奥氏体不锈钢焊缝的二维距离-波幅曲线检测方法
2D DAC Curve Testing Method of Austenitic Stainless Steel Welds
摘 要
为准确定量奥氏体不锈钢焊缝缺陷, 制作了人工缺陷试块, 测定了各人工缺陷反射回波, 通过分析焊缝形貌, 选取合适步进插值, 制成二维距离-波幅曲线, 以此对焊缝的实际检测回波进行修正并定量缺陷。
奥氏体不锈钢
缺陷定量
DAC曲线
Ultrasonic testing
Austenitic stainless steel
Defect quantification
DAC curve
Abstract
In order to test the defects in austenitic stainless steel welds quantitatively and exactly, the reflection echo of artificial defects in reference block was measured, and the step of interpolation was chose by analyzing the shape of welds, then, the distance-amplitude curve was drawn, based on it, the practical testing echo was modified to test the defects quantitatively and exactly.
中图分类号 TG115.28
所属栏目 实践经验
基金项目
收稿日期 2010/3/5
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备注顾炳忠(1962-)男, 助工, 大专, 无损探伤主管, 长期从事无损探伤工作。
引用该论文: GU Bing-Zhong. 2D DAC Curve Testing Method of Austenitic Stainless Steel Welds[J]. Nondestructive Testing, 2010, 32(7): 551～552
顾炳忠. 奥氏体不锈钢焊缝的二维距离-波幅曲线检测方法[J]. 无损检测, 2010, 32(7): 551～552
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参考文献
【1】张鹰, 雷毅, 程真喜, 等.奥氏体不锈钢焊接接头的超声波检测研究[J].石油化工设备, 2004, 33(2): 14-17.
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