Acoustic Emission Characteristics of Damage of Glass Fiber Reinforced Plastic
-
摘要: 对纤维铺设方向为0°，90°，±45°的玻璃钢试件进行拉伸和弯曲过程中的声发射在线监测试验。结果表明：纤维铺层角度是决定玻璃钢力学特性和损伤规律的主要因素，拉伸、弯曲力与幅度灰色关联度均可达0.861以上，可依据信号的幅值等参数判断试件的不同损伤阶段；试件损伤产生的4种典型声发射信号在波形及频谱上存在明显差别。Abstract: The acoustic emission(AE) on-line monitoring tests of glass fiber reinforced plastic (FRP) specimens with fiber orientation of 0°, 90° and ±45° were carried out during tensile and bending mechanical damage. The results show that the fiber ply angle is the main factor for determing the mechanical properties and damage rules of FRP. The degree of grey relation between tensile force or bending force and amplitude can reach over 0.861. The signal amplitude and other parameters are used to judge the different damage stages of the specimen. There are obvious differences in waveform and spectrum between four typical AE signals produced by specimen damage.
-
Keywords:
- FRP /
- acoustic emission /
- grey correlation degree /
- frequency spectrum /
- damage
-
-
[1] 陈余岳,张锦南.玻璃钢/复合材料风力机叶片的开发[J].风力发电技术,2007(4):371-374. [2] 凌悦菲.玻璃钢技术在化工行业的应用[J].轻工科技,2017(11):22-23. [3] 马波,陈健飞,李标,等.玻璃纤维复合材料板声发射信号传播特性[J].无损检测,2017,39(1),16-23. [4] 赵美英.复合材料结构力学与结构设计[M].西安:西北工业大学出版社,2007. [5] 沙民,周祝林.复合材料力学性能测试手段和方法[J].复合材料学报,2013,23(4):19-38. [6] 李湘渝,李峰,秦岭,等.玻璃钢结构的力学性能实验[J].江苏科技大学学报(自然科学版),2011,25(1):8-11. [7] 李伟,王骁,蒋鹏,等.T700碳纤维复合材料层合板面内剪切过程的声发射特性[J].无损检测,2017,39(9),19-23. [8] MECHRAOUI S E, LAKSIMI A, BENMEDAKHENE S. Reliability of damage mechanism localisation by acoustic emission on glass/epoxy composite material plate[J]. Composite Structures, 2012, 94(5):1483-1494.
[9] 丁蕾.FRP复合材料损伤的声发射特性研究[D].大庆:东北石油大学,2010. [10] 纪洪广,张天森,张志勇,等.无损检测中常用声发射参数的分析与评价[J].无损检测,2001,23(7):289-291. [11] CHANG K C, YEH M F.Grey relational analysis based approach for data clustering[J]. IEE Proc.Vis.Image Signal Process, 2005,152(2):165-172.
[12] 孙玉刚.灰色关联分析及其应用的研究[D].南京:南京航空航天大学,2007. [13] 马晓丽,刘衍聪,李成凯,等.含乘性噪声的声发射信号降噪方法研究[J].工矿自动化,2014,40(10):22-24. [14] 刘军,陈光曦.声发射信号小波阈值消噪方法研究[J].沈阳理工大学学报,2015,34(2):13-15. [15] 戴光,朱磊,赵俊茹,等. 防喷器材料在拉伸过程中的声发射信号特性[J].无损检测,2012,34(9),16-18.
计量
- 文章访问数: 0
- HTML全文浏览量: 0
- PDF下载量: 0
下载:
