常规TOFD探头和相控阵TOFD探头对人工反射体检测效果的比较

Comparison of the Artificial Reflector Inspection Using Conventional TOFD Probe and Phased Array TOFD Probe

采用全自动相控阵超声波检测系统和常规多探头超声波检测系统,对全自动超声波试块进行检测,以比较相控阵TOFD探头和常规TOFD探头对人工反射体的检测效果。通过分析试块上TOFD尖角槽、横向槽及通槽的TOFD图像,表明多探头超声波检测系统采用常规TOFD探头的检测结果比全自动相控阵超声波检测系统采用相控阵TOFD探头的检测结果有强大优势,提出全自动相控阵超声波检测系统与常规TOFD探头组合配置是最佳方式。

A mechanized phased array UT system and a conventional multi-probe UT system were employed on an AUT calibration block to find the difference of artificial reflector inspection between phased array TOFD probe and conventional TOFD probe.After reviewed the TOFD images from the TOFD sharp-angled notch,transverse notch and center notch in the block,obverse advantage was found for the multi-probe UT system with a conventional TOFD probe beyond the mechanized phased array UT system with a phased array TOFD probe. Therefore,a mechanized UT system equipped with a conventional TOFD probe is the best configuration.