Dynamic Characterization of Compliant Materials Using an All Polymeric Split Hopkinson Bar

Sawas, O.; Brar, N. S.

doi:10.4271/981138

Cited by 3 publications

(2 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…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%

See 1 more Smart Citation

The Effect of Temperature Gradients on Elastic Wave Propagation in Split Hopkinson Pressure Bars

Walley

2020

J. dynamic behavior mater.

View full text Add to dashboard Cite

If it is desired to obtain high rate mechanical data of materials at non-ambient temperatures using the split Hopkinson (Kolsky) bar technique, it is necessary either to consider what effect a temperature gradient has on the propagation of elastic waves along a metallic rod or to design a mechanism that minimises the exposure of the Hopkinson bars to heating or cooling. Two main mechanical systems have been devised: the first where the bars are brought into contact with the specimen a short time (less than one second) before the specimen is dynamically loaded; the second where the specimen is moved into position just before it is dynamically loaded. As these mechanisms are complex to design and build, many researchers choose the simpler option of heating (or cooling) the ends of the bars as well as the specimen. This review summarises issues that should be considered if this option is taken.

show abstract

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%

The Effect of Temperature Gradients on Elastic Wave Propagation in Split Hopkinson Pressure Bars

Walley

2020

J. dynamic behavior mater.

View full text Add to dashboard Cite

show abstract

Experimental Investigation of Plasticized Polyvinylchloride using the Split Hopkinson Pressure Bar Technique

Przybylo¹,

Arruda²,

Chou³

2000

SAE Technical Paper Series

View full text Add to dashboard Cite