Small imperfections in aircraft structures can grow into fatigue cracks over time during operation.
Is it true that small imperfections in aircraft structures can grow into fatigue cracks over time during operation?
Yes. Small structural imperfections and initial flaws in aircraft materials act as stress concentrators that progressively propagate into fatigue cracks under operational cyclic loading.
Verdict: SUPPORTED · 5 sources for, 0 against · Last checked
The retrieved literature thoroughly documents the phenomenon of fatigue crack growth originating from small initial flaws, defects, or stress concentrations in aircraft and metallic structures under cyclic loading conditions. Multiple papers validate modeling approaches and failure analyses concerning how initial imperfections extend over time during operation.
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Newman, J. (1981). A Crack-Closure Model for Predicting Fatigue Crack Growth under Aircraft Spectrum Loading. doi.org. https://doi.org/10.1520/stp28334s
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Laird, C. (1967). The Influence of Metallurgical Structure on the Mechanisms of Fatigue Crack Propagation. doi.org. https://doi.org/10.1520/stp47230s
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Wang, Q., Zhang, W., & Jiang, S. (2015). Fatigue Life Prediction Based on Crack Closure and Equivalent Initial Flaw Size. doi.org. https://doi.org/10.3390/ma8105367
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Abelkis, P. (1980). Effect of Transport Aircraft Wing Loads Spectrum Variation on Crack Growth. doi.org. https://doi.org/10.1520/stp27487s
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B, Z., L, Z., X, W., J, Y., X, C., H, X., Z, Z., X, L., F, Z., J, P., H, J., & G, Z. (2026). High-accuracy fatigue life prediction and early fracture warning for ferromagnetic metals via spin correlation amplification.. doi.org. https://doi.org/10.1038/s41467-026-70290-w
What does the evidence say?
The retrieved literature thoroughly documents the phenomenon of fatigue crack growth originating from small initial flaws, defects, or stress concentrations in aircraft and metallic structures under cyclic loading conditions. Multiple papers validate modeling approaches and failure analyses concerning how initial imperfections extend over time during operation.
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