材料科学
超声波传感器
复合材料
应力场
残余应力
残余物
压力(语言学)
声发射
声学
结构工程
有限元法
工程类
物理
语言学
哲学
作者
W. T. Song,C. G. Xu,Q. X. Pan,X. C. Yang,L. Xu,J. Guo
出处
期刊:REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION: VOLUME 32
日期:2013-01-24
被引量:4
摘要
The ultrasonic regulation of internal residual stress in metal and nonmetal elastic solid component has been investigated. High-energy ultrasonic wave is applied to carbon steel and ordinary flat glass for residual stress control. An ultrasonic residual stress measurement device developed with the acoustoelastic theory is used to measure macro residual stress in time, to evaluate the residual stress regulation effectiveness. Based on the essence of residual stress, the interaction between acoustic wave and residual stress is analyzed, and dislocations theory is considered. When the ultrasonic energy supplied to the elastic solid is greater than the energy of dislocation, the internal residual stress will be released. Experiments result shows that as high energy acoustic field is applied, the local residual tensile stress in elastic solid specimen will shift gradually to beneficial compressive stress, thus the component’s fatigue strength, corrosion resistance and service life will be greatly improved.
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