基于光学传声器的非接触超声无损检测技术
Non-contact ultrasonic testing technology based on optical microphone
摘 要
介绍了一种基于光学传声器的新型非接触超声检测技术与应用,该光学传声器基于声场对光折射率的影响来进行声电能量转换,替代了传统声学传感器通过感应振动来完成声电能量转换的方式,具有极佳的带宽和灵敏度。通过对汽车点焊结构及蜂窝夹芯复合材料的检测,验证了该技术的可靠性和优势。
光学传声器
折射率
ultrasonic testing
optical microphone
refractive index
Abstract
This paper introduces a new non-contact ultrasonic testing technology and its application based on optical microphone. The optical microphone is based on the effect of the acoustic field on the light refractive index to carry out the acoustoelectric energy conversion, which replaces the traditional acoustic sensor to complete acoustoelectric energy conversion by inducting vibration, and thus makes the optical microphone has excellent bandwidth and sensitivity. The reliability and advantages of the technology are verified by testing applications in automotive structure spot welding and honeycomb sandwich composites.
中图分类号 TG115.28 DOI 10.11973/wsjc202203002
所属栏目 试验与研究
基金项目
收稿日期 2021/7/15
修改稿日期
网络出版日期
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备注帅家盛(1970-),男,硕士,主要从事无损检测新技术、新方法研究及应用与咨询服务工作
引用该论文: SHUAI Jiasheng,YIN Xiaofang,CAO Yuling. Non-contact ultrasonic testing technology based on optical microphone[J]. Nondestructive Testing, 2022, 44(3): 6～11
帅家盛,殷晓芳,曹玉玲. 基于光学传声器的非接触超声无损检测技术[J]. 无损检测, 2022, 44(3): 6～11
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参考文献
【1】RUS J,GUSTSCHIN A,MOOSHOFER H,et al.Qualitative comparison of non-destructive methods for inspection of carbon fiber-reinforced polymer laminates[J].Journal of Composite Materials,2020,54(27):4325-4337.
【2】FISCHER B.Optical microphone hears ultrasound[J].Nature Photonics,2016,10(6):356-358.
【2】FISCHER B.Optical microphone hears ultrasound[J].Nature Photonics,2016,10(6):356-358.
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