This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
A Review of the Fatigue Properties of Spot-Welded Sheet Steels
Annotation ability available
Sector:
Language:
English
Abstract
Over the past several years, the automotive industry has used increasing amounts of high-strength sheet steels to reduce vehicle weight for improved fuel economy. It is important that these high strength steels exhibit spot-weld fatigue characteristics at least equal to those of previous lower strength low-carbon steels. This study reviews the spot-weld fatigue performance of uncoated sheet steels with respect to material strength, spot-weld diameter, sheet thickness, and the number and array of spot welds. Models used to describe the state of stress around the spot weld are also reviewed. Selected results contained in the literature are reevaluated using fracture-mechanics concepts. Comments are given regarding fatigue-crack growth in spot welds with respect to the cyclic-stress ratio and threshold-fatigue limit. Limitations of current theories used to evaluate fatigue performance of spot welds are discussed, and an alternative approach to interpreting such data is recommended.
Recommended Content
Citation
Davidson, J., "A Review of the Fatigue Properties of Spot-Welded Sheet Steels," SAE Technical Paper 830033, 1983, https://doi.org/10.4271/830033.Also In
References
- Recommended Practices for Resistance Welding American Welding Society, Inc. AWS Cl.1-66, 1966
- Funk E. R. Welding Journal 1954 33 7 p. 363
- Rivett, R. M. Factors Affecting the Quality of Resistance Spot Welds University of Wales, Dept. of Metallurgy, circa 1980
- “Spot Welding of Light Assemblies in Mild Steel” British Standard 1140 1957
- Kan Yih-Renn “Fatigue Resistance of Spot Welds-an Analytical Study” Metals Engineering November 1976 26 36
- Theocaris P. S. “The Stress Distribution in a Strip Loaded in Tension by Means of a Central Pin,” J. Applied Mech. March 1956 p. 85
- Wilson R. B. Fine T. E. “Fatigue Behavior of Spot Welded High Strength Steel Joints,” 810354 February 1981 Detroit, Mich.
- Aoyama s. Fujimoto M. “Fatigue Strength of Spot Welded Specimens of Cold Rolled Steel Sheets,” J. of the Soc. of Material Science, Japan 24 259 April 1975
- Chandel R. S. Garber S. “Mechanical and Metallurgical Aspects of Spot-Welded Joints in Heat-Treated Low-Carbon Mild Steel Sheet,” Metals Technology September 1974 418424
- Pook L. P. “Approximate Stress Intensity Factors Obtained from Simple Plate Bending Theory,” Engr. Fracture Mechanics 12 1979 505 522
- Pook L. P. “Approximate Stress Intensity Factors for Spot and Similar Welds,” National Engineering Laboratory Report No. 588 Dept. of Industry April 1975
- Paris P. C. Sih G. C. “Stress Analysis of Cracks,” Symp. on Fracture Toughness Testing and its Applications ASTM STP 381 30 83 Philadelphia, Pa. ASTM 1965
- Kassir M. K. Sih G. C. “External Elliptical Crack in Elastic Solid,” Int. J. Fracture Mech. 1968 4 41 347 356
- Barsom J. M. “Fatigue Behavior of Pressure-Vessel Steels,” WRC Bulletin No. 194 May 1974 1 22
- Weiss V. Lal D. N. “A Note on the Threshold Condition for Fatigue Crack Propagation” Metallurgical Transactions August 1974 1946 1949
- Elber W. “The Significance of Fatigue Crack Closure,” Damage Tolerance in Aircraft Structures, ASTM STP 486 1971 230 242
- Forman R. G. Kearney J. E. Engle R. M. “Numerical Analysis of Crack Propagation in Cyclic-Loaded Structures,” Journal of Basic Engineering, Trans. ASME, Series 0 September 1967 459 463
- Hudson C. M. NASA Tech. Note 0-5390 1969
- Overbeeke J. L. Draisma J. “Fatigue Characteristics of Heavy-Duty Spot Welded Lap Joints,” Metal Construction 6 1974 213 219
- Pook L. P. “Fracture Mechanics Analysis of the Fatigue Behavior of Spot Welds,” Int. J. Fracture, 11 1975 173 176
- Fatigue Properties of a Low Carbon Steel and a Low Alloy High Strength Steel After Spot Welding, Inland Steel Report 286.3.2, July 1974
- Pollard B. “Spot Welding Characteristics of HSLA Steel for Automotive Applications,” Welding Journal 53 8 1974 3435 3505
- Cappelli P. G. Castagna M. Ferrero P. “Fatigue Strength of Spot-Welded Joints of HSLA Steels,” Welding of HSLA Structural Steels (Proc. Conf.) Rome, Italy November 1976 ASM 1978 (Met. A, 7905-720127)
- Satoh T. Katayama J. Morii Y. “Fatigue Strength of Multi-Spot Welded Joints,” Presented at the Autumn Meeting of Japan Welding Society 1978 Osaka Institute of Technology, Document No. III 638 80
- Orts D. H. “Fatigue Strength of Spot Welded Joints in HSLA Steel,” 810355 February 1981
- Overbeeke J. L. Draisma J. “Influence of Stress Relieving on Fatigue of Heavy Duty Spot Welded Lap Joints,” Metal Construction 10 9 1978 433 434
- Overbeeke J. L. “Fatigue of Spot Welded Lap Joints,” Metal Construction 8 5 May 1976 212 215