重晶石混凝土压电声场探伤仿真模拟与试验研究  

Simulation and experimental study in piezoelectric sound field flaw detection of barite concrete

作　　者：邓伟 刘卫东[1] 钟志民[2] 王东辉[2] 李锴[2] DENG Wei;LIU Weidong;ZHONG Zhimin;WANG Donghui;LI Kai(School of Environment and Architecture,University of Shanghai for Science and Technology,Shanghai 200093,China;China Nuclear Power Plant Operation Service Technology Co.,Ltd.,Shanghai 200233,China)

机构地区：[1]上海理工大学环境与建筑学院,上海200093 [2]国核电站运行服务技术有限公司,上海200233

出　　处：《混凝土与水泥制品》2023年第11期30-35,共6页China Concrete and Cement Products

基　　金：国家科技重大专项项目(2018ZX06002008)。

摘　　要：基于COMSOL平台对重晶石混凝土的缺陷检测进行了仿真模拟及试验验证。结果表明:在多物理场耦合作用下,若边界条件与缺陷设定合理、模型建立准确,可以得到压电声场在各种介质中的传播路径与声场分布;通过压电探头接收的电信号与超声波位移场结合可以判断超声波的传播路径,从而对缺陷进行定位和定量计算缺陷半径;模拟缺陷半径接近实测与设计缺陷半径。Based on COMSOL platform,the defect detection of baryte concrete was simulated.The results show that the propagation path and sound field distribution of piezoelectric sound field in various media can be obtained even under the coupling of multiphysics simulation,as long as the boundary and defect are set reasonably and the model is established accurately.By combining the electrical signal received by the piezoelectric probe with the ultrasonic displacement field,the propagation path of the ultrasonic wave can be determined,thereby locating and quantitatively calculating the defect radius.The simulated defect radius is close to the measured and designed defect radius.

关 键 词：压电声场 多物理场耦合仿真 重晶石混凝土 无损检测 

分 类 号：TU528.19[建筑科学—建筑技术科学]