碳纤维编织复合材料损伤变形与破坏实验研究

玻璃钢/复合材料 ›› 2017, Vol. 0 ›› Issue (5): 22-27.

碳纤维编织复合材料损伤变形与破坏实验研究

卢博远¹, 赵静², 韦子辉^1*, 周伟¹

1.河北大学无损检测研究所,保定071002;
2.河北大学综合实验中心,保定071002

收稿日期:2016-12-26 出版日期:2017-05-28 发布日期:2017-05-28
通讯作者: 韦子辉(1977-),男,博士,副教授,主要从事机械测试理论及无损检测技术方面的研究,zihui-wei@163.com。
作者简介:卢博远(1992-),男,硕士研究生,主要从事声学无损检测方面的研究。
基金资助:
国家自然科学基金(11502064);河北省自然科学基金(E2016201019,F2015201215)

EXPERIMENTAL STUDY ON DEFORMATION AND FAILURE OF CARBON FIBER BRAIDED COMPOSITE

LU Bo-yuan¹, ZHAO Jing², WEI Zi-hui^1*, ZHOU Wei¹

1.Non-destructive Testing Laboratory, Hebei University, Baoding 071002, China;
2.Comprehensive Experiment Center of Hebei University, Baoding 071002, China

Received:2016-12-26 Online:2017-05-28 Published:2017-05-28

摘要/Abstract

摘要： 通过对碳纤维编织复合材料的拉伸实验,利用声发射技术(Acoustic Emission,简称“AE”)和数字图像相关(Digital Image Correlation,简称“DIC”)方法研究碳纤维复合材料的损伤演化规律。通过采集试件在拉伸过程中的声发射信号、损伤变形与应变场信息,分析碳纤维编织复合材料的力学加载、变形场和声发射特征参数的关系。结果表明复合材料的位移场、应变场信息以及AE信号特征参数能良好地描述复合材料在拉伸状态下的损伤累积和破坏过程。在加载前期,以40~60 dB低幅度信号为主;随着载荷增加,撞击累计数急剧升高,高幅度、高持续时间信号增多。通过DIC测得的位移场和应变场信息,发现对于相同的载荷增量,加载方向的位移和最大拉应变呈先增加后减小的趋势。

关键词: 碳纤维编织复合材料, 声发射, 数字图像相关, 损伤演化

Abstract: The damage evolution of carbon fiber braided composites was studied by using the acoustic emission (AE) and digital image correlation (DIC) method. The relationship between mechanical loading, deformation and strain field and acoustic emission characteristic parameters of carbon fiber braided composites was analyzed by collecting acoustic emission signals and damage deformation field information during tensile test. The results show that the displacement, strain field and the AE signal characteristic parameters of the composites can describe the damage accumulation and failure process of the composites during tensile test. The tensile process is divided into two stages: damage accumulation stage and damage stage. In the early stage of loading, low amplitude signals with the amplitude from 40 to 60 dB are generated. As the load increases, the number of cumulative hits increases dramatically, and high-amplitude, high-duration-time signal means that a variety of damages occur at the same time in damage stage. In addition, it is found that the displacement and the maximum tensile strain increase and then decrease in the same load increment measured by DIC.

Key words: carbon fiber braided composite, acoustic emission, digital image correlation, damage evolution

中图分类号:

TB332

卢博远, 赵静, 韦子辉, 周伟. 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, 0(5): 22-27.

LU Bo-yuan, ZHAO Jing, WEI Zi-hui, ZHOU Wei. EXPERIMENTAL STUDY ON DEFORMATION AND FAILURE OF CARBON FIBER BRAIDED COMPOSITE[J]. Fiber Reinforced Plastics/Composites, 2017, 0(5): 22-27.

参考文献

[1] Vautard F, Dentzer J, Nardin M, et al. Influence of surface defects on the tensile strength of carbon fibers[J]. Applied Surface Science, 2014, 332:185-193.
[2] Penev E S, Artyukhov V I, Yakobson B I. Basic structural units in carbon fibers: Atomistic models and tensile behavior[J]. Carbon, 2015, 85:72-78.
[3] Babu M R, Prakash T V B. Characterisation of fiber failure mode in T700 carbon fiber reinforced epoxy composites by acoustic emission testing[J]. Russian Journal of Nondestructive Testing, 2014, 50(1): 45-57.
[4] Fernandes H, Ibarra-Castanedo C, Zhang H, et al. Thermographic non-destructive evaluation of carbon fiber-reinforced polymer plates after tensile testing[J]. Journal of Nondestructive Evaluation, 2015, 34(4):34-35.
[5] Shinyama Y, Yamaji T, Hatsukade Y, et al. Nondestructive evaluation of braided carbon fiber composites with artificial defect using HTS-SQUID gradiometer[J]. Physica C, 2011, 471(21): 1242-1245.
[6] Han W Q, Zhou J Y. Acoustic emission characterization methods of damage modes identification on carbon fiber twill weave laminate[J]. Science China Technological Sciences, 2013, 56(9): 2228-2237.
[7] 周伟, 孙诗茹, 冯艳娜, 等. 风电叶片复合材料拉伸损伤破坏声发射行为[J]. 复合材料学报, 2013, 30(2): 240-246.
[8] 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.
[9] 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.
[10] Silversides I, Maslouhi A, LaPlante G. Acoustic emission monitoring of interlaminar delamination onset in carbon fibre composites[J]. Structural Health Monitoring, 2013, 12(2): 126-140.
[11] 王新刚, 阳能军, 龙宪海, 等. T700/环氧复合材料拉伸损伤机理声发射实验研究[J]. 无损探伤, 2011, 35(6): 22-25.
[12] 丁鹏, 卢超, 陈振华, 等. 基于声发射检测的碳布/环氧树脂复合材料压缩损伤评价[J]. 无损检测, 2011, 33 (11):29-32.
[13] Asamene K, Hudson L, Sundaresan M. Influence of attenuation on acoustic emission signals in carbon fiber reinforced polymer panels[J]. Ultrasonics, 2015, 59: 86-93.
[14] Koohbor B, Mallon S, Kidane A, et al. A DIC-based study of in-plane mechanical response and fracture of orthotropic carbon fiber reinforced composite[J]. Composites Part B: Engineering, 2014, 66: 388-399.
[15] 郝文峰, 郭广平, 陈新文, 等. 基于数字图像相关方法的复合材料层间剪切性能研究[J]. 玻璃钢/复合材料, 2016(1): 29-32.
[16] Sawan H A, Walter M E, Marquette B. Unsupervised learning for classification of acoustic emission events from tensile and bending experiments with open-hole carbon fiber composite samples[J]. Composites Science and Technology, 2015, 107: 89 - 97.
[17] Johanson K, Harper L T, Johnson M S, et al. Heterogeneity of discontinuous carbon fibre composites: damage initiation captured by digital image correlation[J]. Composites: Part A, 2015, 68: 304-312.