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本文应用光学显微镜,采用反射光明视场照明技术以及几种增强图象衬度提高分辨率的特殊显微技术——暗视场照明法、偏振光法、微差干涉显微术等,通过镜下观察摄取的彩色图象与黑白图象,能清晰地看到玻璃纤维增强塑料在受力过程中出现的树脂-纤维界面脱离、基体裂纹以及纤维断裂,从而进一步剖析了声发射监测所不能判明的细观破坏的类型及位置。同时,借助扫描电镜验证,两者所得结果相符。
In this paper, the use of optical microscopy, the use of bright field of view of reflected light illumination technology and enhance the resolution of the image to enhance the resolution of several special microscopy - dark field illumination method, polarization method, differential interference microscopy, through the mirror Under the observed color images and black and white images, can clearly see the glass fiber reinforced plastic in the process of stress-induced resin-fiber interface detachment, matrix cracks and fiber breakage, thus further analysis of acoustic emission monitoring can not be identified The type and location of meso-damage. At the same time, with the help of SEM, the results of the two are in good agreement.