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通过对活塞声源的声场分析,得出平面探头的声场及发射声束的特性公式,理论计算数值与试验数值一致,此结果对定量超声波探伤中探头、频率的选择有一定的指导意义。
Through the analysis of sound field of the piston sound source, the formula of the sound field of the plane probe and the characteristic of the emitted sound beam are obtained. The calculated values agree well with the experimental values. This result is of guiding significance for the choice of the probe and the frequency in the quantitative ultrasonic flaw detection.