HTPB推进剂温度冲击环境下损伤特性的声发射试验
The Acoustic Emission Testing of Damage Properties of HTPB Solid Propellant Under Temperature Shock
摘 要
为研究HTPB推进剂在温度冲击环境条件下的损伤情况，采用单轴定速拉伸声发射(AE)试验，对不同温度冲击周期试验后的HTPB推进剂的损伤特性进行了研究。结果表明：温度冲击后的HTPB推进剂单轴拉伸存在损伤成核、扩展和汇合断裂三个失效阶段；随温度冲击周期的增加，HTPB推进剂释放出的AE累积能量减少，说明在其内部会出现一定损伤,且损伤程度与温度冲击时间呈正相关性；温度冲击时间越长，损伤门槛值提前，越容易出现初始损伤。
温度冲击
声发射
损伤
Composite solid propellant
Temperature shock
Acoustic emission
Damage
Abstract
The effects of temperature shock on the damage properties of HTPB composite solid propellant were studied by temperature shock experiments, acoustic emission(AE) and uniaxial tension tests. The results showed that the HTPB propellant shocked by thermal heat for different cycles all existed three failure phases including the damage nucleation, crack expansions and macro crack. The longer the time of the propellant was shocked, the less the AE cumulative energy was released and the more significant the inner damage was caused. The longer the time of the HTPB propellant being shocked, the earlier the damage threshold would appear.
中图分类号 TG115.28
所属栏目 试验研究
基金项目
收稿日期 2010/3/4
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备注刘承武(1982-)，男，博士研究生，研究方向为固体火箭发动机失效物理与可靠性。
引用该论文: LIU Cheng-Wu,YANG Jian-Hong,DENG Kai,CHEN Fei,ZHANG Hui. The Acoustic Emission Testing of Damage Properties of HTPB Solid Propellant Under Temperature Shock[J]. Nondestructive Testing, 2011, 33(1): 47～49
刘承武,阳建红,邓凯,陈飞,张晖. HTPB推进剂温度冲击环境下损伤特性的声发射试验[J]. 无损检测, 2011, 33(1): 47～49
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参考文献
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【2】Muhammad Mazhar Iqbal, Wang Liang. Modeling the moisture effects of solid ingredients on composite propellant properties［J］. Aerospace Science and Technology,2006,10(8):695-699.
【3】何耀东，刘建全.环境湿度对HTPB推进剂力学性能的影响［J］.固体火箭技术,1996,19(3):47-52.
【4】Svob G J, Bills K W. A predictive surveillance technique for air-launched motors［C］. AIAA/SAE/ASME 18th Joint Propulsion Conference, AIAA82-1097.
【5】Ide K M， Ho S Y，Williams D R G. Fracture behavior of accelerated aged solid rocket propellants［J］. Journal of Materials Science,1999,34(17):4209-4218.
【6】阳建红，李学东，赵光辉，等.HTPB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):37-40.
【7】Liu C T. Cumulative damage and crack growth in solid propellant［J］. AD-323684,1996.
【8】田德余，洪伟良，刘剑洪，等.丁羟固体推进剂力学性能模拟计算［J］.推进技术,2008,29(1):114-118.
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