Early damage detection in composites by distributed strain and acoustic event monitoring

被引:14
作者
Chandarana, Neha [1 ]
Martinez-Sanchez, Daniel [1 ]
Soutis, Constantinos [2 ]
Gresil, Matthieu [1 ,2 ]
机构
[1] Univ Manchester, I Composites Lab, Sch Mat, Sackville St, Manchester M1 3NJ, Lancs, England
[2] Univ Manchester, Aerosp Res Inst, Sackville St, Manchester M1 3NJ, Lancs, England
来源
STRUCTURAL HEALTH MONITORING - FROM SENSING TO DIAGNOSIS AND PROGNOSIS | 2017年 / 188卷
基金
英国工程与自然科学研究理事会;
关键词
Acoustic emission; composites; distributed strain; optical fibre; PWAS; structural health monitoring; CARBON-EPOXY COMPOSITES; FAILURE MECHANISMS; EMISSION; SENSORS;
D O I
10.1016/j.proeng.2017.04.515
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
Advances in the development of fibre reinforced polymer composites and their manufacturing techniques have led to their increased use as structural materials. They offer superior corrosion resistance and high specific strength and stiffness, compared to metals, while designing anisotropic structures can provide weight reductions. However, there is uncertainty associated with understanding the consequences of out-of-plane damage in composites. Non-destructive evaluation techniques are adopted in many cases, but represent significant down-time and labour costs. Attached and/or embedded structural health monitoring systems have shown promise in improving the reliability and safety of composites, while reducing lifecycle costs, and improving design and manufacture processes. In this work, a distributed optical fibre sensor is embedded in a six ply carbon fibre-epoxy composite laminate during fabrication, to give three strain sensing regions near the top, middle, and bottom surface of the laminate, which allow in-situ and real time monitoring of strain development in the panel during resin infusion and curing. Four point bending is then conducted on the plate. Acoustic emission events are collected using four bonded piezoelectric wafer active sensors, thus allowing the comparison of strain data with damage formation and growth during progressive loading cycles. Distributed strain data demonstrates the sensitivity of the optical fibre through-the-thickness of the panel. The top, middle, and bottom sensing regions clearly indicate the development of compressive, neutral, and tensile strain, respectively. The strain values obtained from the optical fibre are in good agreement with strain data collected by surface mounted strain gauges. Acoustic event detection suggests the formation of matrix (resin) cracks, with measured damage event amplitudes in agreement with values reported in published literature on the subject. (C) 2016 The Authors. Published by Elsevier Ltd.
引用
收藏
页码:88 / 95
页数:8
相关论文
共 34 条
[1]   ON THE USE OF ACOUSTIC-EMISSION TO INVESTIGATE DAMAGE MECHANISMS IN GLASS-FIBER-REINFORCED POLYPROPYLENE [J].
BARRE, S ;
BENZEGGAGH, ML .
COMPOSITES SCIENCE AND TECHNOLOGY, 1994, 52 (03) :369-376
[2]   Damage evolution and fracture events sequence in various composites by acoustic emission technique [J].
Bussiba, A. ;
Kupiec, M. ;
Ifergane, S. ;
Piat, R. ;
Boehlke, T. .
COMPOSITES SCIENCE AND TECHNOLOGY, 2008, 68 (05) :1144-1155
[3]   Damage mechanisms characterisation of carbon fibre/epoxy composite laminates by both electrical resistance measurements and acoustic emission analysis [J].
Ceysson, O ;
Salvia, M ;
Vincent, L .
SCRIPTA MATERIALIA, 1996, 34 (08) :1273-1280
[4]  
Chen O., 1992, Nondestructive Testing and Evaluation, V8-9, P869, DOI 10.1080/10589759208952759
[5]  
Chiesura G., 2015, JEC MAG, P60
[6]   Real-time frequency determination of acoustic emission for different fracture mechanisms in carbon epoxy composites [J].
deGroot, PJ ;
Wijnen, PAM ;
Janssen, RBF .
COMPOSITES SCIENCE AND TECHNOLOGY, 1995, 55 (04) :405-412
[7]   Integration of the Kohonen's self-organising map and k-means algorithm for the segmentation of the AE data collected during tensile tests on cross-ply composites [J].
Godin, N ;
Huguet, S ;
Gaertner, R .
NDT & E INTERNATIONAL, 2005, 38 (04) :299-309
[8]  
Gong XL, 2000, J COMPOS MATER, V34, P460, DOI 10.1106/A1L9-T03N-B0EA-JRXJ
[9]  
Goren A., 2008, ARCH MAT SCI ENG, V34, P117
[10]  
Gresil M., 2016, MAT IN PRESS