Thermal Non-Destructive Testing and Evaluation (TNDT&E) plays a crucial role in industrial quality control and structural health monitoring of a variety of materials. Among various TNDT&E modalities, active Infrared Thermography (IRT) has emerged as an extremely promising approach and has gained enormous significance due to its quick, whole field, non-contact and quantitative defect detection capabilities. Pulse Compression favourable Thermal Wave Imaging (PCTWI) especially Frequency Modulated Thermal Wave Imaging (FMTWI) has become popular among a number of active IRT techniques because of increment in defect detection sensitivity as well as test resolution. The present work attempts to explore the applicability of differential filtering post processing scheme for pulse compression favourable FMTWI for enhanced detection contrast, resolution and Probability of Detection (PoD). The proposed scheme has been applied on a Glass Fibre Reinforced Polymer (GFRP) sample with su...

中文翻译：

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利用差分滤波进行脉冲压缩有利频率调制热波成像检测玻璃纤维增​​强聚合物的缺陷检测可能性的研究

热非破坏性测试和评估（TNDT＆E）在各种材料的工业质量控制和结构健康监测中发挥着至关重要的作用。在各种TNDT＆E模式中，主动红外热成像（IRT）已成为一种极有前途的方法，并且由于其快速，完整的领域，非接触式和定量的缺陷检测功能而具有巨大的意义。脉冲压缩有利的热波成像（PCTWI），尤其是调频热波成像（FMTWI）由于缺陷检测灵敏度和测试分辨率的提高而在许多有源IRT技术中变得很流行。目前的工作试图探索差分滤波后处理方案对脉冲压缩有利的FMTWI以增强检测对比度的适用性，分辨率和检测概率（PoD）。拟议的方案已应用到玻璃纤维增​​强聚合物（GFRP）样品中