Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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The Effect of the Reinforced Particles on the Mechanical and Fracture Behaviors of the SiC/Al2O3/Vinyl-Ester Composites

SiC/Al2O3/Vinyl-Ester 복합재료의 강화재 입자가 기계적 특성 및 파괴거동에 미치는 영향

  • Kim, Da Jin Sol (National Disaster Management Research Institute) ;
  • Yun, Yu Seong (Department of Safety Engineering, Pukyong National University) ;
  • Kwon, Oh Heon (Department of Safety Engineering, Pukyong National University)
  • Received : 2017.01.31
  • Accepted : 2017.06.13
  • Published : 2017.06.30
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Abstract

Particle reinforced composites are materials that have enhanced physical properties by adding particle reinforcements to polymer materials and have been applied to a wide range of fields such as the aerospace, bio-technology and automative industry. In this study, particle reinforced composites were prepared by mixing $SiC/Al_2O_3$ to the vinyl ester as the thermoset resin. The purpose of this study is to evaluate mechanical properties and fracture behavior by the tensile test and single edge notch specimen according to the addition ratio of reinforcement. Addition of 1 and 2 wt% of the particle reinforcement to the vinyl-ester resin was effective for the strength improvement. However, when it was more than 3 wt%, its strength was decreased. Also the highest elastic modulus obtained as 3.19 GPa was found at the 2 wt% addition of reinforcement. Futhermore the fracture toughness was evaluated by the energy release rate and the maximum critical energy release rate was obtained when 1 wt% reinforcement. The results show that the limit of adding of $SiC/Al_2O_3$ for improvement of the mechanical and fracture performance is 2 wt% reinforcement particles.

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