Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7892147 | Composites Part A: Applied Science and Manufacturing | 2015 | 11 Pages |
Abstract
In this study we investigate the tensile behaviour of unidirectional and cross-ply composites reinforced with ductile stainless steel fibres and modified adhesion to the epoxy matrix. Results show that annealed stainless steel fibres have a potential in designing tough polymer composites for structural applications. The stiffness of the UD composites made from these fibres is 77GPa combined with the strain-to-failure between 15% and 18% depending on the level of adhesion. Silane treatments were used to modify the adhesion. By treating the stainless steel fibres with different silane coupling agents, an increase of 50% in the transverse 3-point-bending strength was realised. Increasing the adhesion by 50% leads to a higher tensile strength and strain-to-failure in both UD and cross-ply laminates and a higher in-situ strength of the 90° plies. It also delays formation of matrix cracks and hinders growth of debonding.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Michaël Guy Callens, Larissa Gorbatikh, Ellen Bertels, Bart Goderis, Mario Smet, Ignaas Verpoest,