Non-destructive testing & evaluation plays a crucial role in various sectors for testing the reliability of materials. Of the different available non-destructive examination techniques, thermal non-destructive testing provides fast and remote inspection of the materials. Among various widely used thermal non-destructive testing techniques, frequency modulated thermal wave imaging gained its importance due to its higher test sensitivity and resolution. The adopted matched filter approach on the obtained temporal temperature distribution further concentrates supplied excitation energy into a narrow duration high peak power pulse. In this paper, the merits of the reconstructed high peak power pulsed data have been considered and emphasized in the context of independent component analysis. The obtained results clearly indicate that pulse compressed data improves defect detectability, reliability, memory usage, and computational complexity.

中文翻译：

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用于低碳钢检查的脉冲压缩频率调制热波成像的独立成分分析

无损检测与评估在测试材料可靠性的各个领域都扮演着至关重要的角色。在各种可用的非破坏性检查技术中，热非破坏性测试可提供对材料的快速和远程检查。在各种广泛使用的热非破坏性测试技术中，频率调制热波成像因其更高的测试灵敏度和分辨率而变得越来越重要。对获得的时间温度分布采用的匹配滤波器方法进一步将提供的激励能量集中到一个窄持续时间的高峰值功率脉冲中。在本文中，已经在独立分量分析的背景下考虑并强调了重建的高峰值功率脉冲数据的优点。