TY - GEN
T1 - Experimental Study on dynamic tensile properties of polymer bonded explosives
AU - Zhou, Zhongbin
AU - Dai, Kaida
AU - Chen, Jingjing
AU - Liu, Yanlong
AU - Chen, Pengwan
N1 - Publisher Copyright:
© IDS 2014. All Rights Reserved.
PY - 2014
Y1 - 2014
N2 - In this work, we utilize a split Hopkinson pressure bar (SHPB) and the digital image correlation (DIC) technique to measure the dynamic indirect tensile properties of PBXs. Standard Brazilian disk test and flattened Brazilian disc (FBD) test are used to study the dynamic tensile strength, and FBD test and semi-circular bend (SCB) test with a precrack are used to measure the dynamic fracture toughness. The dynamic displacement and strain fields, crack propagation are measured during the dynamic deformation and fracture process. The effect of different pressing conditions, including hot isostatic pressing, hot molding pressing and cold molding pressing, on the tensile properties of PBXs is discussed based on experimental results. The influence of loading rate on the strength and fracture toughness of PBXs is analyzed. The results show that the methods adopted in the experiments effective to measure the dynamic tensile property of PBXs. The dynamic tensile strength and fracture toughness show obvious loading-rate dependence.
AB - In this work, we utilize a split Hopkinson pressure bar (SHPB) and the digital image correlation (DIC) technique to measure the dynamic indirect tensile properties of PBXs. Standard Brazilian disk test and flattened Brazilian disc (FBD) test are used to study the dynamic tensile strength, and FBD test and semi-circular bend (SCB) test with a precrack are used to measure the dynamic fracture toughness. The dynamic displacement and strain fields, crack propagation are measured during the dynamic deformation and fracture process. The effect of different pressing conditions, including hot isostatic pressing, hot molding pressing and cold molding pressing, on the tensile properties of PBXs is discussed based on experimental results. The influence of loading rate on the strength and fracture toughness of PBXs is analyzed. The results show that the methods adopted in the experiments effective to measure the dynamic tensile property of PBXs. The dynamic tensile strength and fracture toughness show obvious loading-rate dependence.
UR - https://www.scopus.com/pages/publications/105038691128
M3 - Conference contribution
AN - SCOPUS:105038691128
T3 - Proceedings - 15th International Detonation Symposium, IDS 2014
SP - 356
EP - 362
BT - Proceedings - 15th International Detonation Symposium, IDS 2014
PB - Johns Hopkins University WSE Energetics Research Group
T2 - 15th International Detonation Symposium, IDS 2014
Y2 - 13 July 2014 through 18 July 2014
ER -