Abstract
In this study, fatigue life prediction and the correlation of Z Type leaf springs were investigated. Leaf springs are tested with different loads until failure and component S-N curve is constructed to take account of process effects. Rate measurement on test rig is completed for first FE correlation. Collected time based strain data is used for the second FE correlation. WFT loads are applied to the FE model hardpoint and compared damage effects so expected test rig specification is determined. After completion of the vehicle durability test, the remaining life of the part is determined via component test rig for third correlation.
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