Journal of the Korean Society of Manufacturing Technology Engineers (한국생산제조학회지)

The Korean Society of Manufacturing Technology Engineers (한국생산제조학회)
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Dynamic Characteristics of CFRP Structure Member According to Change the Stacking Angle and Shape

적층각 및 형상 변화에 따른 CFRP 구조부재의 동적 특성

  • Yeo, In-Goo (Department of Advanced Parts and Material Engineering, Graduate School, Chosun Univ.) ;
  • Choi, Ju-Ho (Department of Advanced Parts and Material Engineering, Graduate School, Chosun Univ.) ;
  • Yang, In-Young (Department of Mechanical Design Engineering, Chosun Univ.)
  • Received : 2013.03.07
  • Accepted : 2013.04.17
  • Published : 2013.06.15
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Abstract

Carbon fiber reinforced plastic (CFRP) has many desirable qualities, including being lightweight and very strong. These characteristics have led to its use in applications ranging from small consumer products to vehicles. Circular and square CFRP members were fabricated using 8ply unidirectional prepreg sheets stacked at different angles ($[+15^{\circ}/-15^{\circ}]_4$, $[+45^{\circ}/-45^{\circ}]_4$ and $[90]_8$, where $0^{\circ}$ coincides with the axis of the member). Based on the collapse characteristics of a CFRP circular member, the collapse characteristics and energy absorption capability were analyzed. Impact collapse tests were carried out for each section member. In this study, the impact energies at crossheads speeds of 5.52 m/s, 5.14 m/s and 4.57 m/s were 611.52 J, 529.2 J and 419.44 J (circular member) 2.16 m/s, 1.85 m/s and 1.67 m/s are 372.4 J, 274.4 J and 223.44 J (square member). The purpose is to experimentally examine the absorption behavior and evaluation the strength in relation to changes in the stacking configuration when the CFRP circular members with different stacking configurations were exposed to various impact velocities. In addition, the dynamic characteristics were considered.

Keywords

References

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