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Characterization of mechanical properties of machined surface by nanoindentation — Part 1: Simulation of indenter geometry effects

Chen, Ling LU ; Ahadi, Aylin LU ; Zhou, Jinming LU and Ståhl, Jan-Eric LU (2012) Swedish Production Symposium, 2012 In Swedish Production Symposium, SPS12 : Proceedings
Abstract (Swedish)
Abstract in Undetermined

The machined subsurface often undergoes severe deformation and possible microstructure changes in a small scale subsurface layer. Mechanical behavior of this shallow layer is critical for component performance such as fatigue and wear, thus characterization of the mechanical behavior of the machined subsurface in terms of micro/nano hardness, modulus, residual stresses and change of microstructure is vital. The mechanical behavior of this shallow layer is often hard to measure using traditional material testing, due to the small size of subsurface deformation region. With the nanoindentation method, mechanical behavior (nanohardness and modulus) at the microscale in subsurface can be measured.... (More)
Abstract in Undetermined

The machined subsurface often undergoes severe deformation and possible microstructure changes in a small scale subsurface layer. Mechanical behavior of this shallow layer is critical for component performance such as fatigue and wear, thus characterization of the mechanical behavior of the machined subsurface in terms of micro/nano hardness, modulus, residual stresses and change of microstructure is vital. The mechanical behavior of this shallow layer is often hard to measure using traditional material testing, due to the small size of subsurface deformation region. With the nanoindentation method, mechanical behavior (nanohardness and modulus) at the microscale in subsurface can be measured. However in nanoindentation, there are many parameters that significantly affect measurement reliability and thus may lead to errors in the evaluation of results. As the part of project of characterization of mechanical properties in machined surface by nanoindentation, the indenter geometry effects on elastic-plastic behaviour was investigated with use of finite element (FE) method in present work. The elastic-plastic behaviour as the response to indenter geometry, such as tip radius and angle, are simulated in the study by use of von Mises material model. The hardness and the Young modulus of the material are determined combining both analytical and numerical methods and their dependence on the tip radius and angle is investigated. (Less)
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Chapter in Book/Report/Conference proceeding
publication status
submitted
subject
in
Swedish Production Symposium, SPS12 : Proceedings
pages
8 pages
publisher
The Swedish Production Academy
conference name
Swedish Production Symposium, 2012
ISBN
978-91-7519-752-4
language
English
LU publication?
yes
id
1d1af5f3-9b14-4a90-ba84-51c3b6d3d73f (old id 2798578)
date added to LUP
2012-06-21 12:01:42
date last changed
2016-07-15 08:20:49
@inproceedings{1d1af5f3-9b14-4a90-ba84-51c3b6d3d73f,
  abstract     = {<b>Abstract in Undetermined</b><br/><br>
The machined subsurface often undergoes severe deformation and possible microstructure changes in a small scale subsurface layer. Mechanical behavior of this shallow layer is critical for component performance such as fatigue and wear, thus characterization of the mechanical behavior of the machined subsurface in terms of micro/nano hardness, modulus, residual stresses and change of microstructure is vital. The mechanical behavior of this shallow layer is often hard to measure using traditional material testing, due to the small size of subsurface deformation region. With the nanoindentation method, mechanical behavior (nanohardness and modulus) at the microscale in subsurface can be measured. However in nanoindentation, there are many parameters that significantly affect measurement reliability and thus may lead to errors in the evaluation of results. As the part of project of characterization of mechanical properties in machined surface by nanoindentation, the indenter geometry effects on elastic-plastic behaviour was investigated with use of finite element (FE) method in present work. The elastic-plastic behaviour as the response to indenter geometry, such as tip radius and angle, are simulated in the study by use of von Mises material model. The hardness and the Young modulus of the material are determined combining both analytical and numerical methods and their dependence on the tip radius and angle is investigated.},
  author       = {Chen, Ling and Ahadi, Aylin and Zhou, Jinming and Ståhl, Jan-Eric},
  booktitle    = {Swedish Production Symposium, SPS12 : Proceedings},
  isbn         = {978-91-7519-752-4},
  language     = {eng},
  pages        = {8},
  publisher    = {The Swedish Production Academy},
  title        = {Characterization of mechanical properties of machined surface by nanoindentation — Part 1: Simulation of indenter geometry effects},
  year         = {2012},
}