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首页> 外文期刊>Composite Structures >An improved method of eddy current pulsed thermography to detect subsurface defects in glass fiber reinforced polymer composites
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An improved method of eddy current pulsed thermography to detect subsurface defects in glass fiber reinforced polymer composites

机译：一种改进的涡流脉冲热成像方法，以检测玻璃纤维增​​强聚合物复合材料的地下缺陷

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摘要

Due to its induction heating mechanisms, eddy current pulsed thermography (ECPT) is always used as Nondestructive testing (NDT) technique only for conducive materials. This work explores the feasibility of ECPT to detect subsurface defects in glass fiber-reinforced polymer (GFRP) composites, a typical non-conducive material. The proposed method introduces a metal part as the heat-generating component to generate the induction heat. Then the induction heat in the metal part can be transferred to GFRP, which makes it possible to detect subsurface defects in GFRP. The detection mechanism of the proposed method is firstly investigated, and the influence factor analysis is then performed to obtain the optimal test condition. Experiments were finally performed on GFRP specimens with various subsurface defects to verify the effectiveness of the method. The results demonstrate that the proposed method is effective in subsurface defects detection of GFRP, which provides a promising way to extend the application of ECPT to non-conducive materials.
机译：由于其感应加热机构，涡流脉冲热成像（ECPT）始终用作仅针对有利材料的非破坏性测试（NDT）技术。这项工作探讨了ECPT以检测玻璃纤维增​​强聚合物（GFRP）复合材料的地下缺陷，典型的非有利材料的可行性。该方法将金属部件引入发热组件以产生感应热量。然后可以将金属部件中的感应热传递到GFRP，这使得可以检测GFRP中的地下缺陷。首先研究了所提出的方法的检测机制，然后进行影响因子分析以获得最佳测试条件。最后对GFRP标本进行实验，具有各种地下缺陷来验证该方法的有效性。结果表明，该方法在GFRP的地下缺陷检测中是有效的，这提供了扩展ECPT在非有利材料中的应用的有希望的方法。

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