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Kim, Ju-Young
Robust Multifunctional Materials Lab
Research Interests
  • Flexible / stretchable devices, nano-mechanics, nanoporous metal, materials reliability

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Feasible evaluation of flow properties and stress state of structural materials using instrumented indentation tests

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Title
Feasible evaluation of flow properties and stress state of structural materials using instrumented indentation tests
Author
Kim, Ju-YoungLee, Jung-SukLee, Kyung-WooKim, Kwang-HoKwon, Dongil
Keywords
Flow properties; Instrumented indentation test; Representative stress and strain; Residual stress; Weldment
Issue Date
2006
Publisher
Trans Tech Publications Ltd.
Citation
KEY ENGINEERING MATERIALS, v.326-328, no., pp.487 - 492
Abstract
Flow properties and stress state are indispensable factors for safety assessment of structural materials in operation, which were evaluated using instrumented indentation tests (IITs). Flow properties were obtained by defining representative stress and strain, and IIT results for 10 steel materials were discussed by comparing with those from uniaxial tensile tests. The indentation load-depth curve is significantly affected by the presence of residual stress, and the stress-induced load change was converted to a quantitative stress value. The stress state of a friction stir-welded joint of API X80 steel was evaluated and compared with that measured by energy-dispersive X-ray diffraction.
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ISSN
1013-9826
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MSE_Journal Papers
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