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表面波是一种仅限于在物体表面附近几个波长范围内传播的一种切变弹性波。对表面伤和近表层埋藏伤的探测,一般多采用磁粉、着色、萤光等探伤方法,而表面波的应用尚未引起足够的注意。随着超声波探伤技术的发展,表面波的优点逐渐显示出来。1973年营口仪器厂制成探测航空用轴承钢的八通道表面波全自动探伤机,1974年我国电力部门推广用表面波检查汽轮机叶片的根部和叶身裂纹。还有用表面波探
Surface waves are a type of shear elastic waves that are limited to propagation in several wavelength ranges near the surface of an object. Detection of surface injury and near-surface burial injuries, the general use of magnetic particles, coloring, fluorescent and other detection methods, and the application of surface waves has not yet attracted enough attention. With the development of ultrasonic testing technology, the advantages of surface waves gradually revealed. In 1973, Yingkou Instrument Factory made an eight-channel surface wave automatic detection machine for detecting aviation bearing steel. In 1974, the electric power department of our country popularized the root and leaf crack of steam turbine blades by surface waves. There is also the use of surface wave exploration