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- Title
Impact Damage Resistance and Post-Impact Tolerance of Optimum Banana-Pseudo-Stem-Fiber-Reinforced Epoxy Sandwich Structures.
- Authors
Hassan, Mohamad Zaki; Sapuan, S. M.; Rasid, Zainudin A.; Nor, Ariff Farhan Mohd; Dolah, Rozzeta; Daud, Mohd Yusof Md
- Abstract
Banana fiber has a high potential for use in fiber composite structures due to its promise as a polymer reinforcement. However, it has poor bonding characteristics with the matrixes due to hydrophobic-hydrophilic incompatibility, inconsistency in blending weight ratio, and fiber length instability. In this study, the optimal conditions for a banana/epoxy composite as determined previously were used to fabricate a sandwich structure where carbon/Kevlar twill plies acted as the skins. The structurewas evaluated based on two experimental tests: low-velocity impact and compression after impact (CAI) tests. Here, the synthetic fiber including Kevlar, carbon, and glass sandwich structures were also tested for comparison purposes. In general, the results showed a low peak load and larger damage area in the optimal banana/epoxy structures. The impact damage area, as characterized by the dye penetration, increased with increasing impact energy. The optimal banana composite and synthetic fiber systems were proven to offer a similar residual strength and normalized strength when higher impact energieswere applied. Delamination and fracture behaviorwere dominant in the optimal banana structures subjected to CAI testing. Finally, optimization of the compounding parameters of the optimal banana fibers improved the impact and CAI properties of the structure, making them comparable to those of synthetic sandwich composites.
- Subjects
SYNTHETIC fibers; EPOXY resins; COMPOSITE structures; POLYPHENYLENETEREPHTHALAMIDE; FIBROUS composites; PEAK load; GLASS structure
- Publication
Applied Sciences (2076-3417), 2020, Vol 10, Issue 2, p684
- ISSN
2076-3417
- Publication type
Article
- DOI
10.3390/app10020684