Journal of Mechanical Science and Technology

The Korean Society of Mechanical Engineers (대한기계학회)
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In-situ Crack Propagation Observation of a Particle Reinforced Polymer Composite Using the Double Cleavage Drilled Compression Specimens

  • Lee Yeon-Soo (Center for Joint Disease, Chonnam National University Hwasun Hospital) ;
  • Yoon Young-Ki (Defense Acquisition Program Administration) ;
  • Jeong Bo-Young (School of Mechanical Systems Engineering, Chonnam National University) ;
  • Yoon Hi-Seak (School of Mechanical Systems Engineering, Chonnam National University)
  • Published : 2006.03.01
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Abstract

In this study, we investigate the feasibility of in-situ crack propagation by using a double cleavage drilled compression (DCDC) specimen showing a slow crack velocity down to 0.03 mm/s under 0.01 mm/s of displacement control. Finite element analysis predicted that the DCDC specimens would show at least 4.3 fold delayed crack initiation time than conventional tensile fracture specimens under a constant loading speed. Using DCDC specimens, we were able to observe the in-situ crack propagation process in a particle reinforced transparent polymer composite. Our results confirmed that the DCDC specimen would be a good candidate for the in-situ observation of the behavior of particle reinforced composites with slow crack velocity, such as the self-healing process of micro-particle reinforced composites.

Keywords

References

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