Probabilistic fatigue life analysis considering mean stress effects of fiber reinforced polymer (FRP) composites

Gao, Qinglin; Xin, Haohui; Correia, José A.F.O.; Mosallam, Ayman; Berto, Filippo

doi:10.1016/j.ijfatigue.2022.106951

Cited by 9 publications

(4 citation statements)

References 41 publications

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“…The materials withstand a large number of cycles, exceeding 10,000, at relatively low-stress levels (below 50% of UTS, respectively) without signs of failure. This indicates that the material has the potential for long-term reliability in low to moderate load structural applications involving cyclic loading [51,52].…”

Section: Fatigue Analysismentioning

confidence: 98%

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: 98%

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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“…The Bayesian method based on Markov chain Monte Carlo (MCMC) is employed to sample the probability distribution. The detailed procedures can refer to [32].…”

Section: Probabilistic Analysis Of Fatigue Crack Propagation Ratementioning

confidence: 99%

Mixed-mode fatigue crack propagation simulation by means of Geq and walker models of the structural steel S355

Xin

Liu

Correia

et al. 2023

Theoretical and Applied Fracture Mechanics

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“…The materials withstand a high number of cycles, in excess of 10,000, at relatively low stress levels with no signs of failure. This indicates that the material has the potential for long-term reliability in structural applications involving cyclic loading [35,36]. Figure 14 shows the fatigue test results, focusing on the failure modes at 60% fatigue life.…”

Section: Fatigue Analysismentioning

confidence: 99%

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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Probabilistic fatigue life analysis considering mean stress effects of fiber reinforced polymer (FRP) composites

Cited by 9 publications

References 41 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

Mixed-mode fatigue crack propagation simulation by means of Geq and walker models of the structural steel S355

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

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