各向异性
材料科学
超声波检测
超声波传感器
焊接
横波
无损检测
纵波
声学
剪切(地质)
相控阵
结构工程
光学
复合材料
波传播
工程类
电气工程
物理
量子力学
天线(收音机)
作者
Anmol Birring,J. G. Williams
出处
期刊:Materials evaluation
[American Society for Nondestructive Testing]
日期:2023-06-01
卷期号:81 (6): 24-33
标识
DOI:10.32548/2023.me-04333
摘要
Weld inspection of stainless steel pipes and pressure vessels is one of the most challenging and difficult inspections for ultrasonic testing. This is due to variations in grain structure and associated anisotropy. Anisotropy causes grain scattering and adversely affects propagation of sound waves. The effect is more telling for shear waves, which, in many cases, have almost no ability to penetrate the weld volume. Longitudinal waves are affected to a lesser degree by anisotropy and can be applied for such tests. Angle beam or refracted longitudinal waves are, therefore, the accepted method for stainless steel weld inspections.
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