After presenting an overview of fatigue behaviour and damage mechanics in single lap bonded joints, this chapter illustrates a model which describes the fatigue life of the joint as the sum of initiation and propagation up to failure of an average crack. Life to crack initiation is calculated by using a stress intensity factor approach and life spent in the propagation phase by the integration of a crack growth power law. Details of the analytical and numerical tools required by the model, the procedure for its application and the validation against experimental results are discussed.
Life prediction for bonded joints in composite materials based on actual fatigue damage
MENEGHETTI, GIOVANNI;QUARESIMIN, MARINO;RICOTTA, MAURO
2010
Abstract
After presenting an overview of fatigue behaviour and damage mechanics in single lap bonded joints, this chapter illustrates a model which describes the fatigue life of the joint as the sum of initiation and propagation up to failure of an average crack. Life to crack initiation is calculated by using a stress intensity factor approach and life spent in the propagation phase by the integration of a crack growth power law. Details of the analytical and numerical tools required by the model, the procedure for its application and the validation against experimental results are discussed.
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