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Bonded repair issues for composites: An investigation approach based on infrared thermography

机译:复合材料的粘结修复问题:基于红外热成像的研究方法

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摘要

An original approach based on active Infrared Thermography (IT) addresses the very challenging issue of the nondestructive analysis of bonded repaired CFRP laminates. Difficulties come from the weak property contrast between parts of repaired assemblies and thickness of the joint. Strong attention is given here to the control of experimental tests conditions (heat load, boundary conditions), which allows to develop a physically consistent numerical model of the thermal problem. Comparison between measured and simulated surface temperature fields shows very good agreement regarding temporal and spatial evolutions for composites with different lay-up and offers new solutions for the NonDestructive Testing (NDT) of bonded repaired composites.
机译:一种基于主动红外热成像(IT)的原始方法解决了粘合修复CFRP层压板的非破坏性分析这一非常具有挑战性的问题。困难来自维修组件的零件之间的较弱的性能对比和接头的厚度。这里要特别注意对实验测试条件(热负荷,边界条件)的控制,这可以为热问题建立物理上一致的数值模型。测量和模拟的表面温度场之间的比较表明,对于具有不同铺层的复合材料,其在时间和空间上的演变具有很好的一致性,并为粘结修复复合材料的无损检测(NDT)提供了新的解决方案。

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