TY - GEN
T1 - Study on dynamic fracture and mechanical properties of a PBX simulant by using dic and SHPB method
AU - Zhou, Zhongbin
AU - Chen, Pengwan
AU - Huang, Fenglei
PY - 2012
Y1 - 2012
N2 - The deformation and fracture of a PBX simulant were studied in this work. A pre-cracked semi-circular bending sample was loaded using a SHPB. The failure process of the sample was recorded in situ using a high speed camera. Based on the recorded images corresponding to the loading steps, the displacement and strain fields were determined using digital image correlation method. The crack opening displacement was determined. The correlation coefficient distribution was used to predict the initiation and propagation of the crack initiated from the tip of the pre-crack. In addition, the dynamic fracture toughness of the specimen was measured. The K IC values were approximately 1.39 ± 0.02, 1.51 ± 0.01 and 1.87 ± 0.03 MPa·m 1/2 corresponding to strain rates about 382 ± 13, 455 ± 8 and 621 ± 23 s -1, respectively. The fracture toughness results show strong strain rate dependence.
AB - The deformation and fracture of a PBX simulant were studied in this work. A pre-cracked semi-circular bending sample was loaded using a SHPB. The failure process of the sample was recorded in situ using a high speed camera. Based on the recorded images corresponding to the loading steps, the displacement and strain fields were determined using digital image correlation method. The crack opening displacement was determined. The correlation coefficient distribution was used to predict the initiation and propagation of the crack initiated from the tip of the pre-crack. In addition, the dynamic fracture toughness of the specimen was measured. The K IC values were approximately 1.39 ± 0.02, 1.51 ± 0.01 and 1.87 ± 0.03 MPa·m 1/2 corresponding to strain rates about 382 ± 13, 455 ± 8 and 621 ± 23 s -1, respectively. The fracture toughness results show strong strain rate dependence.
KW - PBX simulant
KW - SHPB
KW - digital image correlation
KW - dynamic fracture toughness
KW - semicircular bending test
UR - http://www.scopus.com/inward/record.url?scp=84861982140&partnerID=8YFLogxK
U2 - 10.1063/1.3686366
DO - 10.1063/1.3686366
M3 - Conference contribution
AN - SCOPUS:84861982140
SN - 9780735410060
T3 - AIP Conference Proceedings
SP - 665
EP - 668
BT - Shock Compression of Condensed Matter - 2011 - Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter
T2 - 17th Biennial Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter, 2011 APS SCCM
Y2 - 26 June 2011 through 1 July 2011
ER -