利用兰姆波检测氧化锆陶瓷板的裂纹缺陷研究  

Research on Detecting Crack Defects in ZrO_(2) Ceramic Plates Using Lamb Waves

作　　者：张峰 赵通 冀国俊[2] ZHANG Feng;ZHAO Tong;JI Guojun(Institute for the inspection and Research of Inner Mongolia special equipment,Hohhot 010013,China;School of Chemical Engineering,Inner Mongolia University of Technology,Hohhot 010051,China)

机构地区：[1]内蒙古自治区特种设备检验研究院,呼和浩特010013 [2]内蒙古工业大学化工学院,呼和浩特010051

出　　处：《无损探伤》2024年第4期16-20,共5页Nondestructive Testing Technology

基　　金：国家自然科学基金(12062020)。

摘　　要：根据兰姆波在固体介质中的传播机理和频散特性,通过构建兰姆波检测氧化锆陶瓷板裂纹缺陷模型,探究了利用单一模式兰姆波检测氧化锆陶瓷板缺陷的可行性。对于纵向裂纹,兰姆波S_(0)模态相比A_(0)模态更为敏感且其衰减小、传播距离远,故选定S_(0)模态兰姆波检测氧化锆陶瓷板裂纹缺陷。结果表明:裂纹深度与回波信号幅值呈正相关;裂纹方向0°~90°范围内与回波信号幅值呈负相关;裂纹缺陷距离信号源越远,回波信号幅值越小。本文为使用单一模式兰姆波检测氧化锆陶瓷背板缺陷提供理论参考依据。According to the propagation mechanism and dispersion characteristics of Lamb waves in solid media,the feasibility of using single mode Lamb waves to detect defects in ZrO_(2) ceramic plates was explored by constructing a Lamb wave detection model for ZrO_(2) ceramic plates.For longitudinal cracks,the Lamb wave S_(0) mode is more sensitive than the A_(0) mode and its attenuation is small,with a long propagation distance.In this paper,the S_(0) mode Lamb wave is selected to detect crack defects in ZrO_(2) ceramic plates.The results show that there is a positive correlation between crack depth and echo signal amplitude;The crack direction is negatively correlated with the amplitude of the echo signal within the range of 0°to90°;The farther away the crack defect is from the signal source,the smaller the amplitude of the echo signal.This paper provides a theoretical basis for using single mode Lamb wave to detect defects in ZrO_(2) ceramic plates.

关 键 词：氧化锆陶瓷 兰姆波 频散特性 有限元分析 

分 类 号：TG115.28[金属学及工艺—物理冶金]