声发射检测在复合固体推进剂断裂实验中的应用
The Application of AE in the Fracture Experiment of Composite Solid Propellant
摘 要
以固体推进剂的断裂过程为研究对象，利用先进的声发射试验系统，研究了复合固体推进剂在断裂时的声发射事件特性，揭示了材料断裂韧性和声发射特性间的关系。试验结果表明，材料在裂纹失稳扩展时爆发出强烈的声发射信号。
固体推进剂
裂纹
Acoustic emission testing
Solid propellant
Crack
Abstract
The correlation between acoustic emission testing characteristics and composite solid propellant fracture toughness was investigated, based on the study of cracking process of the propellant by using advanced acoustic emission experiment system and smooth tensile specimens with prefabricated cracks. Experimental results showed that the specimens emitted strong signals when unstable crack extension started.
中图分类号 TG115.28
所属栏目 试验研究
基金项目
收稿日期 2007/4/18
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引用该论文: LIU Chao-feng,YANG Jian-hong. The Application of AE in the Fracture Experiment of Composite Solid Propellant[J]. Nondestructive Testing, 2007, 29(10): 596～598
刘朝丰,阳建红. 声发射检测在复合固体推进剂断裂实验中的应用[J]. 无损检测, 2007, 29(10): 596～598
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参考文献
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【6】Tada H. The Stress Analysis of Cracks Handbook[M]. UK: Professional Engineering Publishers,1973
【2】Martinson R H, Hartor J J, Knollman G C. On the damage field near crack tips in a filled polymer[J]. Expermental Mechanics,1982,22(9):329-335.
【3】Liu C T. On the evalution of damage fields near crack tips in a composite soild propellant[C]. AIAA,88.
【4】Liu C T. Investigation of the effect of predamage on the crack growth behavior in particulate composite material[C]. 1993,AIAA-93一1521-CP.
【5】阳建红，王芳文，覃世勇.HTPB复合固体推进剂的声发射特性及损伤模型的实验和理论研究[J].固体火箭技术,2000,23(3):37-400.
【6】Tada H. The Stress Analysis of Cracks Handbook[M]. UK: Professional Engineering Publishers,1973
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