Ultrasonic phased array length measurement of internal detects in butt weld

2016 23rd International Conference on Mechatronics and Machine Vision in Practice (M2VIP) Pub Date : 2016-11-01 DOI:10.1109/M2VIP.2016.7827340

T. Lei, Li Dong

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引用次数: 1

Abstract

Length measurement of internal defects in butt welds is very important for the quantitative assessment of ultrasonic testing. Ultrasonic phased array testing technology has been widely used because of great detection rate and detection efficiency. We analyzed characteristics and causes of ultrasonic phased array length measurement to provide an important basis for ultrasonic phased array testing process optimization and defect assessment of the butt weld, Firstly, CIVA numerical simulation software is used to simulate length measurement of ultrasonic phased array and conventional ultrasonic inspection. Secondly, some experiments are implemented including ultrasonic phased array testing, conventional ultrasonic testing and ray detection in butt weld testing plate and the results are compared and analyzed. Finally, according to simulation and experimental results, length measurement of typical internal defects in the butt weld has its own characteristics, which is closely related to the type of defect, the distance between probe and the weld, amplitude calibration, wedge block size and non deflection direction of acoustic beam diffusion, and other factors.

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对接焊缝内部检测的超声相控阵长度测量

对接焊缝内部缺陷长度的测量是超声检测定量评定的重要内容。超声相控阵检测技术因其检出率和检测效率高而得到了广泛的应用。分析了超声相控阵长度测量的特点及产生原因，为超声相控阵检测工艺优化和对接焊缝缺陷评估提供重要依据。首先，利用CIVA数值模拟软件对超声相控阵长度测量和常规超声检测进行了模拟。其次，在对接焊检测板上进行了超声相控阵检测、常规超声检测和射线检测实验，并对实验结果进行了对比分析。最后，根据仿真和实验结果，对接焊缝中典型内部缺陷的长度测量有其自身的特点，这与缺陷的类型、探头与焊缝的距离、幅度校准、楔块尺寸和声束扩散的非偏转方向等因素密切相关。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2016 23rd International Conference on Mechatronics and Machine Vision in Practice (M2VIP)

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