ATIGUE LIFE PREDICTION FOR PERFORATED PLATE BASED ON INELASTIC BEHAVIOR

This research aims to present the fatigue life prediction for the perforated plate based on the inelastic behavior of the Neuber's law and the Stress Redistribution Locus (SRL) method. The specimens are made from stainless steel (AISI 304). The temperature is kept to be 550°C. The geometries of specimens are changed by the diameter size of holes. The Neuber's law and the SRL method are used to predict the cycle number of crack initiation (Nc) and the cycle number to failure (Nf) for the perforated plate. The results demonstrated the prediction method for strain amplitude is employed by the proposed method of the Neuber's law and the SRL method under the strain range of 0.25 and 0.5%. The prediction trend by the SRL method is more accurate for predicting the crack initiation of the perforated plate than that the Neuber's law. However, the selection of accurate and appropriate methods for prediction is the benefit in cost reduction for used material in design and construction.