现代电子技术2025，Vol.48Issue(4)：1-9,9.DOI:10.16652/j.issn.1004-373x.2025.04.001
非金属材料变形场的超声测量研究
Research on ultrasonic measurement of deformation field of non-metallic materials
摘要
Abstract
In order to realize real-time monitoring of non-metallic materials,judge and identify whether their surface structures are deformed or damaged,and take reliable warning measures in a timely manner,the electro-acoustic characteristics of the flexible piezoelectric sheet arranged on the acrylic plate subjected to external force are analyzed in detail,and a device that can be deformed by external force and a set of sensor system capable of ultrasonic detection are constructed.The sensor can make up for the shortcomings of the existing non-metallic detection equipment,such as high cost,complex operation,and difficulty in practical application.Multiple flexible piezoelectric sheets are arranged on a non-metallic plate,the optimal excitation frequency is selected to excite one of the flexible piezoelectric sheets,and the response signals of the rest of the flexible piezoelectric sheets are received and analyzed by continuously changing the degree of material deformation.The crack was simulated on the plate to detect the change of response signal in this state.The results show that when the material is deformed,the signal received by the flexible piezoelectric changes can changes and be correlated with the degree of deformation,while when a crack occurs,the transmitted signal energy can decay,and this change is positively correlated with the degree of damage.关键词
非金属材料/超声检测/变形场/柔性压电片/传感器/裂缝Key words
non-metallic material/ultrasonic testing/deformation field/flexible piezoelectric sheet transducer/sensor/crack分类
信息技术与安全科学引用本文复制引用
章扬科,金英,金卫良,裘凯军,李青..非金属材料变形场的超声测量研究[J].现代电子技术,2025,48(4):1-9,9.基金项目
浙江省重点研发计划项目:大型游乐设施安全预警防控关键技术开发与应用(2019C03114) （2019C03114）
