Method of Fracture Toughness Estimation in Corrosive Media under Long-Term Static Load

Critical analysis of the methods of testing for fracture toughness in corrosive media under long-term load is presented. Bearing in mind the shortcomings of the known methods, we develop a technique for estimating the fracture toughness of structural materials in corrosive media under the impact of a long-term static load which is set with a high accuracy on a testing machine, which is then fixed with a spacer bolt. The method makes it possible to determine the effective load in the sample at any given time and study the kinetics of corrosion attack and change in the fracture toughness under conditions of long static loading.