CAJ | 학술논문

采用圆弧压头与差动变压器引伸计相结合的巴西试验方法测试脆性炸药力学性能，并将其与单轴拉伸试验测试结果进行了显著性差异分析。以脆性显著的 HMX基 PBX（ PBX-HMX）为对象，研究了不同压头形式对巴西试验结果影响，试验结果表明当试样半径与圆弧压头半径之比为11．35时，圆弧压头巴西试验的破坏应力和破坏应变与单轴拉伸试验的破坏应力和破坏应变基本相等；采用11．35圆弧压头巴西试验测试了3种脆性熔铸炸药的力学性能，与单轴拉伸试验结果比较分析表明两种方法测试数据比较接近而且变化趋势是一致的，圆弧压头巴西试验可用于脆性炸药拉伸性能的间接定量表征，但显著性差异检验分析表明这两种方法测试结果还是存在一定差异而不能完全等同。
채용원호압두여차동변압기인신계상결합적파서시험방법측시취성작약역학성능，병장기여단축랍신시험측시결과진행료현저성차이분석。이취성현저적 HMX기 PBX（ PBX-HMX）위대상，연구료불동압두형식대파서시험결과영향，시험결과표명당시양반경여원호압두반경지비위11．35시，원호압두파서시험적파배응력화파배응변여단축랍신시험적파배응력화파배응변기본상등；채용11．35원호압두파서시험측시료3충취성용주작약적역학성능，여단축랍신시험결과비교분석표명량충방법측시수거비교접근이차변화추세시일치적，원호압두파서시험가용우취성작약랍신성능적간접정량표정，단현저성차이검험분석표명저량충방법측시결과환시존재일정차이이불능완전등동。
Tensile mechanical properties of HMX based brittle explosives were investigated by Brazilian test with arc compress head and LVDT,and the difference between the results of the Brazilian test and single-axis tensile test was also analyzed by the t check method. For the brittle PBX-HMX,results show that PBX-HMX′s break strength and break strain tested by arc compress head Bra-zilian test are very close to that of the single-axis tensile method when the radius ratio of sample to the arc compress head is 11. 35. Then,mechanical properties of three kinds of casting explosive were obtained at ratio of 11. 35 by arc compress head Brazilian. The mechanical properties of casting explosive tested by two methods show the same trend and are very close too. So the arc compress head Brazilian test can be used to determinate the tensile mechanical properties of PBX. Howere,the t check analysis shows that there are still some differences between the two methods,the arc compress head Brazilian test can not replace tensile method completely .