A Study on the Fatigue Crack Propagation Behavior of Spot Welds under Tensile-shear Load

인장-전단 하중을 받는 점용접부의 피로균열 전파거동에 관한 연구

  • Published : 1997.12.01

Abstract

Spot welding has been used in the sheet metal jointing processes because of its high productivity and convenience. In this study, effects of welding conditions on the fatigue life and prediction methods of fatigue life of spot welded joint have been studded . Fatigue life was estimated by stress index parameter considering multiaxial stresses. Fatigue tests were conducted with the tensile-shear specimens using SPCC. Fatigue life of spot welded joint was influenced by welding currents and was predicted exactly with taking into account StageIII.

Keywords

References

  1. 박사학위논문, 경북대학교 이종 점용접재의 피로거동에 관한 실험적 연구 강성수
  2. ASTM STP 761 Fatigue Life Predicition for SPot Weld using Neuber's Oh, H. L.
  3. SAE Paper 860435 A Comparison of the Resistance Spot Weldability of Hot-Dip and Electrogalvanized Sheet Steels Natale, T. B.
  4. 대한용접학회지 v.12 no.3 고장력강판 및 2층아연도금된 고장력강판의 점용접성에 관한 연구 신현일;강성수
  5. SAE Paper 880373 A J-Integral Apporoach to Fatigue Resistance of a Tensile-Shear Spot Weld Wang, P. C.;Ewign, K. M.
  6. SAE Paper 860606 Empirical Formula for fatigue Strength of Single-Spot-Welded Jing Specimens under Tensile-shear Repeated Load Abe, H.;Katakoka, S.;Satoh, T.
  7. SAE Paper 850371 Fatigue Strength of Single Spot-Welded Joints of Rephosphorized High-Strength and Low-Carbon Steel sheets Kitagawa, H.;Satoh, T.;Fujimoto, M.
  8. SAE Paper 880375 An Evaluation of Fatigue Strength for Various Kinds of Spot-Welded Test Specimens Mizui, M.;Sekine, T.;Tsujimura, A.;Takishima, T.;Shimazaki, Y.
  9. Int. Journal of Fracture v.11 Fracture Mechanics Analysis of the Fatigue Behavior of Spot Welds Pook, L. P.
  10. Journal of Engineering for Industry A Theory for the Effect of Mean Strss on Fatigue of Matals under Combined Torsion and Axial Loading ofr Bending Findley, W. N.
  11. Fracture Control Program Report No. 157 A Fatigue Design Parameter for Spot Welds Swellam, M. H.;Lawrence, F. V.
  12. SAE Paper 920668 Multiaxial fatigue Criteria for Spot Welds Kurath, P.
  13. The Sress Analysis of Cracks Handbook Tada, H.;Paris, P.;Irwin, G.
  14. Elementary engineering Fracture Mechanics(Flurth Edition) Broek, D.
  15. Ph.D Thesis A Fatigue Design Parameter for Spot Welds Swellam, M. H.