摘要
介绍了高聚物粘结炸药平面应变断裂韧度 K1c的测试方法 ,对三种高聚物粘结炸药 JOB- 90 0 3、JO- 915 9、JB- 90 14在常温下的K1c值进行了测试。测试结果分别为 :0 .2 4± 0 .0 1MPa·m1/ 2、0 .17± 0 .0 1MPa· m1/ 2、0 .37± 0 .0 1MPa·m1/ 2 ,显示出 JB- 90 14具有相对较强的抗裂纹扩展能力。文章同时讨论了三种高聚物粘结炸药 K1c值与其常规力学性能如拉伸应力应变曲线、蠕变曲线测试结果的一致性 ,还从材料组成的角度 ,分析揭示了 JB- 90 14具有较大 K1c值的主要原因在于 JB- 90 14所用粘结剂为 F2
The testing method of the plane strain fracture toughness K 1c of high polymer bonded explosives is introduced. The method has been used to test three high polymer bonded explosives JOB 9003, JO 9159, and JB 9014, and their K 1c values are 0.24±0.01MPa·m 1/2 、0.17±0.01MPa·m 1/2 、0.37±0.01MPa·m 1/2 separately. The result shows that JB 9014 has better ability to resist flaw expanding. The paper also discusses the agreement between the K 1c values of the three explosives and their conventional mechanical properties such as tensile strength, elongation, elastic modules, and creep fracture lifetime. Furthermore, concerning the composition, the paper reveals the main reason why JB 9014 has bigger K 1c value is F2314 in JB 9014 as bonder.
出处
《火炸药学报》
CAS
CSCD
2001年第2期16-18,21,共4页
Chinese Journal of Explosives & Propellants
