| 小径管焊缝相控阵超声检测新动态 |
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| 引用本文： | 李衍.小径管焊缝相控阵超声检测新动态[J].无损探伤,2009,33(1):6-10. |
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| 作者姓名： | 李衍 |
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| 作者单位： | 江苏太湖锅炉股份有限公司,江苏无锡,214187 |
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| 摘 要： | 介绍小口径薄壁管环焊缝用横向曲面相控阵超声探头进行探伤与定量的新方法。制作了φ70×6．5和φ38×4两种钢试样管，试样管中加工了φ1mm通孔和深×宽=0．5mm×0．5mm（长分别为6．9mm和6．6mm）的线槽。相控阵图像仿真显示验证结果表明：曲面相控阵聚焦的缺陷定量准确度明显优于平面相控阵和矩阵探头，而且，该方法简单、经济。
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| 关 键 词： | 小口径薄壁管 环焊缝 超声检测 曲面相控阵 平面相控阵 矩阵 仿真显示 缺陷定量 |
Recent Developments of Phased Array Ultrasonic Inspection for Small Pipe Welds |
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| Authors: | LI Yan |
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| Affiliation: | LI Yan (Jiangsu Taihu Boiler Co. , Ltd. , Wuxi 214187, China) |
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| Abstract: | This article describes a new testing and defect-sizing method for girth welds of small diameter and thin wall pipes using phased arrays curved in the passive axis. Both modelling and experiments have shown that curving the array for focusing significantly improves the sizing over the flat arrays or the matrix arrays. And it is an economic and simple solution. |
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| Keywords: | Small-diameter and thin-thickness pipes Girth welds Ultrasonic testing Curved arrays Flat arrays Matrix arrays Modelling and display Defect sizing |
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