RTM碳纤维复合材料宏观缺陷超声表征及分析

发布时间：2018-04-30 04:07

本文选题：RTM + 宏观缺陷　；参考：《玻璃钢/复合材料》2017年04期

【摘要】：以RTM碳纤维复合材料为研究对象,通过超声特征扫描成像系统对大量试样进行检测,由理论可知,超声波的反射特性会随着宏观缺陷类型的不同而不同。首先从理论上分析各缺陷的反射特性,然后找出不同的宏观自然缺陷,归纳总结各种缺陷对应的图像特点,再采取破坏方法对试样进行切割、打磨,通过显微镜观察不同缺陷形貌特征。结果表明,超声特征扫描成像系统可以检测并分辨出不同的宏观缺陷,通过观察缺陷金相图可知不同类型缺陷形貌特征也各不相同,为RTM碳纤维复合材料宏观缺陷检测及形貌研究提供了一种可行方案。
[Abstract]:Taking RTM carbon fiber composites as the research object, a large number of samples were tested by ultrasonic characteristic scanning imaging system. According to the theory, the reflection characteristics of ultrasonic wave will be different with the different types of macroscopic defects. Firstly, the reflection characteristics of each defect are analyzed theoretically, then different macroscopic natural defects are found, the corresponding image characteristics of various defects are summarized, and then the sample is cut and polished by the method of destruction. The morphologies of different defects were observed by microscope. The results show that the ultrasonic characteristic scanning imaging system can detect and distinguish different macroscopic defects, and the morphologies of different types of defects are different from each other by observing the metallographic images of the defects. It provides a feasible scheme for macroscopic defect detection and morphology study of RTM carbon fiber composites.
【作者单位】：南昌航空大学无损检测技术教育部重点实验室;江西洪都航空工业股份有限公司;
【基金】：国防科工局技术基础科研项目(Z202014T001)
【分类号】：TB332

【相似文献】