Research progress in damage evolution of woven composites

Abstract

<p indent=0mm>Woven composites have better integrity and anti-delamination properties than laminates, due to the interlaced yarns in the woven structures. However, these structural characteristics lead to a more complex failure mechanism, which brings great challenges to the damage evolution studies of woven composites. In this paper, the research status of damage evolution of woven composites is summarized and reviewed from the aspects of experimental techniques, damage evolution model and simulation. In terms of experimental techniques, the methods to characterize the damage evolution of woven composites are summarized emphatically, including the damage characterization based on strain, acoustic emission, infrared characteristics and computed tomography (CT). The application conditions, problems and challenges of these methods are reviewed briefly. In terms of damage evolution models and numerical simulations, the typical research methods for woven composites under quasi-static load, fatigue and impact load are summarized considering the loading characteristics. On the basis of the above summaries, the future research trends of damage evolution of woven composites are put forward, including the multi-means integrated characterization of damage mechanisms, damage related tests of macro and meso basic mechanical properties, macro and meso strength criterion and strength design, simulation models combining machine learning algorithm and finite element method or more, service performance studies based on digital twin and whole life cycle under complex circumstances, etc.