What factors contribute to F&DT failure?

Question

Accepted Answer

F&DT failure is influenced by various factors including material properties, design flaws, and environmental conditions.

Material Properties: Poor material selection can lead to inadequate fatigue resistance, e.g., using low-strength alloys in high-stress areas.
Design Flaws: Inadequate design margins or stress concentrations can initiate failure, such as sharp corners in load-bearing components.
Manufacturing Defects: Flaws like voids or inclusions introduced during manufacturing can weaken components, leading to premature failure.
Environmental Factors: Corrosion or extreme temperatures can degrade material properties over time, e.g., exposure to saltwater in marine applications.
Loading Conditions: Unexpected loading scenarios, such as dynamic loads or vibrations, can exceed design limits, causing fatigue failure.

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