Voids in fiber-reinforced polymer composites: A review on their formation, characteristics, and effects on mechanical performance

Mahoor Mehdikhani; Larissa Gorbatikh; Ignaas Verpoest; Stepan V Lomov

doi:10.1177/0021998318772152

journal article Open Access Nov 20, 2018

Voids in fiber-reinforced polymer composites: A review on their formation, characteristics, and effects on mechanical performance

Mahoor Mehdikhani

Larissa Gorbatikh

Ignaas Verpoest Stepan V Lomov

Journal of Composite Materials Vol. 53 No. 12 pp. 1579-1669 · SAGE Publications

View at Publisher Save 10.1177/0021998318772152

Abstract

Voids, the most studied type of manufacturing defects, form very often in processing of fiber-reinforced composites. Due to their considerable influence on physical and thermomechanical properties of composites, they have been extensively studied, with the focus on three research tracks: void formation, characteristics, and mechanical effects. Investigation of voids in composites started around half a century ago and is still an active research field in composites community. This is because of remaining unknowns and uncertainties about voids as well as difficulties in their suppression in modern manufacturing techniques like out-of-autoclave curing and parts with high complexity, further complicated by increased viscosity of modified resins. Finally, this is because of the increasing interest in realization of more accurate void rejection limits that would tolerate some voidage. The current study reviews the research on formation, characterization, and mechanical effects of voids, which has been conducted over the past five decades. Investigation and control of void formation, using experimental and modeling approaches, in liquid composite molding as well as in prepreg composite processing are surveyed. Techniques for void characterization with their advantages and disadvantages are described. Finally, the effect of voids on a broad range of mechanical properties, including inter-laminar shear, tensile, compressive, and flexural strength as well as fracture toughness and fatigue life, is appraised. Both experimental and simulation approaches and results, concerning voids' effects, are reviewed.

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Metrics

812

Citations

289

References

Details

Published: Nov 20, 2018
Vol/Issue: 53(12)
Pages: 1579-1669
License: View

Authors

M

Mahoor Mehdikhani

Department of Materials Engineering, KU Leuven, Belgium; SIM M3 Program, Belgium

L

Larissa Gorbatikh

Department of Materials Engineering, KU Leuven, Belgium; SIM M3 Program, Belgium

I

Ignaas Verpoest

Department of Materials Engineering, KU Leuven, Belgium

S

Stepan V Lomov

Department of Materials Engineering, KU Leuven, Belgium; SIM M3 Program, Belgium

Funding

IBO project M3Strength

Cite This Article

Mahoor Mehdikhani, Larissa Gorbatikh, Ignaas Verpoest, et al. (2018). Voids in fiber-reinforced polymer composites: A review on their formation, characteristics, and effects on mechanical performance. Journal of Composite Materials, 53(12), 1579-1669. https://doi.org/10.1177/0021998318772152

Voids in fiber-reinforced polymer composites: A review on their formation, characteristics, and effects on mechanical performance

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