A New Technique for Conducting Split Hopkinson Tensile Bar Test at Elevated Temperatures

作者：Tan, X.; Guo, W.^*; Gao, X.^*; Liu, K.; Wang, J.; Zhou, P.

来源：Experimental Techniques, 2017, 41(2): 191-201.

DOI：10.1007/s40799-017-0167-4

• Split Hopkinson tensile bar
• Specimen-bar joining method
• Cold contact time
• Simulation
• Quick Hook Joint

In this paper, a new experimental technique is developed for conducting split Hopkinson tensile bar (SHTB) test at elevated temperatures, which includes a Quick Hook Joint to join the specimen and the loading bars and a system to heat, transmit and mount the specimen. The effectiveness of the Quick Hook Joint is demonstrated through numerical simulation. The cold contact time (CCT) experienced by the specimen is measured by laser sensors and the two cold contact processes are numerically simulated. The simulation results suggest no evident temperature decrease in the specimen gage section and no significant temperature increase in the loading bars due to thermal diffusion. Finally SHTB tests of a 45# steel are conducted at various temperatures to provide validations and to demonstrate the feasibility of the developed experimental apparatus and testing method.

• 出版日期2017-4
• 单位西北工业大学