Previous studies have shown that both threshold stress intensity factors and fatigue crack growth rates are dependent on crack size. The average growth rates for very short cracks considerably exceed those given by conventional stress intensity-crack growth laws fitted to long crack data. Elastic and elastic plastic fracture mechanics solutions are modified to predict this behavior of short cracks by introducing an effective crack length l0 into the solutions for intensity factors and the J integral method of analysis. The threshold stress at a very short crack length approaches the fatigue limit of the material, and therefore the value of l0 can be obtained once the threshold stress intensity factor and the fatigue limit are known. The accuracy of the term l0 in predicting crack growth rates for short cracks is found to be independent of the applied strain level. It varies linearly with the grain size of the material and can be considered at the surface as a measure of the reduced flow resistance of surface grains due to their lack of constraint.
Skip Nav Destination
Article navigation
January 1979
Research Papers
Fatigue Crack Propagation of Short Cracks
M. H. El Haddad,
M. H. El Haddad
Department of Civil Engineering, University of Waterloo, Waterloo, Ontario, Canada
Search for other works by this author on:
K. N. Smith,
K. N. Smith
Department of Civil Engineering, University of Waterloo, Waterloo, Ontario, Canada
Search for other works by this author on:
T. H. Topper
T. H. Topper
Department of Civil Engineering, University of Waterloo, Waterloo, Ontario, Canada
Search for other works by this author on:
M. H. El Haddad
Department of Civil Engineering, University of Waterloo, Waterloo, Ontario, Canada
K. N. Smith
Department of Civil Engineering, University of Waterloo, Waterloo, Ontario, Canada
T. H. Topper
Department of Civil Engineering, University of Waterloo, Waterloo, Ontario, Canada
J. Eng. Mater. Technol. Jan 1979, 101(1): 42-46 (5 pages)
Published Online: January 1, 1979
Article history
Received:
November 28, 1977
Revised:
February 15, 1978
Online:
August 17, 2010
Citation
El Haddad, M. H., Smith, K. N., and Topper, T. H. (January 1, 1979). "Fatigue Crack Propagation of Short Cracks." ASME. J. Eng. Mater. Technol. January 1979; 101(1): 42–46. https://doi.org/10.1115/1.3443647
Download citation file:
Get Email Alerts
Creep Performance Study of Inconel 740H Weldment Based on Microstructural Deformation Mechanisms
J. Eng. Mater. Technol (October 2024)
Effect of Heat Treatment on Fatigue Performance of 316L Stainless Steel Fabricated by Laser Powder Bed Fusion
J. Eng. Mater. Technol (October 2024)
Design and Development of Novel Lattice Structures for Optimum Energy Absorption
J. Eng. Mater. Technol (July 2024)
Related Articles
Prediction of Fretting Fatigue Behavior of Metals Using a Fracture Mechanics Approach with Special Consideration to the Contact Problem
J. Tribol (October,2005)
The Use of Classification Zones for Fatigue Behavior in Steels—2
J. Eng. Mater. Technol (October,1993)
The Use of Classification Zones for Fatigue Behavior in Steels
J. Eng. Mater. Technol (January,1977)
Applications of Probabilistic Fracture Mechanics to Offshore Structures
Appl. Mech. Rev (February,1988)
Related Proceedings Papers
Related Chapters
Applications of Elastic-Plastic Fracture Mechanics in Section XI, ASME Code Evaluations
Online Companion Guide to the ASME Boiler & Pressure Vessel Codes
Introductory Information
The Stress Analysis of Cracks Handbook, Third Edition
A New Formula on Fatigue Crack Propagation
International Conference on Mechanical and Electrical Technology 2009 (ICMET 2009)