Stress mapping reveals extrinsic toughening of brittle carbon fiber in polymer matrix
Science and Technology of Advanced Materials, 2020 We conducted an in situ study on CFRP fracturing process using atomic-force-microscopy-based stress-sensitive indentation. Tensile stress distribution during fracture initiation and propagation was directly observed quantitatively.
Hongxin Wang +7 more
doaj +1 more source
Investigations of AE Signals Emitted From Dropped Indenter on Steel Pipes’ Surface
IEEE Access, 2021 Acoustic emission (AE) are stress waves created by the material deformation, which could be utilized to detect impacts of objects within different mechanical systems.
Mohamed Shehadeh +4 more
doaj +1 more source
Investigations of Micro-Deformation in Monocrystalline Copper at Low Temperatures via Indentation
Micromachines, 2022 Indentation experiments on differently oriented faces of monocrystalline copper were conducted to investigate the micro-deformation process at temperatures ranging from room temperature to 150 K.
Shunbo Wang +5 more
doaj +1 more source
The influence of the indenter tip-radius on indentation testing of brittle materials [PDF]
, 1999 Indentation testing of a brittle material using a notionally ‘sharp’ indenter may reveal several important physical properties, including fracture toughness, surface finish information and the residual stress state. In the case of shallow cone indenters,
Ciavarella, M. +3 more
core +1 more source
Temperature-Induced Internal Stress Influence on Specimens in Indentation Tests
Micromachines, 2022 The factors affecting the internal stress of specimens during indentation tests were investigated by finite element analysis (FEA) modelling. This was carried out to gain a qualitative understanding of the test errors introduced by the temperature ...
Shunbo Wang, Xianke Li, Hongwei Zhao
doaj +1 more source
Indentation size effects in crystalline materials: A law for strain gradient plasticity
, 1998 We show that the indentation size effect for crystalline materials can be accurately modeled using the concept of geometrically necessary dislocations. The model leads to the following characteristic form for the depth dependence of the hardness: H H 0 1+
W. Nix, Huajian Gao
semanticscholar +1 more source
Indentation Hardness Measurements at Macro-, Micro-, and Nanoscale: A Critical Overview
Tribology letter, 2017 The Brinell, Vickers, Meyer, Rockwell, Shore, IHRD, Knoop, Buchholz, and nanoindentation methods used to measure the indentation hardness of materials at different scales are compared, and main issues and misconceptions in the understanding of these ...
E. Broitman
semanticscholar +1 more source
Materials & Design (1980-2015), 2019 With the advances in instrumented indentation systems and testing methodologies, high speed indentation mapping with indents that take less than a second is now possible.
P. Phani, W. Oliver
semanticscholar +1 more source
, 2020 This study derives a uniaxial tensile flow from spherical indentation data using an artificial neural network (ANN) combined with finite element (FE) analysis.
Kyeongjae Jeong +5 more
semanticscholar +1 more source
Constitutive modelling and mechanical characterization of aluminium-based metal matrix composites produced by spark plasma sintering [PDF]
, 2010 Spark plasma sintering has been applied to the production of aluminium-based functionally graded material systems to be used in abrasive and high temperature conditions.
Estournès, Claude +6 more
core +1 more source