摘要
介绍了一种利用纵波直探头现场测定新型耐热钢材料(如P91钢)横波声速的新方法。利用纵波直探头在工件材料中产生的变型横波,通过探讨该变型横波的产生原因及传播路径,推导出该工件材料的横波声速计算公式。检测过程中,通过修正斜探头的折射角度和AVG曲线,从而提高对工件中缺陷的定位精度,以避免生产过程中的漏检和误判。
This paper introduces a new method for field determination of a new type of heat resistant steel materials （such as P91 steel） shear wave sound velocity using normal probes. Using the variant transverse wave from the normal probe in the workpiece, exploring the causes and the propagation path of the variant shear wave , deduced the transverse wave sound velocity calculation formula for the material. When testing, correct the angle of refraction and AVG curve. So that increasing the positioning accuracy of the defects , and avoiding the undetected and misjudgment.
出处
《无损检测》
2013年第12期19-23,共5页
Nondestructive Testing
关键词
超声波探伤
横波声速
声特性
耐热钢
Ultrasonic testing
Shear wave velocity
Acoustic characteristics
Heat-resistant steel
