基于双光源法的直裂纹深度定量检测数值模拟研究  

Numerical Simulation of Quantitative Detection of Straight Crack Depth Based on Dual Light Source Method

作　　者：李喆 张晓彤 邓进[3] 潘强华[3] 徐光明[3] 张志远 李海洋 LI Zhe;ZHANG Xiaotong;DENG Jin;PAN Qianghua;XU Guangming;ZHANG Zhiyuan;LI Haiyang(AECC Shenyang Liming Aero Engine Co.,Ltd.,Shenyang 110000,China;School of Information and Communication Engineering,North University of China,Taiyuan 030051,China;China Special Equipment and Research Institute,Beijing 100029,China)

机构地区：[1]中国航发沈阳黎明航空发动机有限责任公司,辽宁沈阳110000 [2]中北大学信息与通信工程学院,山西太原030051 [3]中国特种设备检测研究院,北京100029

出　　处：《测试技术学报》2022年第6期461-467,共7页Journal of Test and Measurement Technology

基　　金：国家自然科学基金国家重大科学仪器研制资助项目(61927807);国家自然科学基金资助项目(11604304,11874386);“生物医学成像与影像大数据”山西省重点实验室开放研究基金资助项目(KF2020-04);先进制造技术山西省重点实验室开放基金资助项目(XJZZ202006);无损检测技术教育部重点实验室开放基金资助项目(EW202180221);中国特检院青年科技基金资助项目(2018青年08)。

摘　　要：围绕表面裂纹的深度检测,采用数值模拟方法对比了双光源下表面检测法和上表面检测法.结果表明,采用双光源检测法时,探针作用于上下表面均可对裂纹深度进行探测.对比两种检测手段,下表面检测法更易实现.针对深度为0.5 mm~2.5 mm的缺陷检测,下表面检测法的误差最高达到25.1%,而上表面检测法的裂纹深度测量误差均在2.5%以内,检测精度更高.In depth detection of surface cracks,this paper uses numerical simulation methods to compare the surface detection method and upper surface detection method of dual-source.The results show that the probe acts on the upper and lower surfaces can be detected on the upper and lower surfaces.Comparing the two detection methods,the lower surface detection method is easier to implement.For defect detection of 0.5 mm to 2.5 mm,the lower surface detection method has a maximum of 25.1%,while the upper surface detection method has a crack depth measurement error within 2.5%,In contract,the detection accuracy is higher.

关 键 词：激光超声 表面裂纹 双光源法 定量检测 

分 类 号：TB551[理学—物理]