Enhancing mechanical performance of kenaf fiber reinforced polymer composites: influence of fiber characteristics and processing techniques

The inherent fiber strength of kenaf is decent because of the high cellulose content and low micro fibrillar angle of the fiber. During the hand layup process of creating the epoxy matrix composite, it will be used as reinforcement in the proposed project. Composite testing has looked at how differe...

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Bibliographic Details
Published in:Hyperfine interactions 2024-11, Vol.245 (1)
Main Authors: Chanderasekaran J H Rakini, Naidu B Vishnu Vardhana, Palanisamy Satishkumar, Sugumari, Vallinayagam, Rajasekaran, Saminathan
Format: Article
Language:English
Subjects:
Cellulose fibers
Epoxy matrix composites
Fiber composites
Fiber pullout
Fiber reinforced polymers
Fiber strength
Flexural strength
Hand lay-up
Impact strength
Kenaf
Long fibers
Mechanical properties
Polymer matrix composites
Short fibers
Tensile strength
Water absorption
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Summary:The inherent fiber strength of kenaf is decent because of the high cellulose content and low micro fibrillar angle of the fiber. During the hand layup process of creating the epoxy matrix composite, it will be used as reinforcement in the proposed project. Composite testing has looked at how different fiber types, orientations, and content affect mechanical properties. Different types of fibers (short length and long length fibers), orientations (0°, 90°, and 60°), and fiber contents (6, 12, and 18) were altered to prepare the samples. At 18 wt% fiber content, the mechanical characterization results show that the short fiber composite achieves its maximum tensile strength of 24.90 MPa and its ultimate fiber strength of 45.94 MPa. Nevertheless, the highest tensile and fracture strengths of long fiber reinforced composites containing 5% fiber are 38.96 MPa and 59.43 MPa, respectively. The composite showed an impact strength of 25.30 J m− 2 and a highest flexural strength of 56.32 MPa with fibres orientated at 0°. A maximum water absorption value of 1.25% was recorded for long fiber reinforced composites and 1.74% for short fiber reinforced composites. At last, the morphological analysis was performed to identify the most common causes of composite failure: debonding, splitting, and fiber pull-out.
ISSN:0304-3843
1572-9540
DOI:10.1007/s10751-024-02130-6