激光超声检测碳纤维增强树脂基复合材料的缺陷评估技术研究
Evaluation of Defects in Carbon Fiber-Reinforced Composites by Laser Ultrasonic Technique
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。
复合材料
缺陷识别
Laser ultrasonic testing
Composites
Discrimination of defects
Abstract
Laser ultrasonic technique has been applied to nondestructive evaluation of defects in carbon fiber-reinforced 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.
中图分类号 TG115.28
所属栏目 试验研究
基金项目 国家自然科学基金项目资助(60572099)
收稿日期 2006/2/22
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备注刘松平(1962-)，男，博士，研究员，主要从事材料的无损检测与评估技术研究。
引用该论文: LIU Song-ping,GUO En-ming,LIU Fei-fei,LI Le-gang,DU Li-ting. Evaluation of Defects in Carbon Fiber-Reinforced Composites by Laser Ultrasonic Technique[J]. Nondestructive Testing, 2007, 29(7): 396～398
刘松平,郭恩明,刘菲菲,李乐刚,杜丽婷. 激光超声检测碳纤维增强树脂基复合材料的缺陷评估技术研究[J]. 无损检测, 2007, 29(7): 396～398
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参考文献
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【2】Robert F Anastasi, Adam D Friedman, Mark K Hinders, et al. NDE of damage in thick stiched composites using laser-based ultrasound with optical fibers for remote generation and detection［J］. Materials Evaluation,1998,56(12):1402 - 1406.
【3】Scruby C B, Dewburst R J, Hutchins D A, et al. Laser Generation of Ultrasound in Metals, in Research Techniques in Nondestructive Testing［M］. New York: Academic Press,1982:281-327.
【4】Tam A C. Pulsed laser generation of ultrashort acoustic pulses: application for thin film ultrasonic measurements［J］. Applied Physics Letters,1984,45(5):510.
【5】Cielo P F. Nadeau, Lamontgne M. Laser generation of convergent acoustic waves for materials inspection［J］. Ultrasonics,1985,23(2):55-62.
【6】Hutchins D, Hu J, Lundgren K. A comparison of laser and EMAT techniques for noncontact ultrasonics［J］. Materials Evaluation,1986,44(10):1244-1253.
【2】Robert F Anastasi, Adam D Friedman, Mark K Hinders, et al. NDE of damage in thick stiched composites using laser-based ultrasound with optical fibers for remote generation and detection［J］. Materials Evaluation,1998,56(12):1402 - 1406.
【3】Scruby C B, Dewburst R J, Hutchins D A, et al. Laser Generation of Ultrasound in Metals, in Research Techniques in Nondestructive Testing［M］. New York: Academic Press,1982:281-327.
【4】Tam A C. Pulsed laser generation of ultrashort acoustic pulses: application for thin film ultrasonic measurements［J］. Applied Physics Letters,1984,45(5):510.
【5】Cielo P F. Nadeau, Lamontgne M. Laser generation of convergent acoustic waves for materials inspection［J］. Ultrasonics,1985,23(2):55-62.
【6】Hutchins D, Hu J, Lundgren K. A comparison of laser and EMAT techniques for noncontact ultrasonics［J］. Materials Evaluation,1986,44(10):1244-1253.
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