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蜂窝夹芯板的缺陷严重地制约和影响了其在航空航天领域的应用.介绍了电子剪切散斑干涉技术的基本原理,并利用电子剪切散斑干涉技术,用热加载的方式对蜂窝夹芯板进行了无损检测,通过图像处理及对含缺陷材料的3点弯曲实验,验证了电子剪切散斑干涉技术的正确性和适用性.结果表明,蒙皮与蜂窝芯子的脱粘等缺陷是蜂窝夹芯板强度降低的主要原因,该无损检测技术可以快速地对蜂窝夹芯板的质量检测进行评估.
The defects of the honeycomb sandwich panel severely restrict and affect its application in the field of aeronautics and astronautics.The basic principle of the electronic shear speckle interferometry technology is introduced, and the application of the electronic shear speckle interferometry technology to the honeycomb The sandwich panel was tested by non-destructive method and the correctness and applicability of the electronic shear speckle interferometry technology were verified by image processing and 3-point bending test of the material with defects. The results show that the debonding of the skin and honeycomb core Flaw is the main reason for the decrease of the strength of the honeycomb sandwich panel. The nondestructive testing method can quickly evaluate the quality of the honeycomb sandwich panel.