SAE Technical Paper Series 1998
DOI: 10.4271/981138
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Dynamic Characterization of Compliant Materials Using an All Polymeric Split Hopkinson Bar

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Cited by 3 publications
(2 citation statements)
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“…As can be seen from this figure, temperature has a significant effect even for a metallic alloy such as Inconel 718 whose elastic properties are a weak function of temperature (the decrease in modulus of about 40 GPa for a temperature rise of 600 K corresponds to a change in impedance of about 10%). The problem is much worse for Hopkinson bars made from viscoelastic polymeric materials [13][14][15] as their mechanical properties depend on both frequency and temperature [16][17][18][19]. Polymers have an additional problem for high temperature testing as even the most heat-resistant ones cannot be used above a few hundred degrees Celsius due to them melting and decomposing.…”
Section: Firstmentioning
confidence: 99%
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“…As can be seen from this figure, temperature has a significant effect even for a metallic alloy such as Inconel 718 whose elastic properties are a weak function of temperature (the decrease in modulus of about 40 GPa for a temperature rise of 600 K corresponds to a change in impedance of about 10%). The problem is much worse for Hopkinson bars made from viscoelastic polymeric materials [13][14][15] as their mechanical properties depend on both frequency and temperature [16][17][18][19]. Polymers have an additional problem for high temperature testing as even the most heat-resistant ones cannot be used above a few hundred degrees Celsius due to them melting and decomposing.…”
Section: Firstmentioning
confidence: 99%
“…I have performed an empirical check on whether stress pulses really do propagate from the input to the output bar through both a negative and a positive temperature gradient without significant distortion (see Figs. 13,14). The bars were 12.7 mm in diameter and 0.5 m long.…”
Section: Empirical Checkmentioning
confidence: 99%