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Reseach on Application of Air Coupled Ultrasonic Surface Wave Detection

机译:空气耦合超声波表面波检测的应用研究

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In the nondestructive testing of in-service gas pipeline, it is not applicable to use common coupling method. However, air coupled ultrasonic testing is an effective coupling method. This work presents an application of air coupled ultrasonic detection. Firstly, the basic principle and theory of air coupled ultrasonic testing technology are introduced, and the attenuation law of ultrasonic wave in air is analyzed, then the air coupled ultrasonic surface wave detection system is set up. Experiment is carried out on a testing block with a number of cracks, the result verifies the feasibility of detection system.
机译:在不良机的在内的储气管道中,不适用于使用共同的耦合方法。然而,空气耦合超声波测试是一种有效的耦合方法。这项工作提出了空气耦合超声波检测的应用。首先,介绍了空气耦合超声检测技术的基本原理和理论,分析了空气中超声波的衰减定律,然后设立了空气耦合超声波表面波检测系统。实验在具有多个裂缝的测试块上进行,结果验证了检测系统的可行性。

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