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首页> 外文期刊>Composite Structures >Nondestructive evaluation of hidden multi-delamination in a glass-fiber-reinforced plastic composite using terahertz spectroscopy
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Nondestructive evaluation of hidden multi-delamination in a glass-fiber-reinforced plastic composite using terahertz spectroscopy

机译：太赫兹光谱法无损评估玻璃纤维增​​强塑料复合材料中隐藏的多层结构

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摘要

In this study, a terahertz time-domain spectroscopy (THz-TDS) imaging system was devised to detect hidden multi-delamination in a glass-fiber-reinforced plastic (GFRP) composite laminates. Shapes, thicknesses and locations in the z-direction of each delamination among the overlapped multi-delamination were analyzed considering the interaction between the pulsed THz wave and the GFRP composite. THz wave power and phase were discussed by the analytical calculations and the experimental results with the evaluation of hidden multi-delamination. Then, the THz image results were compared with those of the ultrasound wave inspection method. Finally, hidden multi-delamination in the GFRP composite laminate was successfully detected and imaged using the THz-TDS imaging system, showing that this system can be widely utilized to evaluate the reliability of composite structures as a nondestructive evaluation method. (C) 2015 Elsevier Ltd. All rights reserved.
机译：在这项研究中，设计了太赫兹时域光谱（THz-TDS）成像系统，以检测玻璃纤维增​​强塑料（GFRP）复合层压板中隐藏的多层结构。考虑到脉冲太赫兹波与GFRP复合材料之间的相互作用，对重叠的多层结构中每个分层的z方向的形状，厚度和位置进行了分析。通过解析计算和实验结果讨论了太赫兹波功率和相位，并通过隐式多重分层评估进行了讨论。然后，将THz图像结果与超声波检查方法的图像结果进行比较。最后，使用THz-TDS成像系统成功地检测到了GFRP复合材料层压板中的隐藏多层，并对其进行了成像，表明该系统可以作为一种无损评估方法，广泛用于评估复合结构的可靠性。 （C）2015 Elsevier Ltd.保留所有权利。

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