纤维增强复合材料红外热波无损检测热激励方式的选取原则

红外热波无损检测中热激励方式是影响缺陷检测可靠性的主要因素之一。以玻璃纤维增强复合材料缺陷检测为研究对象, 建立纤维增强复合材料热激励方式的选取原则。选取带预埋缺陷的玻璃纤维增强层压板, 采用脉冲闪光灯、沸水水浴、烤箱恒温加热和脉冲超声四种热激励方式, 进行热波检测, 获取并处理试件表面的热激励响应信号红外辐射值。从热图的信噪比、红外辐射值变化曲线和缺陷可检测度三个方面对比分析, 综合考查了四种热激励方式对检测结果的影响, 提出了纤维增强复合材料的热激励源的选取原则。为提高检测可靠性, 热激励源的选取应遵循这一原则。

Abstract

The pattern of thermal excitation is one of the main factors which affect the detection reliability in infrared thermal wave nondestructive testing. The experiment is designed to establish the basic principle for selecting pattern of thermal excitation. In experiment, glass fiber reinforced laminate which embeds artificial defects is a tested object, and four patterns of thermal excitation are organized as follows: pulsed flash lamp, boiling-water bath, oven thermostatic heating, and pulsed ultrasound. The thermal stimulus-response signal which is the intensity of infrared radiation of specimen surface is acquired and processed. The influence of four heating ways on the testing results is analyzed and contrasted from three respects: signal to noise ratio of thermal imaging, curves of infrared radiation intensity, and degree of defect′s detectable, and a basic principle for selecting pattern of thermal excitation for fiber-reinforced composites is gotten. In order to improve the detection reliability, this principle should be followed when selecting thermal excitation pattern.

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赵石彬, 伍耐明, 张存林, 刘文霞, 李晓霞, 李昊, 俞嘉捷. 纤维增强复合材料红外热波无损检测热激励方式的选取原则[J]. 中国激光, 2010, 37(S1): 287. Zhao Shibin, Wu Naiming, Zhang Cunlin, Liu Wenxia, Li Xiaoxia, Li Hao, Yu Jiajie. Select Principle of Thermal Excitation Pattern in Infrared Thermal Wave Nondestructive Testing for Fiber Reinforced Composite[J]. Chinese Journal of Lasers, 2010, 37(S1): 287.

纤维增强复合材料红外热波无损检测热激励方式的选取原则

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