Fracture toughness and fatigue behaviour of materials : a review

This review will investigate fracture toughness and fatigue behaviour of materials, and also study of different parameters which have comprehensive effects on the fracture in both alloys and metals. These factors including temperature, stress, air and other environmental factors. It has found out that fatigue crack growth is a fertile area in order to do more tests on this topic. The efforts will be concentrated on investigation of the effects of temperature on fatigue and fatigue crack growth analysis in different conditions. A large number of work has been done, particularly during the last 40 years, to study the related of high temperature low cycle fatigue data with difference factors. This work has manifested itself with the establishment of no less than 31 various correlation factors. These factors attempt, in varying ways, to predict the influences of temperature, strain rate, wave shape, and other factors upon the fatigue lives of difference materials. All of these factors create a big problem for the designer when trying to decide how to best design a component or structure, and what material to use.