Deconstructing Airframe Fatigue: The Hidden Stresses on Aircraft Structures
Aircraft structures are subjected to repeated stress cycles during every flight, primarily from cabin pressurization, turbulence, and landing impacts. This cyclical loading leads to a phenomenon known as metal fatigue, where microscopic cracks can form and propagate over time. If not properly managed, this fatigue can compromise the structural integrity of the airframe. Modern aircraft are designed with damage-tolerant philosophies to ensure safety even with the presence of small cracks. Therefore, rigorous inspection programs are fundamental to detecting and repairing fatigue damage long before it can become a safety issue.
Official Source: https://leehamnews.com/2026/06/05/bjorns-corner-aircraft-structures-part-4-airframe-structure-fatigue/
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