静力试验中C/SiC构件集成式热结构的声发射特性及与材料测试的对比
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摘要
在对C/SiC复合材料常温拉伸试验的损伤表征和声发射演化特性进行简要分析的基础上,针对构件集成式设计带来的复杂性特点,对某C/SiC热结构在常温静力试验中的声发射特性进行了分析。给出了试验中声发射特征参数的分类特点。根据试验加载中声发射信号规律,给出了结构的损伤演化模式。通过与材料级声发射信号的对比,判断了试验加载与热结构极限破坏载荷之间的裕度。由此将声发射测试从材料级别的研究延伸到大型C/SiC热结构。
Based on the simply analysis of damage mechanism for C/SiC composites and its performance evolution of acoustic emission(AE)during tensile test at room temperature,an analytical research on the AE characterization for one C/SiC thermal structure during static strength experiment at room temperature has been conducted,aimed at the complex characteristics caused by the component assembly design for it.The sort characters of AE parameter were given.The damage evolution patterns were given according to the AE regulation during experimental loading.By the comparison with AE parameter of C/SiC composites,the remaining value was judged between experimental loading to the ultimate damage loading for the thermal structure.So,the AE measure was extended to large C/SiC thermal structure from the research at material level.
Based on the simply analysis of damage mechanism for C/SiC composites and its performance evolution of acoustic emission(AE)during tensile test at room temperature,an analytical research on the AE characterization for one C/SiC thermal structure during static strength experiment at room temperature has been conducted,aimed at the complex characteristics caused by the component assembly design for it.The sort characters of AE parameter were given.The damage evolution patterns were given according to the AE regulation during experimental loading.By the comparison with AE parameter of C/SiC composites,the remaining value was judged between experimental loading to the ultimate damage loading for the thermal structure.So,the AE measure was extended to large C/SiC thermal structure from the research at material level.
引文
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[2]杜善义.先进复合材料与航空航天[J].复合材料学报,2007,24(1):1-11.DU Shanyi.Advanced composite materials and aerospace engineering[J].Acta Materiae Compositae Sinica,2007,24(1):1-11(in Chinese).
[3]张立同,成来飞,徐永东.新型碳化硅陶瓷基复合材料研究进展[J].航空制造技术,2003(1):24-32.ZHANG Litong,CHENG Laifei,XU Yongdong.Progress in research work of new CMC-SiC[J].Aeronautical Manufacturing Technology,2003(1):24-32(in Chinese).
[4]马恒儒,陶春虎,郑鹏.声发射检测[M].北京:机械工业出版社,2004.MA Hengru,TAO Chunhu,ZHENG Peng.Acoustic emission monitoring[M].Beijing:China Machine Press,2004(in Chinese).
[5]沈功田.声发射检测技术及应用[M].北京:科学出版社,2015.SHEN Gongtian.Acoustic emission technology and application[M].Beijing:China Seience Press,2015(in Chinese).
[6]ALLEN D,METS M,LOREY D,et al.Nondestructive evaluation techniques for ceramic matrix composites[J].Ceramic Engineering and Science Proceedings,1998,193:631-638.
[7]MORSCHER G N.Modal acoustic emission of damage accumulation in a woven SiC/SiC composite[J].Composites Science and Technology,1999,59(5):687-697.
[8]YOTTE S,QUENISSETET J M.Toughness characterization of damageable ceramic matrix composites[J].Compos Part A:Applied Science and Manufacturing,1999,30:191-201.
[9]方鹏.C/SiC复合材料损伤在线声发射监测与表征[D].西安:西北工业大学,2008.FANG Peng.On-line acoustic emission monitoring and charecteristics on damage of C/SiC[D].Xi’an:Northwestern Polytechnical University,2008(in Chinese).
[10]潘文革.声发射技术在编织C/SIC复合材料损伤检测中的应用[D].西安:西北工业大学,2003.PAN Wen’ge.Application of acoustic emission technique in damage inspection of braided C/SIC composite[D].Xi’an:Northwestern Polytechnical University,2003(in Chinese).
[11]童小燕,张佳丽,姚磊江,等.2D-C/SiC拉伸损伤的声发射信号聚类分析[J].固体力学学报,2014,35(2):109-114.TONG Xiaoyan,ZHANG Jiali,YAO Leijiang,et al.Cluster analysis of acoustic emission signals of 2D-C/SiC under tensile loading[J].Chinese Journal of Solid Mechanics,2014,35(2):109-114(in Chinese).
[12]张佳丽.基于声发射的C/SIC复合材料损伤机制研究[D].西安:西北工业大学,2014.ZHANG Jiali.Study on C/SiC composites damage mechanism based on acoustic emission[D].Xi’an:Northwestern Polytechnical University,2014(in Chinese).
[13]GIORDANO M,CALABROA A,Anacoustic emission characterization of the failure modes in polymer-composite materials[J].Composites Science and Technology,1998,58:1923-1928.
[14]MOMON S,GODIN N.Unsupervised and supervised classification of AE data collected during fatigue test on CMC at high temperature[J].Composites,2012,43:254-260.
[15]FANG Peng,CHENG Laifei,ZHANG Litong,et al.Monotonic tensile behaviors analysis of three-dimensional needlepunched woven C/SiC composites by acoustic emission[J].Journal of University of Science and Technology Beijing,2008,15(3):302-306.
[16]刘砚涛,顾海贝,王鸿博,等.纤维缠绕壳体加载过程中声发射特征研究[J].强度与环境,2016,43(4):36-40.LIU Yantao.GU Haibei.WANG Hongbo,et al.Research on acoustic emission characteristics of filament-wound case during loading process[J].Structure&Environment Engineering,2016,43(4):36-40(in Chinese).
[17]顾海贝,葛鹏,刘砚涛.使用声发射判别C/C复合材料结构损伤程度的新方法[J].导弹与航天运载技术,2014(6):71-74.GU Haibei,GE Peng,LIU Yantao.A New method to evaluate the damage extent of C/C composite material structure using acoustic emission technology[J].Missiles and Space Vehicles,2014(6):71-74(in Chinese).
[18]谭志勇,闵昌万,占续军,等.复合材料结构高温力热试验时的声发射测试技术研究[J].强度与环境,2015,42(5):59-63.TAN Zhiyong,MIN Changwan,ZHAN Xujun,et al.The application research of acoustic emission technique on hightemperature strength-thermal coupling experiment for composite structure[J].Structure&Environment Engineering,2015,42(5):59-63(in Chinese).
[19]CHAWLA K K.Ceramic matrix composite,Second edition[M].USA:Kluwer Academic Pulisher,2003.
[20]沈观临,胡更开.复合材料力学[M].北京:清华大学出版社,2006.SHEN Guanlin,HU Gengkai.Mechanics of composite materials[M].Beijing:Tsinghua University Press,2006(in Chinese).