Results 31 to 40 of about 5,882 (208)

Depth-sensing indentation tests in studying plastic instabilities [PDF]

open access: yes, 2004
This review surveys the phenomenon of plastic instabilities occurring in depth-sensing indentation measurements. Investigations presented focus on the characterization of Portevin-Le Chatelier type instabilities observed in different metal alloys during ...
Bobji   +14 more
core   +1 more source

Indentation Size Effect of Composite A356 + 6%FA Subjected to ECAP

open access: yesMetals, 2022
In this study, metal matrix-based composite (MMC) was subjected to Equal Chanel Angular Pressing (ECAP) in several passes to determine the influence of deformation on the hardness of the samples. Composite based on A356 aluminum alloy and reinforced with
Merima Muslić   +3 more
doaj   +1 more source

Thermal-Mechanical Properties of Polyurethane-Clay Shape Memory Polymer Nanocomposites [PDF]

open access: yes, 2010
Shape memory nanocomposites of polyurethane (PU)-clay were fabricated by melt mixing of PU and nano-clay. Based on nano-indentation and microhardness tests, the strength of the nanocomposites increased dramatically as a function of clay content, which is
Chen, Zhen Guo,   +7 more
core   +5 more sources

An alternative method for continuous property measurement during depth-sensing indentation [PDF]

open access: yes, 2007
Based on the Oliver-Pharr framework, an iteration scheme is proposed to continuously evaluate the hardness during monotonic loading in nanoindentation. The new method was applied to measure the hardness of various crystalline materials including Al, Cu ...
Chiu, YL, Feng, G, Ngan, AHW, Tang, B
core   +1 more source

Analytical modeling of surface roughness in precision grinding of particle reinforced metal matrix composites considering nanomechanical response of material [PDF]

open access: yes, 2019
Grinding is usually applied for particle reinforced metal matrix composites (PRMMCs) to achieve high ground surface quality. However, the surface quality especially surface roughness is difficult to predict theoretically due to different mechanical ...
Cai, Rui   +5 more
core   +1 more source

A comparison of He and Ne FIB imaging of cracks in microindented silicon nitride [PDF]

open access: yes, 2018
Helium ion microscopy (HIM) offers potential as a high spatial resolution technique for imaging insulating samples that are susceptible to charging artifacts.
Baggott, A.   +4 more
core   +1 more source

Exploitation of static and dynamic methods for the analysis of the mechanical nanoproperties of polymethylmetacrylate by indentation

open access: yesFracture and Structural Integrity, 2021
Elaborating an instrumented nanoindentation is to exercise non-destructive tests to be applied to volumes of polymethylmetacrylate (PMMA) materials in miniature. This work focuses on factors that explain the trends variation of mechanical properties like
Benaissa Soufiane   +6 more
doaj   +1 more source

Growth and texture of Spark Plasma Sintered Al2O3 ceramics: a combined analysis of X-rays and Electron Back Scatter Diffraction [PDF]

open access: yes, 2013
Textured alumina ceramics were obtained by Spark Plasma Sintering (SPS) of undoped commercial a-Al2O3 powders. Various parameters (density, grain growth, grain size distribution) of the alumina ceramics, sintered at two typical temperatures 1400{\deg}C ...
Barry Carter C.   +13 more
core   +5 more sources

Characterization of ageing resistant transparent nanocrystalline yttria-stabilized zirconia implants. [PDF]

open access: yes, 2020
The "Window to the Brain" is a transparent cranial implant under development, based on nanocrystalline yttria-stabilized zirconia (nc-YSZ) transparent ceramic material.
Aguilar, Guillermo   +6 more
core   +1 more source

Determination of the load-independent hardness by analyzing the nanoindentation loading curves: A case study on fused silica

open access: yesJournal of Advanced Ceramics, 2019
The nanoindentation loading curves measured on fused silica were analyzed based on the theoretical relationship derived by Malzbender et al. (J Mater Res 2000, 15: 1209–1212).
Yunbiao Duan, Danyu Jiang, Jin Hu
doaj   +1 more source

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