Mode Identification and Application for Nondestructive Evaluation of Thin Aluminum Sheet by Lamb Waves
摘 要
在厚度为0.7 mm的铝板上制作直径为 0.6~1.8 mm的通孔, 以模拟薄铝板中的孔洞类缺陷。利用Matlab软件绘制了Lamb波的频散曲线和质点位移-幅度曲线。根据频散曲线和质点位移-幅度曲线, 选择S0模态的Lamb波。试验结果表明, S0模态Lamb波的信号峰值与缺陷大小具有良好的对应关系。
Abstract
The holes with different diameters were made in thin aluminum sheet with thickness of 0.7 mm to simulate the hole-class defects. Frequency dispersion curves and particle displacement curves were drawn by software Matlab. Based on frequency dispersion curves and particle displacement curves, S0 mode wave was selected out. Experimental results showed that good corresponding relationship between amplitude of S0 mode wave and size of the given defect existed.
中图分类号 TG115.28
所属栏目 科研成果与学术交流
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收稿日期 2008/12/26
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备注侯云霞(1982-), 女, 硕士研究生, 研究方向为材料的无损检测与评价。
引用该论文: HOU Yun-Xia,CHEN Jun,LIN Li. Mode Identification and Application for Nondestructive Evaluation of Thin Aluminum Sheet by Lamb Waves[J]. Nondestructive Testing, 2009, 31(7): 517~519
侯云霞,陈军,林莉. Lamb波在薄铝板无损评价中的模态识别与应用[J]. 无损检测, 2009, 31(7): 517~519
被引情况:
【1】李迎, "复合材料Lamb波检测中S0单模式信号的提取",无损检测 34, 30-33(2012)
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参考文献
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【5】Kazys R, Mazeika L, Barauskas R, et al. 3D Analysis of interaction of Lamb waves with defects in loaded steel plates[J]. Ultrasonics, 2006, 44: 1127-1130.
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【2】徐可北.金属薄板兰姆波检验技术[J].无损检测, 1999, 21(10): 461-465.
【3】刘增华, 何存富, 吴斌, 等.利用Lamb波对板状结构中隐蔽腐蚀缺陷的检测[J].实验力学, 2005, 20(3): 166-170.
【4】郑祥明, 杨齐, 郝国法, 等.金属薄板中缝类缺陷的Lamb波检测[J].无损检测, 2007, 29(21): 630-633.
【5】Kazys R, Mazeika L, Barauskas R, et al. 3D Analysis of interaction of Lamb waves with defects in loaded steel plates[J]. Ultrasonics, 2006, 44: 1127-1130.
【6】Filipczynski L, Pawlowski Z, Wehr J. Ultrasonic Methods of Testing Materials[M]. London: Butterworths, 1966.
【7】徐可北.兰姆波单模探伤可行性研究[J].无损检测, 1997, 19(8): 222-225.
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