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首页> 外文期刊>NDT & E international >Improved impact damage characterisation in CFRP samples using the fusion of optical lock-in thermography and optical square-pulse shearography images
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Improved impact damage characterisation in CFRP samples using the fusion of optical lock-in thermography and optical square-pulse shearography images

机译：融合了光学锁定热成像和光学方波剪切成像技术，改进了CFRP样品的冲击损伤表征

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摘要

Image fusion methods with optical lock-in thermography (OLT) and optical square-pulse shearography (OSS) images are proposed to characterise impact damages in carbon fibre reinforced plastic (CFRP) plates. The samples were damaged with low-energy impacts and inspected using OLT, OSS and the reference ultrasound (US) time-of-flight C-scans. A total of 1113 combinations of decomposition, preprocessing, segmentation and fusion tools were proposed and compared with OLT, US and OSS results using the equivalent diameter criterion and the Matthews' correlation coefficient. The results indicated a reduction of 72.21% in the equivalent diameter measurement error and a metric enhancement of 8.05% when using the fusion, showing that one of the developed image fusion methods can successfully perform improved impact damage inspections.
机译：提出了利用光学锁定热成像（OLT）和光学方波剪切成像（OSS）图像的图像融合方法来表征碳纤维增强塑料（CFRP）板的冲击损伤。样品受到低能量冲击的破坏，并使用OLT，OSS和参考超声（US）飞行时间C扫描进行了检查。提出了总共1113种分解，预处理，分割和融合工具组合，并使用等效直径标准和Matthews相关系数与OLT，US和OSS结果进行了比较。结果表明，当使用融合时，等效直径测量误差减少了72.21％，度量增强了8.05％，表明开发的一种图像融合方法可以成功地执行改进的冲击损伤检查。

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