Abstract
The torsional split Hopkinson bar is used for testing materials at strain rates above 104s−1. This strain rate, which is an order of magnitude higher than is typical with this technique, is obtained by using very short specimens. Strain rates of 6.4×104s−1 have been achieved with specimens having a gage length of 0.1524 mm. Results from tests on 1100 aluminum show an increase in rate sensitivity as the strain rate increases.
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References
Kolsky, H., “An Investigation of the Mechanical Properties of Materials at Very High Rates of Loading,”Proc. Phys. Soc.,62-B,676–700 (1949).
Clifton, R.J. andKlopp, R.W., “Pressure-shear Plate Impact Testing,”ASM Metal Handbook,8,9th ed.,American Society of Metals,Materials Park, OH,230–238 (1985).
Hartley, K.A., Duffy, J., andHawley, R.H., “The Torsional Kolsky (Split-Hopkinson) Bar,”ASM Metal Handbook,8,9th ed.,American Society of Metals,Materials Park, OH,218–228 (1985).
Gilat, A. andKrishna, K., “The Effects of Strain Rate and Thickness on the Response of Thin Layers of Solder Loaded in Pure Shear,”ASME J. Electronic Packag.,119,81–84 (1997).
Gilat, A. andWu, X., “Plastic Deformation of 1020 Steel over a Wide Range of Strain Rates and Temperatures,”Int. J. Plasticity,13,611–632 (1997).
Frantz, R.A. andDuffy, J., “The Dynamic Stress-strain Behavior in Torsion of 1100-O Aluminum Subjected to a Sharp Increase in Strain Rate,”J. Appl. Mech.,39,939–945 (1972).
Senseny, P.E., Duffy, J., andHawley, R.H., “Experiments on Strain Rate History and Temperature Effects during the Plastic Deformation of Close-packed Metals,”J. Appl. Mech.,45,60–66 (1978).
Khan, A.K. andHuang, S., “Experimental and Theoretical Study of Mechanical Behavior of 1100 Aluminum in the Strain Rate Range 10 −5–104s−1,”Int. J. Plasticity,8,397–424 (1992).
Leung, E.K.C., “An Elastic-plastic Stress Analysis of the Specimen Used in the Torsional Kolsky Bar,”J. Appl. Mech.,47,278–282 (1980).
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Gilat, A., Cheng, C.S. Torsional split Hopkinson bar tests at strain rates above 104s−1 . Experimental Mechanics 40, 54–59 (2000). https://doi.org/10.1007/BF02327548
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DOI: https://doi.org/10.1007/BF02327548