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A Cycle Counting Algorithm for Fatigue Damage Analysis
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English
Abstract
A cycle counting algorithm that will reduce a complex history into a series of discrete cycles is presented. The cycles determined by this technique are defined as closed stress-strain hysteresis loops of the type obtained from constant amplitude tests. Using the computer cycle counting algorithm, life predictions were made and compared with experimental results. These predictions were found to be typically within a ±3 factor of error. Also, the computer counting method was found to yield more accurate life predictions when compared to the histogram and range counting methods.
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Authors
Citation
Richards, F., LaPointe, N., and Wetzel, R., "A Cycle Counting Algorithm for Fatigue Damage Analysis," SAE Technical Paper 740278, 1974, https://doi.org/10.4271/740278.Also In
References
- Dowling N. E. “Fatigue Failure Predictions for Complicated Stress-Strain Histories,” Jrl. of Materials, JMLSA 7 1 March 1972
- Wetzel R. M. “A Method of Fatigue Damage Analysis.” Ford Motor Co. Scientific Research Staff Report No. SR 71-107 September 1968
- Landgraf R. W. “Cumulative Fatigue Damage Under Complex Strain Histories.” ASTM STP 519, Cyclic Stress-Strain Behavior-Analysis, Experimentation and Prediction American Society for Testing and Materials 1973
- Wetzel R. M. Morrow J. Topper T. H. “Fatigue of Notched Parts with Emphasis on Local Stresses and Strains.” Naval Air Development Center Report No. NADC-ST-6818 September 1968