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压力容器声发射检测技术中声发射波在不同壁厚构件上的传播特性与衰减特性是影响定位精度的重要因素,同时也对评价缺陷源的活动度、强度起着重要作用。因此,要研究压力容器声发射检测技术,首先必须考虑不同壁厚情况下,声波的传播特性及衰减情况。从声波传播的观点来看,构件的壁厚和声波频率是影响声波传播的因素。因此,可以用参数S=d×f~([1,2])来定义厚板和薄板。其中d为
The acoustic emission characteristics and attenuation characteristics of acoustic emission waves in pressure vessel acoustic emission detection technology are important factors affecting the positioning accuracy, and also play an important role in evaluating the activity and intensity of the defect sources. Therefore, to study the pressure vessel acoustic emission detection technology, we must first consider the case of different wall thickness, the propagation characteristics of sound waves and attenuation. From the point of view of sound wave propagation, the wall thickness and sound frequency of the member are factors that influence the propagation of sound waves. Therefore, the thick plate and the thin plate can be defined by the parameter S = d × f ~ ([1,2]). Where d is