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首页> 外文会议>International Conference on Advanced Nondestructive Evaluation >Measurement of Thermal Expansion Coefficients of Thin Film of Different Organic Coatings by Shearography
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Measurement of Thermal Expansion Coefficients of Thin Film of Different Organic Coatings by Shearography

机译：通过Shearography测量不同有机涂层薄膜的热膨胀系数

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In the present work, thermal expansion coefficients of a number of organic coatings were studied by a non-destructive technique (NDT) known as shearography. An organic coating, i.e., epoxy, on a metallic alloy, i.e., carbon steels, was investigated at a temperature range simulating the severe weather temperatures in Kuwait especially between the daylight and the night time temperatures, 20-60 C. The investigation focused on determining the in-plane displacement of the coating, which amounts to the thermal deformation (strain) with respect to the applied temperature range. Along with the experimental data, a mathematical relationship was derived describing the thermal deformation of a coated film as a function of temperature. Furthermore, results of shearography indicate that the technique is very useful NDT method not only for determining the thermal expansion coefficients of different coatings, but also the technique can be used as a 2D-microscope for monitoring the deformation of the coatings in real-time at a submicroscopic scale.
机译：在目前的工作，一些有机涂层的热膨胀系数被称为剪切散斑一个非破坏性技术（NDT）研究。有机涂层，即，环氧树脂，在金属合金，即，碳钢，在一个温度范围内尤其是模拟日光和夜间温度之间科威特恶劣天气下的调查，20-60℃。调查集中在确定涂层，这相当于热变形（应变）相对于所施加的温度范围内的面内位移。随着实验数据，数学关系被导出描述作为温度的函数的涂膜的热变形。此外，剪切散斑的结果表明，该技术是非常有用的NDT方法不仅用于确定不同涂层的热膨胀系数，而且还可以将该技术用作2D-显微镜在监测实时的涂层的变形亚显微尺度。

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