Evaluation of Strain Field Around Impacted Particles by Applying Electron Moiré Method
Evaluation of Strain Field Around Impacted Particles by Applying Electron Moiré Method
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DOI：
10.1007/s11666-007-9129-1
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发表时间：
2007-05
影响因子：
3.1
通讯作者：
M. Watanabe;S. Kishimoto;Y. Xing;K. Shinoda;S. Kuroda
中科院分区：
文献类型：
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作者：
M. Watanabe;S. Kishimoto;Y. Xing;K. Shinoda;S. Kuroda
最近，热喷涂界将相当多的注意力集中在冷喷涂和温喷涂技术上，其中喷涂颗粒的温度保持在其熔点以下，并且基于固体颗粒和基材之间的冲击现象发生粘附。粘附机制尚不清楚，但界面处的机械变形程度被认为是影响该机制的关键因素。然而，直接测量界面处的应变是非常困难的。相反，在这项工作中，采用电子莫尔法测量了热喷涂沉积喷射的撞击颗粒周围基底上的应变场，并与数值模拟结果进行了比较。
Recently, the thermal-spray community has focused considerable attention on cold-spray and warm-spray techniques, in which the temperatures of sprayed particles are kept below their melting point and adhesion occurs based on the impact phenomenon between a solid particle and a substrate. The mechanisms of adhesion are still unclear, but the degree of the mechanical deformation at the interface is considered to be a key factor influencing this mechanism. However, it is very difficult to directly measure the strain at the interface. Instead, in this work, the strain fields on a substrate around an impacted particle sprayed by warm-spray deposition were measured by applying electron Moiré method, and compared with numerical simulation results.