TOFD技术在薄壁堆焊层裂纹缺陷检测中的应用
Inspection of Overlay Welding Crack by TOFD Technique
摘 要
研究了薄壁堆焊层裂纹类缺陷的TOFD检测技术, 讨论了裂纹类缺陷的TOFD检测特征, 分析了不同角度探头和不同探头间距检测结果的影响。结果表明, TOFD技术可以检测到表面下3~10 mm内的垂直裂纹, 结合A扫描信号和B, D扫描图像的特征, 能够有效地对裂纹状缺陷进行识别、定位和定量, 为堆焊质量评价提供可靠准确的依据。
堆焊层
裂纹缺陷
Time of flight diffraction technique
Overlay welding
Crack
Abstract
The overlay welding cracks were inspected by TOFD technique. Detecting features of TOFD of cracks were studied, and the influences of angle and distance of probe pairs on detecting results were analyzed. The results showed that TOFD technique could detect vertical cracks correctly located 3~10 mm under the surface. Combined with A-scanning signals, B-scanning and D-scanning images it could identify, locate and quantify crack-like defects effectively, and provide reliable and accurate information for the estimation of the quality of overlay welding.
中图分类号 TG115.28
所属栏目 试验研究
基金项目
收稿日期 2008/11/15
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备注刘晴岩(1961-), 男, 副教授, 从事无损检测技术的应用研究和教学研究。
引用该论文: LIU Qing-Yan,HAO Yi-Yun,ZHANG Jian,ZHANG Wei. Inspection of Overlay Welding Crack by TOFD Technique[J]. Nondestructive Testing, 2010, 32(5): 364～366
刘晴岩,郝以运,张 俭,张 伟. TOFD技术在薄壁堆焊层裂纹缺陷检测中的应用[J]. 无损检测, 2010, 32(5): 364～366
被引情况:
【1】康达,张树潇,金士杰,刘丽丽,张侃,张东辉,罗忠兵,杨会敏,林莉,房云龙, "基于几何方法的焊缝倾斜裂纹TOFD定量检测",无损检测 38, 1-5(2016)
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参考文献
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【2】Mihara T, Otsuka Y, Cho H, et a1.Time of flight diffraction measurement using laser ultrasound［J］. Experiment Mechanics, 2006(46): 561-567.
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【4】Honarvar F, Sheikhzadeh H, Moles M, et al. Improving the time-resolution and signal-to-noise ratio of ultrasonic NDE signals［J］. Ultrasonics, 2004(41): 755-763.
【2】Mihara T, Otsuka Y, Cho H, et a1.Time of flight diffraction measurement using laser ultrasound［J］. Experiment Mechanics, 2006(46): 561-567.
【3】李衍.超声TOFD原理和方法要领［J］.无损检测, 2007, 29(2): 88-93.
【4】Honarvar F, Sheikhzadeh H, Moles M, et al. Improving the time-resolution and signal-to-noise ratio of ultrasonic NDE signals［J］. Ultrasonics, 2004(41): 755-763.
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