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。
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.
出处
《无损检测》
北大核心
2007年第10期596-598,共3页
Nondestructive Testing
关键词
声发射检测
固体推进剂
裂纹
Acoustic emission testing
Solid propellant
Crack
