Output details

An investigation on fatigue crack growth rates through a designed nonsymmetric crack growth test

Significance of output:

In the design of many engineering structures, in order to predict their fatigue life, it is important to carry out crack growth analysis experimentally. These experiments are usually time consuming and costly to perform. In middle tension tests widely adopted in many laboratories, nonsymmetric cracks can occur which invalidates the data, resulting in increased cost and loss of time.

A method is developed in this paper to utilise nonsymmetric crack data to derive the fatigue crack growth parameters required for the structural design. The method is validated in this paper based on data from specially designed and conducted experiments.