Comparative study on mechanical properties of CR340/CFRP composites through three point bending test by using theoretical and experimental methods

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Abstract

In this study, Cold Rolled 340 (CR340)/Carbon Fiber Reinforced Plastic (CFRP) composites were fabricated, and experiments and simulation were performed to compare their flexural properties from three-point bending tests. The mechanical properties of CR340 and CFRP were input by dividing the material regime into elastic, plastic, and fracture regions in order to improve the simulation reliability. A forming limit diagram was determined through a stretch test for the CR340 steel plate and used as data input in the simulation. For CFRP, simulation was carried out using the Hashin damage theory and damage evolution obtained from references. Results showed that the maximum bending stress, fracture displacement, and gradient in the experiments closely matched those obtained from the simulation.

Keywords

Simulation Three-Point bending test Hashin damage Forming limit diagram Carbon fiber reinforced plastic (CFRP) 
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Copyright information

© Korean Society for Precision Engineering 2016

Authors and Affiliations

  • Min Sik Lee
    • 1
  • Hyung Yoon Seo
    • 2
  • Chung Gil Kang
    • 3
  1. 1.Department of Mechanical EngineeringPusan National UniversityBusanSouth Korea
  2. 2.Department of Electrical and Computer EngineeringPusan National UniversityBusanSouth Korea
  3. 3.School of Mechanical EngineeringPusan National UniversityBusanSouth Korea

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