한국산업융합학회 논문집 (Journal of the Korean Society of Industry Convergence)

한국산업융합학회 (The Korean Society of Industry Convergence)
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반복적인 충격하중을 받은 PC 플라스틱 재료의 변형 및 수명 평가

Deformation and Life Evaluation of PC Plastic Materials Subjected to Repeated Impact Loads

  • 이진경 (동의대학교 기계자동차로봇부품공학부)
  • Lee, Jin-Kyung (Division of Mechanical, Automotive, Robot Component Engineering, Dongeui University)
  • 투고 : 2020.05.25
  • 심사 : 2020.06.29
  • 발행 : 2020.08.31
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초록

Polycarbonate (PC) materials having electrical insulation properties, are thermoplastic material and are easily processed, have excellent strength and heat resistance characteristics, and also have transparent and hard characteristics. In this study, we tried to derive the ε-N curve of strain-life, which shows the relationship between the strain characteristics and the life of the material when repeated impact loads are applied to the PC plastic material. As the impact load increased to 3.0kg, 4.0kg, 5.0kg, and 6.0kg, the strain also increased linearly to 0.033, 0.041, 0.046, and 0.055. At 3.0kg of mass impact, the test piece broke with 12000 impact cycles, 8400 times at 3.5kg, 7400 times at 4.0kg, 6600 times at 4.5kg, 4700 times at 5.0kg, 3000 times at 5.5kg, and 1000 times at 6.0kg. The number of fractures exponentially decreased as the load gradually increased. Using these results, an ε-N curve for PC plastic was derived.

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참고문헌

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