Abstract
This paper details investigations into the importance of the crack growth rate data used in conjunction with FASTRAN to make fatigue crack growth predictions. Selected fighter and transport aircraft load spectra have been used in the present investigation to determine the regions of the crack growth rate curve that dominate the crack growth predictions. The results of the analysis show that universally crack growth predictions under typical aircraft load spectra utilize a significant portion of the crack growth rate curve close to the threshold region. Of note is the observation that both fighter and transport aircraft display this same behaviour throughout the entire crack growth prediction. This finding demonstrates the requirement for accurate crack growth rate data for small cracks to obtain appropriate total fatigue life predictions.
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© 2011 Springer-Verlag Berlin Heidelberg
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Wallbrink, C., Jackson, P., Hu, W. (2011). Crack Growth Rate Curves: Which Part Dominates Life Prediction and When?. In: Komorowski, J. (eds) ICAF 2011 Structural Integrity: Influence of Efficiency and Green Imperatives. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-1664-3_24
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DOI: https://doi.org/10.1007/978-94-007-1664-3_24
Publisher Name: Springer, Dordrecht
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