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首页> 外文期刊>Infrared physics and technology >Nondestructive inspection of curved clad composites with subsurface defects by combination active thermography and three-dimensional (3D) structural optical imaging
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Nondestructive inspection of curved clad composites with subsurface defects by combination active thermography and three-dimensional (3D) structural optical imaging

机译：通过组合主动热成像和三维（3D）结构光学成像与地下缺陷的弯曲包装复合材料的无损检查

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摘要

In this paper, a combination active thermography and three-dimensional (3D) structural optical imaging is reported on the nondestructive inspection of curved clad composites with subsurface defects. Artificial points are marked on the background of test objective and helpful to obtain the mapping matrix from two-dimensional (2D) thermal wave characteristic imaging data to 3D spatial coordinate's digital model. The 3D digital model is transformed into a new coordinate system and then reprojected onto the thermal-wave feature image exactly. The fusion of 2D thermal-wave characteristic data and the 3D digital model is achieved by bilinear interpolation. Specimens of carbon fiber reinforced polymer (CFRP) skin-honeycomb sandwich (CFRP-SHS) and High silicon oxygen phenolic resin (HSOPR) sheet with artificial defects are prepared for the experimental investigation. Experimental results indicate that the proposed method can reliably inspect the defects and accurately locate defect positions on the curved surface of CFRP-SHS and HSOPR laminate test sample, and it has a significantly potential for the use of aerospace and aircraft manufacturing and application.
机译：在本文中，报告了组合有源热成像和三维（3D）结构光学成像对具有地下缺陷的弯曲包装复合材料的非破坏性检查。人工点标记在测试目标的背景上，并有助于从二维（2D）热波特征成像数据到3D空间坐标的数字模型获得映射矩阵。 3D数字模型被转换为新的坐标系，然后精确地重新恢复热波特征图像。双线性插值实现了2D热波特性数据和3D数字模型的融合。为实验研究制备了碳纤维增强聚合物（CFRP）皮肤 - 蜂窝状夹层（CFRP-SHS）和具有人工缺陷的高硅氧酚酚醛树脂（Hspr）片材。实验结果表明，所提出的方法可以可靠地检查缺陷并准确地定位CFRP-SHS和Hsopp-SHS和Hsopp层压化测试样品的曲面上的缺陷位置，并且它具有使用航空航天和飞机制造和应用的显着潜力。

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