Journal of Mechanical Science and Technology

The Korean Society of Mechanical Engineers (대한기계학회)
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A Study on Fatigue Crack Propagation Mechanism of GFRP in Synthetic Sea Water

  • Kim, Yon-Jig (Faculty of Mechanical Engineering Automobile Hi-Technology Research Institute Chonbuk National University) ;
  • Lim, Jae-Kyoo (Faculty of Mechanical Engineering Automobile Hi-Technology Research Institute Chonbuk National University)
  • Published : 2001.10.01
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Abstract

This paper evaluates the fatigue fracture behavior of a chopped strand glass mat/polyester composite both in ai, and sea water, Bending fatigue (R=-1) was performed on dry and wet specimens, that is respectively in air and sea water. Where the pH concentration of sea water was controlled to 6.0,8.2, 10.0 and the wet specimens were immersed in the sea waters for 4 months. Throughout the tests, fatigue cracks both in the dry and wet specimens, tested in the air or sea water, occurred at the beginning of the cycle, followed by either of two regions one decreasing and the other increasing as the crack growth rate increases.

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References

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