兰姆波在薄钢板无损检测中的应用研究
Experimental Study for Nondestructive Testing of Steel Sheet by Lamb Waves
摘 要
通过在钢板上钻制直径不等的孔来模拟钢板中的孔洞类缺陷，采用线切割加工出不同深度的狭缝来模拟钢板中的分层缺陷。采用一发一收法，分别在两种厚度的钢板上激励出兰姆波进行检测，通过对比分析检测到的缺陷前后板中兰姆波信号，采用时频分析方法识别出板中激发的兰姆波模式以及模态转换现象，初步确定特定缺陷形态对兰姆波在板中传播的影响。
兰姆波
时频分析
Nondestructive testing
Lamb waves
Time-frequency analysis
Abstract
The holes with different diameter were drilled in the steel sheet to simulate the hole-class defects, and slots with different depth were cut by WEDM in the steel sheet to simulate the lamination defects. The two types of plates were detected by pitch-catch technique with Lamb waves respectively. Signals which were detected in the defect-free plate and plate with defect were compared. Time-frequency analysis was employed to recognize the Lamb wave modes and mode conversion, and some effect of the given defects on Lamb waves in the steel sheet is determined primarily.
中图分类号 TG115.28
所属栏目 试验研究
基金项目 湖北省自然科学基金(2004ABA019)；湖北省教育厅基金项目(2004D009)；宁波市自然科学基金(2006A610025)
收稿日期 2006/11/15
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备注王 杜(1981-)，男，硕士研究生，从事超声波无损检测及其信号处理的研究工作。
引用该论文: WANG Du,ZHENG Xiang-ming,TANG Zheng-lian,ZHANG Chun,ZHANG Shi-chang,CHEN Yi-hong. Experimental Study for Nondestructive Testing of Steel Sheet by Lamb Waves[J]. Nondestructive Testing, 2007, 29(4): 193～196
王 杜,郑祥明,唐正连,张 春,张诗昌,陈贻宏. 兰姆波在薄钢板无损检测中的应用研究[J]. 无损检测, 2007, 29(4): 193～196
被引情况:
【1】和儒辉,王开圣,赵志敏,张吉华,季仁东,沈令斌, "基于时频分析技术的激光超声Lamb波模式识别",理化检验－物理分册 48, 151-155(2012)
【2】李剑,刘松平, "钢/橡胶胶接结构中脱粘缺陷的Lamb波定量检测",无损检测 31, 525-527(2009)
【3】王 晶,周 波, "铝板结构主动Lamb波扫查合成损伤成像方法",无损检测 32, 246-248(2010)
【4】滕飞,李大勇,高桂丽, "超声兰姆波在铝合金薄板中的传播模式",无损检测 31, 433-437(2009)
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参考文献
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【2】刘镇清.无损检测中的超声兰姆波［J］.无损检测,1999,21(9):409-423.
【3】Krautkramer J.超声检测技术［M］.李 靖，等，译.广州：广东科技出版社,1984:277.
【4】Cohen L. Time-frequency distributions: a review［J］. Proceedings of the IEEE,1989,77(7):941-981.
【5】Proser W H, Seale Michael D. Time-frequency analysis of the dispersion of Lamb modes［J］. J Acoust Soc Am,1999,105(5):2669-2676.
【6】[美]阿肯巴赫.弹性固体中波的传播［M］.洪锦如，译.上海：同济大学出版社,1992.
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