EFFECT OF V SHAPE NOTCH LOCATION ON FATIGUE LIFE IN STEELBEAM MADE OF CARBON STEEL ALLOYS WITH DIFFERENT CONTENT OF CARBON

In this investigation effect of V shape notch location on fatigue life in steel beam made of carbon steel alloys with different carbon content (low, medium and high) has been studied. Fatigue life of notched specimens where there is a change in V notch shape location is calculated by applying a fully reversed cyclic load.The fatigue experiments were carried out at room temperature, with thefrequency of 50Hz and mean stress equal to zero (R= -1), on a cantilever rotating-bending fatigue testing machine. The stress ratio was kept constant throughout the experiment. Simulation by FEA have been used to estimate fatigue data based on fatigue life data obtained from the experiments for smooth specimens (reference),The results show that the notch effect become not important at the position no. 5 (central of gauge length) regardless of type of material used and there isacceptable error between experimental and numerical works.