In this paper, it is aimed to identify flaws in glass fiber reinforced polymer composites by smart skin graphene nano platelet (GNP) spray coating in infrared thermography technique. The initial resistance of GNP was made to 1 kΩ. Characterization of sensor and beam was done with scanning electron microscopy and computed tomography (CT) respectively. The thermo-elastic behaviour was evaluated in uniaxial test. The surface temperature was studied with IR camera and it was observed that the surface coated GNP sensor upon a damage and without the damage specimen retains heat than without coating the sensor. Hereafter testing with 0.1 mm/min, 0.5 mm/min and 1 mm/min, it was found that without damage specimen, the temperature increased to 112.5%, 13.3% and 40% respectively. And temperature increased to 93.2%, 36.7% and 76.4% in the specimen with the damage. Specimen were also tested for spectrum fatigue cyclic load at 0.1 Hz and 1 Hz. Failure peak of laminates has been analyzed with optical microscopy and CT which was correlated with temperature rise. For 0.1 Hz spectrum loading, the specimen with the damage, with and without GNP coated, temperature rose to 2040% after first laminate failure. Similarly, for 0.1 Hz specimen temperature rose to 15,637.5% in case of without damage specimen, with GNP coated than without GNP coated. And in case of 1 Hz spectrum loading with damage specimen, the temperature rose to 105.73% after GNP coated. Similarly, at 1 Hz loading, the temperature rose to 143.07% in case of without damage specimen after GNP coated. GNP skin coated nano-sensor helps in early detection of temperature signals.

在本文中，旨在通过红外热成像技术通过智能皮肤石墨烯纳米片（GNP）喷涂来识别玻璃纤维增​​强聚合物复合材料中的缺陷。GNP 的初始电阻为 1 k Ω. 分别使用扫描电子显微镜和计算机断层扫描 (CT) 对传感器和光束进行表征。在单轴试验中评估热弹性行为。用红外相机研究表面温度，观察到表面涂覆的 GNP 传感器在损坏和没有损坏的情况下比没有涂覆传感器的样品保持热量。此后以0.1 mm/min、0.5 mm/min和1 mm/min的速度进行测试，发现在没有损坏试样的情况下，温度分别上升到112.5%、13.3%和40%。并且损伤试样的温度分别升高到93.2%、36.7%和76.4%。还测试了样本在 0.1 Hz 和 1 Hz 下的频谱疲劳循环载荷。用光学显微镜和与温升相关的 CT 分析了层压板的失效峰值。对于 0。1 Hz 频谱加载，有损伤的试样，有和没有 GNP 涂层，在第一次层压板失效后温度上升到 2040%。类似地，对于 0.1 Hz 的样品，在没有损坏样品的情况下，GNP 涂层比没有 GNP 涂层的样品温度上升到 15,637.5%。并且在1Hz谱加载的情况下，损伤试样在GNP涂层后温度上升到105.73%。同样，在 1 Hz 负载下，在 GNP 涂层后试样无损伤的情况下，温度上升至 143.07%。GNP 皮肤涂层纳米传感器有助于早期检测温度信号。并且在1Hz谱加载的情况下，损伤试样在GNP涂层后温度上升到105.73%。同样，在 1 Hz 负载下，在 GNP 涂层后试样没有损坏的情况下，温度上升到 143.07%。GNP 皮肤涂层纳米传感器有助于早期检测温度信号。并且在1Hz谱加载的情况下，损伤试样在GNP涂层后温度上升到105.73%。同样，在 1 Hz 负载下，在 GNP 涂层后试样无损伤的情况下，温度上升至 143.07%。GNP 皮肤涂层纳米传感器有助于早期检测温度信号。