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介绍小径薄壁管超声无损检测的最新进展。采用相控阵(PA)曲面线阵探头和特制的小型扫查器,解决小管入射声波散焦和现场可达性受限两大难题,缺陷测长准确度明显提高,且新型扫查器可适应多规格小管检测。另外还通过建模仿真,确定阵列最佳曲率。以上三大改进,使大量小管在制检测和在用检测能符合国际法规-ASME相关要求。
Introducing the latest development of ultrasonic nondestructive testing of small diameter thin - walled tubes. The use of phased array (PA) surface line array probe and a special small scanner to solve the two small tube incident sound wave defocusing and field accessibility constraints, the accuracy of the defect length measurement significantly improved, and the new scanner can Adapt to many specifications of small tube detection. In addition, through modeling and simulation to determine the optimal curvature of the array. The above three major improvements, so that a large number of small tube in-system testing and in-service testing to comply with international regulations-ASME related requirements.