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Effect of Different Energy Frames on the Impact Velocity of Strain Energy Frame Impact Machine

에너지 프레임 종류에 따른 변형에너지 프레임 충격시험장치의 충격속도

  • PARK, Seung Hun (Department of Civil and Environmental Engineering, Sejong University) ;
  • PARK, Jun Kil (Department of Civil and Environmental Engineering, Sejong University) ;
  • TRAN, Tuan Kiet (Department of Civil and Environmental Engineering, Sejong University) ;
  • KIM, Dong Joo (Department of Civil and Environmental Engineering, Sejong University)
  • Received : 2014.11.11
  • Accepted : 2015.03.16
  • Published : 2015.08.30

Abstract

This research investigated the effects of diameter and material of energy frame on the impact velocity or strain rate of Strain Energy Frame Impact Machine (SEFIM). The impact speed of SEFIM have been clearly affected by changing the diameter and material of the energy frame. The reduced diameter of the energy frame clearly increased the impact velocity owing to the higher strain at the moment of coupler breakage. And, titanium alloy energy frame produced the fastest speed of impact among three materials including steel, aluminum and titanium alloys because titanium alloy has faster wave velocity than steel. But, aluminium energy frame was broken during impact tests. In addition, the tensile stress versus strain response of high performance fiber reinforced cementitious composites at higher and wider strain rates between 10 and 72 /sec was successfully obtained by using four different energy frames.

Acknowledgement

Supported by : 국토교통부

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