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Effect of thermal-softening in rod impact test for the determination of dynamic material properties of polycarbonate

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A theory was developed to investigate the effect of thermal-softening in rod impact test for the determination of the dynamic material properties of Polycarbonate, on the basis of one-dimensional shock wave propagation phenomena. High velocity rod impact test was performed with flat-ended cylindrical rod specimens. From the geometrical measurements of deformed rod, dynamic material properties were determined by both previous theories and the theory suggested in this work. The variation of temperature rise due to adiabatic plastic deformation with impact velocities and the effect of thermal-softening on the dynamic yield stress were analyzed.

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Correspondence to Jeongmin Lee.

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Lee, J., Min, O. Effect of thermal-softening in rod impact test for the determination of dynamic material properties of polycarbonate. KSME Journal 9, 29–40 (1995). https://doi.org/10.1007/BF02954352

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Key Words

  • Rod Impact Test
  • Dynamic Material Properties
  • High-Strain-Rate
  • Thermal-Softening
  • Polycarbonate