쇼트피닝 가공에 의한 자동차용 Drive Plate의 내구성 향상

A Study on the Improvement of the Durability of Drive Plate in Automobiles by Shot Peening

  • 정성균 (서울산업대학교 기계공학과) ;
  • 이국진 (서울산업대 산업대학원) ;
  • 이동선 (서울산업대 산업대학원) ;
  • 이재헌 (서울산업대학교 에너지대학원)
  • 발행 : 2005.05.01

초록

The effects of shot peening on the fatigue strength of SK-5M steel is investigated by experiment. The shot peening process is investigated optimum peening condition by changing impeller speed and exposure time. Bending fatigue test is accomplished to investigate the effect of optimum peening condition on the fatigue characteristics. As exposure time is increased, fatigue life in high stress is increased in early stage, become the maximum from 60 to 100 seconds, and then is decreased. Observing fracture surface through SEM after fatigue test, we can see clear configuration of cracks and peening layer.

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