Mini Round-Robin Test on the Split Hopkinson Pressure Bar

It is known that the split Hopkinson pressure bar (SHPB) technique has not been standardized yet. A standardized SHPB technique is necessary to provide guidelines for determining the intrinsic material properties. One possibility to examine the consistency of the SHPB technique is to conduct a mini...

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Bibliographic Details
Published in:Journal of testing and evaluation 2018-03, Vol.46 (2), p.457-468
Main Authors: Kariem, M. A., Ruan, D., Beynon, J. H., Prabowo, D. A.
Format: Article
Language:English
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Summary:It is known that the split Hopkinson pressure bar (SHPB) technique has not been standardized yet. A standardized SHPB technique is necessary to provide guidelines for determining the intrinsic material properties. One possibility to examine the consistency of the SHPB technique is to conduct a mini round-robin test. This paper examines whether consistent results can be achieved from three sets of SHPBs by conducting numerical simulations and physical tests on two metals: commercial copper and 6060-T5 aluminum. Both numerical simulation and physical tests employed three sets of SHPBs, namely, 12.7-mm-diameter SHPB made from the AISI 4140 steel, 13-mm-diameter SHPB made from the high-strength steel (HSS), and 14.5-mm-diameter SHPB made from maraging steel 350 (AISI 18Ni). The current study shows that consistent flow stresses (with an acceptable flow stress fluctuation of ±2.2 %) were obtained from these three sets of SHPBs, which indicates the possibility of SHPB standardization in the future.
ISSN:0090-3973
1945-7553
DOI:10.1520/JTE20160054