摘要
采用激光超声检测技术,研究了碳纤维增强树脂基复合材料中常见缺陷的激光超声信号特征与缺陷识别评估方法。结果表明,利用L波的特征和变化,可有效地提取反映复合材料中缺陷的声波信息;根据L波的幅值和衰减变化规律,可进行缺陷的判别,确定缺陷的性质。
Laser ultrasonic technique has been applied to nondestructive evaluation of defects in carbon fiberreinforced composites （CFRCs）. The results presented in this paper have shown that the ultrasonic signal characterization associated with the defects in CFRCs can be extracted from longitudinal （L） wave The amplitude and attenuation of L wave can be used to discriminate and evaluate defects.
出处
《无损检测》
北大核心
2007年第7期396-398,401,共4页
Nondestructive Testing
基金
国家自然科学基金项目资助(60572099)
关键词
激光超声检测
复合材料
缺陷识别
Laser ultrasonic testing
Composites
Discrimination of defects
