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通过雷电模拟,对复合材料层合板试样进行雷击损伤试验。基于热扩散原理,针对不同的雷击试验件,采用波形为长脉冲形式的瞬态热激励方式对雷击损伤进行红外热成像检测,并对不同时刻的检测结果进行分析、比较,对缺陷轮廓进行界定,对结果进行定量测量。检测结果表明,无论是否对碳纤维复合材料表面进行防护,瞬态红外热成像方法均能够有效检测出雷击后的内部分层损伤,可对损伤的严重程度进行有效区分,能够对缺陷尺寸、面积进行准确测量。
By lightning simulation, the composite laminate samples were subjected to lightning damage test. Based on the principle of thermal diffusion, aiming at different lightning test pieces, transient thermal excitation with long pulse waveform was used to detect the lightning damage by infrared thermography. The detection results at different time were analyzed and compared to define the defect contour , The results of quantitative measurement. The test results show that the transient infrared thermal imaging method can effectively detect the inner delamination damage after lightning strikes, regardless of whether the surface of the carbon fiber composite is protected or not, and can effectively distinguish the severity of the damage, and can perform the defect size and area Accurate measurement.