Journal of Power System Engineering (동력기계공학회지)

The Korean Society for Power System Engineering (한국동력기계공학회)
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Design of Repetitive Impact Tester and Mechanical Properties of Plastic Due to Cyclic Impacts

반복 충격장치 설계 및 반복충격에 의한 플라스틱 재료특성 연구

  • Lee, Joon-Hyun (school of Mechanical Engineering, Pusan National University) ;
  • Lee, Sang-Pill (Department of Mechanical Engineering, Dongeui University) ;
  • Lee, Jin-Kyung (Department of Mechanical Engineering, Dongeui University)
  • Received : 2017.05.15
  • Accepted : 2017.10.17
  • Published : 2017.10.31
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Abstract

Many household appliances, including vacuum cleaners, are being subjected to various of impact damages, and made of plastic. However, researches on the damage of appliances materials by repetitive impacts have been rarely conducted. the mechanical stress exerted upon impact-modified polycarbonate (PC) has a great influence not only on the quality of the product but also on the life span. The purpose of this research was to quantify the effects of repetitive impact on the polycarbonate. Second, it was to design the repetitive impact tester for controlling the impact energy. The mechanical properties of tensile strength, yielding stress and strain on the specimens subjected to cyclic impacts were discussed. Tensile strength was sharply declined at the beginning of the impact cycles, while the strain gradually decreased during impact cycles.

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References

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