文献类型：期刊文献

英文题名：Optimal configuration strategies for multiple active infrared thermography in defect detection of silicone rubber-epoxy bonded composite materials

作者：Tu, Yanxin[1];Cao, Bin[1];Jiang, Zhuojun[1];Liu, Lishuai[2];Mei, Hongwei[1];Wang, Liming[1]

机构：[1]Tsinghua Univ, Shenzhen Int Grad Sch, Shenzhen 518055, Peoples R China;[2]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai Key Lab Intelligent Sensing & Detect Tech, Shanghai 200237, Peoples R China

年份：2025

卷号：245

外文期刊名：MEASUREMENT

收录：;EI(收录号：20250117635216);WOS:【SCI-EXPANDED(收录号:WOS:001411295300001)】；

基金：This work was supported by the National Natural Science Foundation of China (grant no. 51977117 and 51977118) and Shenzhen Stabilization Support Program (WDZC20231127162130002) .

语种：英文

外文关键词：Multiple active infrared thermography; Feature excitation; Composite materials; Frequency modulation; Thermal wave frequency

摘要：Active infrared thermography (AIT) demonstrates significant potential in detecting internal defects in silicone rubber-epoxy bonded composite materials. However, there remains a notable gap in establishing optimal configurations for primary multiple AIT parameters (waveform, frequency, and excitation time) and thermal wave features when detecting interfacial defects. This study conducts a comprehensive comparative analysis of these parameters and features, to determine the optimal multiple AIT configuration strategies. Initially, a thermal response model and various feature extraction algorithms were developed. Subsequently, the effects of modulation frequency and excitation time on feature thermograms were analyzed. Following that, a comparative study on the imaging effects of linear and logarithmic frequency modulation signals across different frequency bands was conducted. Lastly, a theoretical analysis of the optimal modulation methods among different thermal excitation modulations was performed. It was found that single-frequency sinusoidal modulation at 0.01 Hz has the best detection performance for silicone rubber-epoxy bonded composite materials where the silicone rubber is 3 mm thick. The findings provide valuable insights into the optimal configuration of primary AIT parameters and features, offering significant practical implications for real-world detection applications.