Results 31 to 40 of about 150,864 (258)

The Fabrication and Indentation of Cubic Silicon Carbide Diaphragm for Acoustic Sensing

open access: yesMicromachines, 2021
In this study, 550 nm thick cubic silicon carbide square diaphragms were back etched from Si substrate. Then, indentation was carried out to samples with varying dimensions, indentation locations, and loads.
Siti Aisyah Zawawi   +3 more
doaj   +1 more source

Indentation of ultrathin elastic films and the emergence of asymptotic isometry

open access: yes, 2015
We study the indentation of a thin elastic film floating at the surface of a liquid. We focus on the onset of radial wrinkles at a threshold indentation depth and the evolution of the wrinkle pattern as indentation progresses far beyond this threshold ...
Davidovitch, Benny   +4 more
core   +1 more source

Error estimation of the physical and mechanical characteristics measurements by indentation

open access: yesПриборы и методы измерений, 2018
The active application in the practice of testing the indentation methods, in particular to measure the physical and mechanical properties of metals, polymers, biological technologies demands to development techniques for the measurement error estimation.
A. P. Kren   +2 more
doaj   +1 more source

Scratch Behaviour of Bulk Silicon Nitride Ceramics

open access: yesMicromachines, 2021
Si3N4 ceramic is generally recognized as being difficult to machine due to its hardness and brittleness. It is necessary to control the normal load applied and the machined depth of the abrasive particles in order to eliminate surface/subsurface damage ...
Xiaolan Xiao   +5 more
doaj   +1 more source

Structure-mechanics relationships of collagen fibrils in the Osteogenesis Imperfecta Mouse model [PDF]

open access: yes, 2015
The collagen molecule, which is the building block of collagen fibrils, is a triple helix of two α1(I) chains and one α2(I) chain. However, in the severe mouse model of osteogenesis imperfecta (OIM), deletion of the COL1A2 gene results in the ...
Andriotis, OG   +7 more
core   +4 more sources

Indentation fracture toughness of Aluminium-Graphite composites: influence of nano-particles

open access: yesFracture and Structural Integrity
n the field of composite materials, extensive research has been undertaken on aluminum-graphite composites. However, a research gap has been identified regarding the specific influence of nano-sized graphite particles on their fracture toughness ...
Alqahtani Ibrahim   +5 more
doaj   +1 more source

Fracture toughness of a zirconia engineering ceramic and the effects thereon of surface processing with fibre laser radiation [PDF]

open access: yes, 2010
Vickers hardness indentation tests were employed to investigate the near-surface changes in the hardness of a fibre laser-treated and an as-received ZrO2 engineering ceramic.
Lawrence, Jonathan   +2 more
core   +3 more sources

Effects of porosity on dynamic indentation resistance of silica nanofoam. [PDF]

open access: yes, 2017
The dynamic indentation behaviors of monolithic silica nanofoams of various porosities are investigated. When the pore size is on the nm scale, as the porosity increases, despite the decrease in mass density, the resistance offered by silica nanofoam to ...
Qiao, Yu, Zhao, Cang, Zhong, Ying
core   +2 more sources

Comparative study of abrasion via microindentation and microscratch tests of reinforced and unreinforced lamellar cast iron

open access: yesFriction, 2018
This study compares micro-abrasive wear in two kinds of grey cast iron. Classical lamellar cast iron with fully pearlitic matrix (FGL1) and lamellar micro-alloyed cast iron with phosphorus and boron (FGL2) are used.
Mohammed Mendas, Stéphane Benayoun
doaj   +1 more source

Toward Material Property Extraction from Dynamic Spherical Indentation Experiments on Hardening Polycrystalline Metals

open access: yesMetals, 2023
Static indentation and dynamic indentation are reviewed, with a focus on extraction of material properties of isotropic strain-hardening polycrystalline metals that may be rate- and temperature-sensitive. Static indentation is reviewed first, followed by
John D. Clayton   +3 more
doaj   +1 more source

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