Comments on life prediction criteria and damage mechanics

6 Comments on life prediction criteria and damage mechanics 

The overview of the behavior of continuous hber reinforced composites under multiaxial cyclic loading presented in Section 7.4 and the assessment of certain predictive criteria reported in Section 7.5 indeed provide some support for the design of structural composite parts subjected to in-service loadings. On the other hand, they also display the complexity of the problem exacerbated by the large number of variables that 

The way to resolve the problem is quite clear, although not very straightforward. In fact, a predictive criterion of general validity and wide applicability can be developed only on the basis of an accurate description and understanding of the damage mechanisms under multiaxial loading, incorporating these quantitatively into the model formulation. 

A recent review by the authors [1] presents several works on fatigue damage under multiaxial loading. Unfortunately, most of these describe damage evolution 

Great attention should therefore be paid when planning experimental activities. Testing hoop-wound tubes under combined tension—torsion loading is a good 

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