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本文介绍用普通脉冲反射式超声探伤仪测量表面开口裂纹的几种超声横波和表面波方法。作者认为,横波最大反射波法、横波衍射双探头法是实际测量中可采用的方法。表面波时间延迟法及表面波波型转换法只适于某些特殊情况下的测量。
This article describes several methods of ultrasonic shear and surface wave measurements of open surface cracks using an ordinary pulse reflection ultrasonic flaw detector. The author believes that the maximum reflection wave shear wave method, shear wave diffraction dual-probe method is the actual measurement method can be used. Surface wave time delay method and surface wave mode conversion method is only suitable for some special circumstances of the measurement.