The increased usage of fiber reinforced polymer composites in load bearing applications requires a detailed understanding of the process induced residual stresses and their effect on the shape distortions. This is utmost necessary in order to have more reliable composite manufacturing since the residual stresses alter the internal stress level of the composite part during the service life and the residual shape distortions may lead to not meeting the desired geometrical tolerances. The occurrence of residual stresses during the manufacturing process inherently contains diverse interactions between the involved physical phenomena mainly related to material flow, heat transfer and polymerization or crystallization. Development of numerical process models is required for virtual design and optimization of the composite manufacturing process which avoids the expensive trial-and-error based approaches. The process models as well as applications focusing on the prediction of residual stresses and shape distortions taking place in composite manufacturing are discussed in this study. The applications on both thermoset and thermoplastic based composites are reviewed in detail.

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A Review on the Mechanical Modeling of Composite Manufacturing Processes

Formability analyses of uni-directional and textile reinforced thermoplastics Part A Applied science and manufacturing

A thermo-viscoelastic model of process-induced residual stresses in composite structures with considering thermal dependence

The development of novel strategies for recycling and reusing fiber composites is driven by various environmental and economic factors. Recycling materials mean that materials are processed with feasible processing methods or environment-friendly methods without deterioration of mechanical or physical performance enabling their reuse. Recycling end-of-life (EOL) waste of wind turbine (WT) blade composites is a critical challenge for renewable energy sector. This paper reviews various recycling methods (mechanical, thermal, chemical, and hybrid) and reuse of reclaimed fiber composites of carbon and glass fibers. Physical, mechanical, and chemical properties of recovered fibers and new composites (made of recovered fibers) have been discussed in detail. This paper aims to find out the optimum recycling process from existing recycling methods to recycle EOL waste of WT blades. Glass fibers (GFs) and carbon fibers (CFs) are energy-intensive to manufacture, which means these have high recycling capability in terms of the environment as well as an economic perspective. Challenges in the recycling of fibers have been identified from the available literature; future research possibilities with promising values of recovered fibers to reuse in some high-value structural applications have been highlighted.

A review on recycling and reuse methods for carbon fiber/glass fiber composites waste from wind turbine blades

Based on the increasing number of end of life wind turbine blades and the emphasis on resource conservation and environmental protection, more and more attention has been paid to the recycling and ...

Recycling and reuse of composite materials for wind turbine blades: An overview:

A three-dimensional thermo-viscoelastic analysis of process-induced residual stress in composite laminates

The popular analytical and numerical models to residual stresses and distortions in composite structures during curing are reviewed with emphases being placed on the numerical models with viscoelas...

Anxin Ding

Papers

A three-dimensional thermo-viscoelastic analysis of process-induced residual stress in composite laminates

A thermo-viscoelastic model of process-induced residual stresses in composite structures with considering thermal dependence

A comparison of process-induced residual stresses and distortions in composite structures with different constitutive laws:

Effect of novel intumescent flame retardant on mechanical and flame retardant properties of continuous glass fibre reinforced polypropylene composites

A new analytical solution for spring-in of curved composite parts