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Depth-resolved measurement of the compression displacement fields on the front and rear surfaces of an epoxy sample

机译:环氧样品前后表面上的压缩位移场的深度分辨测量

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Compression is one of the typical parameters measured in material mechanics. In this research, the compression displacement fields on the front and rear surfaces of an epoxy sample are measured by using a tilt depth-resolved wavenumber-scanning Michelson interferometer. The light source is a distributed feedback laser diode, the wavenumber of which can be modulated to about 1.017 x 10(4) m(-1) by the temperature without mode hopping. A random-sampling Fourier transform is designed to evaluate the phase differences before and after the applied loads. Experimental results show that the depth-resolved measurement of the compression displacement field is of high accuracy. It can be used to analyze force propagation inside resin-based composites.
机译:压缩是在材料力学中测量的典型参数之一。 在该研究中,通过使用倾斜深度分辨的波数扫描迈克尔逊干涉仪测量环氧树脂样品的前表面和后表面上的压缩位移场。 光源是分布式反馈激光二极管,其波数可以通过无模式跳跃的温度调制至约1.017×10(4)m(-1)。 随机采样傅里叶变换旨在评估施加的负载前后的相位差。 实验结果表明,压缩位移场的深度分辨测量具有高精度。 它可用于分析基于树脂基复合材料的力传播。

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