电焊机2018，Vol.48Issue(3)：163-166,4.DOI:10.7512/j.issn.1001-2303.2018.03.
表面耦合状态对A7N01铝合金残余应力检测误差的影响
Effect of surface coupled state on detection errors of residual stress of A7N01 aluminum alloys
摘要
Abstract
The surface radian,surface roughness and surface adhesive materials will affect the detection errors of residual stress of the components when the vehicles were under ultrasonic wave residual stress detection,then the detection results will affect the residual stress distribution and peak value greatly.This paper is focused on the research of the effect of surface radian,surface roughness and surface adhesive materials of A7N01 aluminum alloys.The results showed that the arc probes should be adopted when the surface was in the circular arc transition.The abrasive papers should be used to polish the sandblasted surface and it would promote the detection precision but the detection results would be affected if the surface was in excessive polished and formed additive stress layer and destroyed the surface.The painting coating could be detection directly and the painting layer did not affect the first critical incident angle greatly but affect the t0 greatly.So the t0 must be amended.关键词
表面耦合/A7N01铝合金/残余应力/表面弧度/表面粗糙度/表面附着物Key words
surface coupled/A7N01 aluminum alloys/residual stress/surface radian/surface roughness/surface adhesive materials分类
矿业与冶金引用本文复制引用
赵佳佳,戴忠晨,火巧英,孟宪伟,朱忠尹,祝鹏飞..表面耦合状态对A7N01铝合金残余应力检测误差的影响[J].电焊机,2018,48(3):163-166,4.基金项目
城轨车辆铝合金车体焊接残余应力检测标准技术研究(KJ 16-67 C048) （KJ 16-67 C048）
