Effect of Geometry, Material and Strength Reduction Factor on the Fatigue Life of the Symmetrical Leaf Spring

task as the experimental procedure is time consuming and costly. The work presented in this paperdepicts the effect of variation of an individual factor ratio on the fatigue life of a leaf spring. A computer programhas been written in FORTRAN, for determination of the fatigue life of a LCV leaf spring, has been validatedexperimentally. The geometry factor width to span (b/L )ratio ,material factor ultimate tensile strength to Young’sModulus (Sut/E)ratio and overall strength reduction factor (Kf) have been considered in this work. The effect ofvariation of each factor on the fatigue life of the leaf spring has been determined using statistical tool NCSS. Theregression model has been depicted and validated analytically and experimentally.