文献类型：期刊文献

英文题名：DEFECT IMAGING TECHNIQUE FOR ELECTRICAL PORCELAIN BUSHINGS UTILIZING LASER-EXCITED THERMAL DIFFUSION WAVES

作者：Wu, Wangsong[1]; Liu, Lishuai[1,2]

机构：[1] Electric Power Research Institute, China Southern Power Grid Co., Ltd., Guangzhou, 510663, China; [2] Shanghai Key Laboratory of Intelligent Sensing and Detection Technology, School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2024

起止页码：449

外文期刊名：Proceedings of the 2024 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications, SPAWDA 2024

收录：EI(收录号：20251018004502)

语种：英文

外文关键词：Bushings - Infrared transmission - Laser excitation - Laser power transmission - Luminescence - Thermography (imaging)

摘要：This paper introduces a defect detection technique for electrical porcelain bushings utilizing laser-excited thermal diffusion waves. Electrical bushings, crucial in power transmission, are prone to defects due to various factors, posing significant threats. This technology applies controlled thermal excitation to specimens, manifesting internal defects as abnormal surface temperature distributions captured by infrared thermography. The effectiveness of the technique is investigated through ceramic bushing specimens with varying defect sizes and depths. Results demonstrate its capability to detect defects up to 12mm below the surface, with periodic excitation showing superior performance for deeper defects. ? 2024 IEEE.