Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Fatigue Design of Bevel Gear for Automobile by Shot Peening

쇼트피닝에 의한 자동차용 베벨기어의 피로설계

  • Lee, Dong-Sun (The Graduate School, Seoul National University of Technology) ;
  • Cheong, Seong-Kyun (Department of Mechanical Engineering, Seoul National University of Technology)
  • 이동선 (서울산업대학교 산업대학원) ;
  • 정성균 (서울산업대학교 기계공학과)
  • Published : 2008.07.01
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Abstract

The fatigue characteristics of bevel gear used for differential gear of automobile was investigated in this paper. From the A-N(Almen intensity-Number of fracture)curve of bevel gear it was shown that there was a specific time that have a maximum fatigue life. Optimal peening condition was 65m/s of project velocity and 8min of project time. Fatigue life was also investigated from the S-N curve between optimal peened specimen and unpeened specimen. Another very significant point is that the crack initiation of bevel gear by shot peening was generated in the subsurface from fractography. This paper shows that shot peening process tremendously improve fatigue characteristics of bevel gear.

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References

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