CLUSTER ANALYSIS OF AE SIGNALS DURING DAMAGE PROCESS AND COMPRESSIVEDEFORMATION OF COMPOSITE MATERIALS

Abstract

Abstract: The damage evolution of glassfiber composites was studied by using the acoustic emission (AE) and digital image correlation (DIC) method to monitor the compressive test of glass fiber reinforced composites in real time.The characteristic parameters such as peak amplitude, peak frequency, centroid frequency and RA value of AE signals were selected and analyzed by principal component analysis (PCA) and k-means algorithm. The resultsshow that the AE signals of composite compressive damage process can be divided into three clusters. The ranges of characteristic frequency are 0~60 kHz, 100 kHz~150 kHz and 200 kHz~450 kHz, respectively. And three clusters correspond to the three kinds of damage modes such as matrix creaking, fiber/matrix debonding and fiber breakage. The surface displacement field information reflect the deformation and damage characteristics of the composite specimen. The technology combining AE with DIC is effective for monitoring damage evolution of the composite, which can provide the reference for the health monitoring of composite structure.

Key words: composites, acoustic emission, digital image correlation, cluster analysis

CLC Number:

TB332

ZHAO Wen-zheng, LI Min, ZHANG Yan-nan, ZHOU Wei. CLUSTER ANALYSIS OF AE SIGNALS DURING DAMAGE PROCESS AND COMPRESSIVEDEFORMATION OF COMPOSITE MATERIALS[J]. Fiber Reinforced Plastics/Composites, 2018, 0(6): 5-10.

References

[1] 朱炜垚. 含低速冲击损伤复合材料层板剩余强度及疲劳性能研究[D]. 南京: 南京航空航天大学, 2012.
[2] 赵红霞, 程赫明, 赵磊峰. 考虑二次受力的新型玻璃纤维复合材料(GFRP)加固钢筋混凝土柱的非线性有限元分析[J]. 工程质量, 2008(23): 51-54.
[3] Juhasz Z, Szekrényes A. The effect of delamination on the critical buckling force of composite plates: Experiment and simulation[J]. Composite Structures, 2017(168): 456-464.
[4] 孟超, 彭卫东, 宁小波, 等. 玻璃纤维复合材料损伤过程的声发射特性研究[J]. 玻璃钢/复合材料, 2016(12): 23-27.
[5] 张祥春, 张鹭, 蔡良续, 等. 玻璃纤维复合材料静载荷声发射试验研究[J]. 中国测试, 2011, 37(6): 27-30.
[6] 张鹏林, 李梅, 王汝姣, 等. 风电叶片复合材料在三点弯曲过程中的声发射研究[J]. 工程塑料应用, 2016, 44(4): 21-26.
[7] 栗丽. 基于声发射信号分析的2D及3D纺织结构复合材料损伤机制研究[D]. 上海: 东华大学, 2015.
[8] 赵文政, 张燕南, 雒新宇, 等. 复合材料波纹褶皱区域损伤变形测量及声发射监测[J]. 玻璃钢/复合材料, 2017(8): 53-60.
[9] 陈维业, 胡杰, 刘光辉, 等. 复合材料胶接修补界面损伤演化声发射监测[J]. 玻璃钢/复合材料, 2016(7): 9-13.
[10] 李亚娟, 周伟, 刘然, 等. 复合材料Ⅱ型分层损伤演化声发射监测[J]. 玻璃钢/复合材料, 2015(1): 54-58.
[11] 卢博远, 赵静, 韦子辉, 等. 碳纤维编织复合材料损伤变形与破坏实验研究[J]. 玻璃钢/复合材料, 2017(5): 22-27.
[12] Arthur M, Abderrahim E.M, Zouhaier J, et al. Mechanical behaviour and damage mechanisms analysis of a flax-fiber reinforced composite by acoustic emission[J]. Composites Part A, 2016(90): 100-110.
[13] Cesari F, Dal Re V, Minak G, et al. Damage and residual strength of laminated carbon-epoxy composite circular plates loaded at the centre[J]. Composites Part A, 2007, 38(4): 1163-1173.
[14] Diakhate M, Bastidas-Arteaga E, Schoefs F, et al. Cluster analysis of acoustic emission activity within wood material: Towards a real-time monitoring of crack tip propagation[J]. Engineering Fracture Mechanics, 2017, 180: 254-267.
[15] Li L, Swolfs Y, Straumit I, et al. Cluster analysis of acoustic emission signals for 2D and 3D woven carbon fiber/epoxy composites[J]. Journal of Composite Materials, 2016, 50(14): 1921-1935.
[16] Li L, Lomov SV, Yan X. Cluster analysis of acoustic emission signals for 2D and 3D woven glass/epoxy composites[J]. Composite Structures, 2014, 116: 286-299.
[17] Berthelot J, Rhazi J. Acoustic emission in carbon fibercomposites[J]. Composites Science and Technology, 1990, 37(4): 411-428.