STUDY ON THE METHOD OF MEASURING THE THICKNESS OF COMPOSITE MATERIALS BASED ON ULTRASONIC WAVE

Abstract

Abstract: Because of the small proportion, specific strength and modulus, composite materials have been widely used in aerospace, automotive, chemical, textile, mechanical manufacturing, medical and other fields. The composite products in service, due to the long time of differentiation and corrosion or products in the presence of delamination defects and other reasons, will result in changes in the thickness of the material. For high attenuation composite, this paper puts forward a method to measure the velocity of sound by using the time difference between the ultrasonic wave and the first floor, and then the thickness of the material is obtained. The experimental results show that the thickness of several materials is measured by a bottom wave method, and the error is about ±0.15 mm. It is feasible to use this method to measure the thickness of the composite material with high attenuation. It has great guiding significance for the field thickness measurement of high attenuation composites.

Key words: composite material, beginning wave, thickness, high attenuation

CLC Number:

TB332

LIU Mo, YANG Yu-qing, LU Ming-hui, ZHANG Yi-ping. STUDY ON THE METHOD OF MEASURING THE THICKNESS OF COMPOSITE MATERIALS BASED ON ULTRASONIC WAVE[J]. Fiber Reinforced Plastics/Composites, 2017, 0(1): 97-100.

References

[1] 郑伟峰, 周来水, 谭昌柏, 等. 高性能纤维和树脂发展现状[J]. 西安文理学院学报, 2013, 16(1): 27-31.
[2] 王云, 杨为, 段成财, 等. 具有复合材料层的谐波减速器柔轮的应力分析[J]. 现代制造工程, 2014(6): 6-11.
[3] 孟晨光, 金文 ,李正旭, 等. 用于复合材料的超声测厚传感器设计[J]. 导弹与航天运载技术, 2011(5): 59-62.
[4] 陆铭慧, 李沛芮, 王旭. 复合材料孔隙含量超声多参量评价方法研究[J]. 玻璃钢/复合材料, 2016(3): 55-59.
[5] 矫维成, 王荣国, 刘文博, 等. 纤维缠绕复合材料压力容器封头厚度预测[J]. 复合材料学报, 2010, 27(5): 116-121.
[6] Aziz Onder, Onur Sayman, Tolga Dogan, et al. Burst failure load of composite pressure vessels[J]. Composite Structures, 2009, 89(1): 159-166.
[7] 卢天山. 薄壁玻璃钢防热层内部质量检测技术应用研究[D]. 长沙: 国防科学技术大学, 2009.
[8] 郑晖, 林树青. 超声检测[M]. 北京: 中国劳动社会保障出版社, 2008.
[9] N. I. Brazhnikov. Pulse-echo ultrasonic thickness gauge with a reduced dead zone[J]. Measurement techniques, 1975, 18(12): 1834-1835.
[10] Shuttleworth P, Maupin J, Teitsma A. Gas coupled ultrasonic measurement of pipeline wall thickness[J]. Pressure Vessel Technol, 2005, 127(3): 290-293.
[11] 柯细勇, 王占元, 杨剑锋, 等. 一种新型便携式超声波测厚仪的设计[J]. 传感器与微系统, 2011, 30(12): 119-122.
[12] 林海立. 基于数字信号处理技术的河工模型超声地形仪开发[D]. 北京: 清华大学, 2004.
[13] 李传坤. 数字超声测厚系统设计[D]. 太原: 中北大学, 2015.
[14] 唐伟坤. 超声膜厚测量机制及传感器研究[D]. 南京: 南京航空航天大学, 2011.
[15] 陈亮. 管道超声在线测厚设备的研发与应用[D]. 北京: 北京化工大学, 2015.