Vibration-Damping Factor of Glass/Kenaf/Polyester Hybrid Composite

Diharjo, Kuncoro; Susilo, Didik Djoko; Sudargo, Petrus Heru; Kaleg, Sunarto

doi:10.4028/www.scientific.net/kem.772.38

Cited by 8 publications

(3 citation statements)

References 11 publications

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“…Similarly, findings from Diharjo et al [46] show that an increase in the kenaf-to-glass fibre ratio led to an improved vibration-damping factor and a decrease in the elastic modulus of the hybrid composite. The increased kenaf content in the hybrid composite introduces additional mechanisms for energy absorption, enhancing the composite's resistance to fatigue crack initiation and propagation [47].…”

Section: Fatigue Analysismentioning

confidence: 60%

Fatigue and Impact Properties of Kenaf/Glass-Reinforced Hybrid Pultruded Composites for Structural Applications

Balakrishnan,

Sultan,

Shahar

et al. 2024

Materials

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To address the weight, cost, and sustainability associated with fibreglass application in structural composites, plant fibres serve as an alternative to reduce and replace the usage of glass fibres. However, there remains a gap in the comprehensive research on plant fibre composites, particularly in their durability for viable structural applications. This research investigates the fatigue and impact properties of pultruded kenaf/glass-reinforced hybrid polyester composites tailored for structural applications. Utilising kenaf fibres in mat form, unidirectional E-glass fibre direct roving yarns, and unsaturated polyester resin as key constituents, pultruded kenaf/glass hybrid profiles were fabricated. The study reveals that pultruded WK/UG alternate specimens exhibit commendable fatigue properties (18,630 cycles at 60% ultimate tensile strength, UTS) and fracture energy (261.3 kJ/m2), showcasing promise for moderate load structural applications. Notably, the pultruded 3 WK/UG/3WK variant emerges as a viable contender for low-load structural tasks recorded satisfactory fatigue properties (10,730 cycles at 60% UTS) and fracture energy (167.09 kJ/m2). Fatigue failure modes indicate that the stress applied is evenly distributed. Ductile failures and delaminations during impact test can be attributed to damping and energy absorbing properties of kenaf fibres. Moreover, incorporating kenaf as a hybrid alternative demonstrates substantial reductions in cost (35.7–50%) and weight (9.6–19.1%). This research establishes a foundation for advancing sustainable and efficient structural materials and highlights the significant role of materials design in shaping the future of engineering applications.

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Section: Fatigue Analysismentioning

confidence: 60%

Fatigue and Impact Properties of Kenaf/Glass-Reinforced Hybrid Pultruded Composites for Structural Applications

Balakrishnan,

Sultan,

Shahar

et al. 2024

Materials

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“…Similarly, the results of Diharjo et al [31] show that increasing the ratio of kenaf to glass fibres leads to an improved damping ratio and reduced elastic modulus of the hybrid composite. The increased kenaf content in the hybrid composite introduces additional energy absorption and crack deflection mechanisms, increasing the resistance of the composite to fatigue crack initiation and propagation [32].…”

Section: Fatigue Analysismentioning

confidence: 64%

Enhancing Material Design for Structural Applications: Investigating the Durability of Woven Kenaf/Unidirectional Glass Roving Reinforced Hybrid Pultruded Composites

Balakrishnan,

Sultan,

Shahar

et al. 2023

Preprint

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In order to address the issues of weight, cost and sustainability issues associated with the application of glass fibre in structural composites, plant fibres are proposed as an alternative to reduce and replace the usage of glass fibres. Despite this, there is still a gap in comprehensive research on plant fibre composites, especially with regard to their durability in real structural applications. This research investigates the fatigue and impact properties of pultruded hybrid polyester composites reinforced with glass fibre and kenaf, tailored for structural applications. Utilising kenaf fibres in mat form, unidirectional glass fibre direct roving yarns and unsaturated polyester resin as key components, pultruded kenaf/glass hybrid profiles were meticulously fabricated. Comparative cost and weight analyses were conducted between pultruded hybrid and non-hybrid profiles. The study showed that the pultruded kenaf/glass alternative laminates exhibit commendable fatigue and impact resistance, making them suitable for use in moderately loaded structural applications. Moreover, the use of kenaf as a hybrid alternative shows significant cost and weight reductions. This research provides a basis for the development of sustainable and efficient structural materials and highlights the significant role of material design in shaping the future of engineering applications.

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“…The criteria for rocket motor case material are lightweight and high strength. Aluminium 6061, Carbon Fiber Reinforced Polymer (CFRP), and Glass Fiber Reinforced Polymer (GFRP) are chosen for it [8][9][10][11]. The material properties of Aluminium 6061, CFRP, and GFRP are shown in Table 2.…”

Section: Finite Element Analysismentioning

confidence: 99%

Stress Analysis of Thick-Walled Cylinder for Rocket Motor Case under Internal Pressure

Wibawa¹,

Diharjo²,

Raharjo³

et al. 2020

ARFMTS

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This paper investigated the stresses developed in a thick-walled cylinder for rocket motor case under internal pressure. Stress analysis used the finite element method with ANSYS software for rocket motor case selection. The simulation used thick-walled cylinders with wall thickness 6, 7, 8, 9, and 10 mm having 300 mm long and outer diameter of 122 mm. It used an internal pressure of 2, 4, 6, 8, and 10 MPa. The material variation in this research used Aluminium 6061, CFRP, and GFRP. Comparing the hoop and longitudinal stress values between analytics and simulations were for the validation process. The simulation results show that the thicker the cylinder wall, the von Mises stress decreases. Aluminium 6061 and CFRP have a safety factor greater than 1 for all wall thickness and internal pressure variations. GFRP has a safety factor greater than 1 for all internal pressure variations when the wall thickness of 10 mm.

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Vibration-Damping Factor of Glass/Kenaf/Polyester Hybrid Composite

Cited by 8 publications

References 11 publications

Fatigue and Impact Properties of Kenaf/Glass-Reinforced Hybrid Pultruded Composites for Structural Applications

Fatigue and Impact Properties of Kenaf/Glass-Reinforced Hybrid Pultruded Composites for Structural Applications

Enhancing Material Design for Structural Applications: Investigating the Durability of Woven Kenaf/Unidirectional Glass Roving Reinforced Hybrid Pultruded Composites

Stress Analysis of Thick-Walled Cylinder for Rocket Motor Case under Internal Pressure

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