shape memory alloy thin films: an atomic-scale simulation

Thin Solid Films, 2021
Issues with contact and friction in thin-film devices are inevitable in the field of micro-engineering, especially in micro-electro-mechanical systems (MEMS).
Zenglu Song   +5 more
semanticscholar   +1 more source

The role of rough surface in the size-dependent behavior upon nano-indentation

, 2021
The hardness measured by nano-indentation on metallic material with rough surface shows a significant deviation from the Nix-Gao relation, which established an important relation between the hardness and indentation depth at small scale (Nix and Gao ...
D. Tang   +5 more
semanticscholar   +1 more source

Mechanism of crack evolution in nano-indentation of single crystal silicon by atomistic simulations and theoretical analysis

Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2021
The molecular dynamics (MD) model of nano-indentation process was established to study the crack evolution in single crystal during nano-indentation.
Yuqi Zhou, Houfu Dai, Ping Li
semanticscholar   +1 more source

Friction Stir Welding of Dissimilar Materials: An Investigation of Microstructure and Nano-Indentation Study

Journal of Manufacturing Processes, 2020
Friction stir lap welding of aluminum and steel structures yields inhomogeneous microstructural changes, hooking defects and non-uniform layer of intermetallic compounds in the weld zones.
R. P. Mahto, Surjya K. Pal
semanticscholar   +1 more source

Nano-indentation of polymeric surfaces

Journal of Physics D: Applied Physics, 1998
This paper presents results of normal hardness, plasticity index and elastic modulus for a selection of organic polymers (a poly(methylmethacrylate), PMMA, a poly(styrene), PS, a poly(carbonate), PC, and an ultra-high molecular weight poly(ethylene), UHMWPE) obtained using the contact compliance method.
B. Briscoe, Fiori, Luca, E. Pelillo
openaire   +2 more sources

Inverse identification of cell-wall material properties of closed-cell aluminum foams based upon Vickers nano-indentation tests

, 2020
This study aims to develop an inverse approach to identifying the cell-wall material properties of closed-cell aluminum (Al) foams, which is based upon indentation tests, numerical simulation and optimization technique. Vickers nano-indentation tests are
Guangyong Sun   +4 more
semanticscholar   +1 more source

Micro and nano-indentation of MoSi2

Journal of Materials Science, 2004
Molybdenum disilicide based materials are candidate for high temperature structural applications, such as a furnace heating element and an electrical conductor in silicon intergrated circuit design or parts of engines [1]. MoSi2 exhibits a high melting point (2030 ◦C), excellent high temperature oxidation resistance, and posseses many convenient ...
M. Henžel   +4 more
openaire   +1 more source

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