Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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A Correlation Between Crack Growth and Abrasion for Selected Rubber Compounds

  • Lee, Hyunsang (Department of Polymer-Nano Science and Technology, Chonbuk National University, Polymer Materials Fusion Research Center) ;
  • Wang, Wonseok (Department of Polymer-Nano Science and Technology, Chonbuk National University, Polymer Materials Fusion Research Center) ;
  • Shin, Beomsu (Department of Polymer-Nano Science and Technology, Chonbuk National University, Polymer Materials Fusion Research Center) ;
  • Kang, Seong Lak (R&D Center, Kumho Petrochemical) ;
  • Gupta, Kailash Chandra (Polymer Research Laboratory, Department of Chemistry, Indian Institute of Technology) ;
  • Nah, Changwoon (Department of Polymer-Nano Science and Technology, Chonbuk National University, Polymer Materials Fusion Research Center)
  • Received : 2019.09.23
  • Accepted : 2019.10.16
  • Published : 2019.12.31
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Abstract

A typical wear pattern was reported to resemble the fatigue crack growth behavior considering its mechanism, especially for amorphous rubbers such as styrene-butadiene rubber (SBR). In this study, the wear and crack growth rates were correlated using two separate experiments for carbon black and silica-reinforced selected rubber compounds. The wear rate was determined using a blade-type abrasion tester, where the frictional energy input during wearing was measured. The crack propagation rate was determined under different tearing energy inputs using a home-made fatigue tester, with a pure-shear test specimen containing pre-cracks. The rates of abrasion and crack propagation were plotted on a log-log scale as a function of frictional and tearing energies, respectively. Reasonable agreement was observed, indicating that the major mechanism of the abrasion pattern involved repeated crack propagation.

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References

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