Journal of Advanced Marine Engineering and Technology

  • 제21권5호
  • /
  • Pages.512-521
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  • 1997
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  • 2234-7925(pISSN)
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  • 2234-8352(eISSN)
한국마린엔지니어링학회 (The Korean Society of Marine Engineering)
권호 표지

파괴역학을 기초로 한 침탄치차의 굽힘강도에 미치는 쇼트피닝(Shot Peening)의 효과에 관한 연구

The Effect of Shot Peening on the Bending Strength of Carburized Spur Gear Teeth Based on Fracture Mechanics

  • S.K.Lyu (Depart. of Mech, Design and Prod. Engineering, Research Center for Aircraft Parts Tech., Gyeongsang National Univ.)
  • 발행 : 1997.10.01
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초록

This paper deals with an evaluation of the residual stress due to shot peening induced in a car¬burized gear tooth and its application to the fatigue crack propagation problem. The residual stress is estimated based on the assumption that the main cause of residual stress is the volume difference between the case and core due to martensitic transformation in cooling, and the influ¬ence of both the reduction of retained austenite and the strain in the surface layer induced by shot peening are considered. The reliability of the method is examined by comparison with stresses measured by the X-ray diffraction method. The stresses intensity factors are computed by the influence function method and the reduction of the factor due to the residual stress is demonstrat¬ed and discussed based on the fracture mechanics.

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참고문헌

  1. American Gear Manufactures Association, 246.02A Practice for Carburized Aerospace Gearing AGMA Standard
  2. ASME PTG-89 v.2 Fatigue Strength and Crack Growth of carburized and Shot Peened Spur Gears Inoue, K.;Kato, M.;Yamanaka, M.
  3. Bull. JSME v.29 Bending Strength of Carburized SCM420H Spur Gear Teeth Tobe, T.;Kato, M.;Inoue, K.;Takatsu, N.;Morita, I.
  4. Transactions of the Japan Society of Mechanical Engineers v.60, C Estimation of Residual Stress Due to Shot Peening in Carburized Gears and Its Effect on the Stress Intensity Factor Lyu, S. K.;Inoue, K.;Deng, G.;Kato, M.
  5. Propulsion and Power v.10-3 Estimation of Fatigue Strength Enhancement for Carburized and Shot Peened Gears Inoue, K.;Kato, M.
  6. Bulletin of the Japan Society of Mechanical Engineers v.22 An Analysis by Finite Element Techniques of the Effects of a Crack in the Gear Tooth Fillet and Its Applicability to Evaluating Strength of the Flawed Gears Honda, H.;Conway, J. C.
  7. ASME 77-DET-158 On the Use of Strain Energy Density Fracture Criterion in the Design of Gears Using Finite Element method Ahmad, J.;Loo F. T.
  8. Trans. JSME v.55, C Evaluation of the Strength of Carburized Spur Gear Teeth Based on Fracture Mechanics, 1st Report: Stress Intensity Factor Considering the Effect of Residual Stress Distribution on the Case Inoue, K.;Deng, G.;Kato, M.
  9. 1st Int. Conf. on Shot Peening Mechanical Aspects of Residual Stress Development in Shot Peening Al-Hassani, S. T. S.
  10. Test Strip, Holder and Gage for Shot Peening - SAE J442 SAE Standard
  11. Procedures for Using Standard Shot Peening Test Strip - SAE J443 SAE Standard
  12. Cast Shot and Grit for Peening and Cleaning 0 ASE J444 SAE Standard
  13. Proc. 1st Int. Conf. on Short Peening A Practical Approach to Forming and Strengthening of Metallic Components Using Impact Treatment Meguid, S. A.;Duxbury, J. K.
  14. Int. J. Solids Structures v.8 Some Remarks on Elastic Crack-Tip Stress Fields Rice, J. R.
  15. Mechanics of Crack Growth, ASTM STP 590 Residual Life Estimates for Structures with Partial Thickness Cracks Besuner, P.M.