Modeling of ultrasonic nonlinearities for dislocation evolution in plastically deformed materials: Simulation and experimental validation
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- 作者：Wujun Zhua ; Mingxi Dengb ; Yanxun Xianga ; yxxiang@ecust.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Fu-Zhen Xuana ; Changjun Liua ; Yi-Ning Wangc
- 关键词：Ultrasonic nonlinearity ; Second-harmonic generation ; Plastic deformation ; Finite element modeling
- 刊名：Ultrasonics
- 出版年：2016
- 出版时间：May 2016
- 年：2016
- 卷：68
- 期：Complete
- 页码：134-141
- 全文大小：1531 K
文摘
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A nonlinear constitutive relationship was established based on analyses of mixed dislocation evolution.
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Finite element model was developed to study nonlinear ultrasonic propagation.
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Ultrasonic nonlinearity was used to study plastic damages in martensite stainless steel.
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It monotonically increases with plastic strain loading due to dislocation evolution.
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Results from simulations and experiments show a good consistency.