Fatigue Damage Evolution of Notched Composite Multilayered Structures under Tensile Loads

The problems discussed in the present paper are well-known both from thetheoretical (numerical) and experimental point of view. The novelty of our approach dependson the application of the hybrid experimental methods and the comparison of theireffectiveness in the description of complicated fatigue problems arising in analysis of thebehaviour of laminated panels with open holes and subjected to tensile loading. Threeexperimental methods are used herein: the infra-red thermography (passive), the structuralhealth monitoring (active) and the digital image correlation. The experimental investigationsare supplemented by the finite element description of the problem dealing mainly with thestatic behaviour, monitoring the development and final fracture of composites. Theconsiderations concerns the laminated panels oriented at ±45 with different types of holes, i.e.vertical elliptical, horizontal elliptical and circular.

Keywords:

Fatigue , open holes tensile tests , infra-red thermography , structural health monitoring , digital image correlation