The decomposition kinetics, heats of reaction, evolving thermal conductivity and emissivity, and surface ignition conditions of carbon fiber reinforced polymer (CFRP) composites during laser-induced polymer matrix decomposition were investigated. Woven carbon fiber-epoxy panels of different thicknesses were irradiated with a 1.07-μm, 2-kW ytterbium fiber laser at irradiances of 5–525 W/cm². The changing front and backside surface temperatures were measured using a mid-wave infrared camera, adjusted using measured emissivity of irradiated and un-irradiated CFRP samples. The evolving temperature maps were fit to a 3D, explicit, finite difference, thermal model to estimate Arrhenius kinetic rate parameters, heats of reaction, and thermal conductivity during a two-step epoxy decomposition reaction and a single stage char oxidation reaction. The kinetics is not strongly dependent on heating rates of 20–700 °C/sec and parameters determined at lower laser powers extrapolate well to higher powers. Surface ignition occurs at critical surface temperatures of 1198 ± 50 °C.

研究了碳纤维增强聚合物（CFRP）复合材料在激光诱导的聚合物基体分解过程中的分解动力学，反应热，演化的热导率和发射率以及表面着火条件。用厚度为1.07μm，2 kW的fiber光纤激光辐照5–525 W / cm ²的不同厚度的编织碳纤维环氧树脂板。使用中波红外相机测量变化的前后表面温度，并使用辐照和未辐照的CFRP样品的发射率进行调整。将演化的温度图拟合到3D，显式，有限差，热模型，以估计两步环氧分解反应和单级炭氧化反应期间的Arrhenius动力学速率参数，反应热和导热系数。动力学并不强烈依赖于20–700°C / sec的加热速率，并且在较低激光功率下确定的参数可以很好地推断为较高功率。表面点火发生在1198±50°C的临界表面温度下。