Metals to polymer composites for submerged hull: a paradigm shift

Sarkar, Pramit Kumar; Kandasubramanian, Balasubramanian

doi:10.1080/25740881.2021.1930048

Cited by 5 publications

(7 citation statements)

References 80 publications

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“…For fibers such as jute, ramie, and particularly kenaf, it seems that the ratio between their elastic moduli and price would make them ideal candidates, as shown in Figure 5, which compares Young's modulus against the price for different fiber reinforcements. However, it is important to consider where natural fibers are cultivated and the costs and environmental impacts associated with their transportation overseas, which, in this case, strongly influences the material selection process [114]. For example, a study in Italy in 2016 compared the production costs of 1 m 2 of material for boat hull construction using natural fibers and traditional synthetic materials [115].…”

Section: Costsmentioning

confidence: 99%

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An Overview of Natural Fiber Composites for Marine Applications

El Hawary,

Boccarusso,

Ansell

et al. 2023

JMSE

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Environmental emergency awareness has been gaining momentum in recent years in the composite manufacturing industry, with a new generation of composite materials minimizing their harmful environmental impacts by employing more sustainable manufacturing processes and, where possible, replacing synthetic materials with more sustainable bio-based materials, thus more efficiently using energy and material resources. In this context, natural fiber composites are proposed as appealing candidates to replace or reduce the use of synthetic fibers for reinforcing polymers in several industrial fields, such as the marine sector, where composite usage has been extensively studied in recent years. This review aims to present a thorough overview of the usage of natural fiber composites for marine applications, discussing the most relevant criteria required for applications where water exposure is expected. For this purpose, the review outlines the natural fibers and matrices used, analyzes the resultant composites’ mechanical properties, and presents the fiber treatments required before manufacturing, as well as the main manufacturing processes adopted for natural fiber composite production. The advantages and disadvantages of natural fibers compared to synthetic fibers are also presented, including economic and environmental credentials. Finally, a list of marine components with natural fiber reinforcements developed in recent years is reported.

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Section: Costsmentioning

confidence: 99%

“…strongly influences the material selection process [114]. For example, a study in Italy in 2016 compared the production costs of 1 m 2 of material for boat hull construction using natural fibers and traditional synthetic materials [115].…”

Section: Costsmentioning

confidence: 99%

An Overview of Natural Fiber Composites for Marine Applications

El Hawary,

Boccarusso,

Ansell

et al. 2023

JMSE

View full text Add to dashboard Cite

show abstract

“…Therefore, the most significant and strong interfacial (in fiber reinforced) and interlaminar (in fabric‐reinforced) bonding is crucial for utilizing the reinforcing agent's strength and modulus 11–15 . However, AFs, amino bonds, and aromatic rings are linked as a backbone in a structure that induces a lack of functional groups on the skin face, high rigidity, crystallinity, chemically inertness, and smoothness to the surface 16–21 . Grafting is the technique of growing a surface layer or particle to control surface morphology, which can then manipulate UV and thermal stability, mechanical behavior, surface free energy, and interfacial bonding between the functional group/particle with the matrix 22 …”

Section: Introductionmentioning

confidence: 99%

“…[11][12][13][14][15] However, AFs, amino bonds, and aromatic rings are linked as a backbone in a structure that induces a lack of functional groups on the skin face, high rigidity, crystallinity, chemically inertness, and smoothness to the surface. [16][17][18][19][20][21] Grafting is the technique of growing a surface layer or particle to control surface morphology, which can then manipulate UV and thermal stability, mechanical behavior, surface free energy, and interfacial bonding between the functional group/particle with the matrix. 22 Thus, superior chemical and physical bonding, adhesion, and mechanical interlocking of fibrous phase with a matrix are difficult to achieve, generating barriers in their potential utilization.…”

Section: Introductionmentioning

confidence: 99%

Recent advancement in surface modification of aramid fiber assisted by supercritical carbon dioxide

Patadiya,

Chougale,

Naebe

et al. 2023

Polymers for Advanced Techs

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The exceptional mechanical properties of aramid fibers make them a popular choice for high‐performance materials; despite that, their potential is limited due to their surface properties bonding energy and interfacial bonding strength with matrix materials. The enhanced resistance of poly‐aramid fibers (AFs) to severe surroundings and improved interlaminar adhesion in sandwich compounds with admirable mechanical characteristics are becoming a great challenge for various chemical and physical surface treatment techniques. Supercritical carbon dioxide (scCO2) is a popular and sustainable approach that can effectively bond and homogeneously deposit functional groups or nanoparticles and exhibit the excellent performance of fibber modification. This article examines aramid fibers' surface modification advancements using scCO2‐assisted techniques, including monomer grafting, impregnation, and functionalization with various functional groups and nanoparticles. Additionally, the article discusses the challenges faced in scCO2‐assisted aramid fiber modification and what the future holds for this technology.

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“…In the construction of yachts and other marine vessels, synthetic fibres are frequently employed. Frequently, synthetic fibres are bonded to metal components, such as the hull or superstructure, (Sarkar and Kandasubramanian, 2021). This provides the vessel with increased strength and durability, as well as protection against water damage.…”

Section: Introductionmentioning

confidence: 99%

Investigating the lap shear adhesion of coir and glass-fibre reinforced epoxy bonding to mild steel with varying volume fractions

Alajmi,

Alsaeed,

Alotaibi

et al. 2023

Front. Mech. Eng.

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Bonding synthetic fibres to metals to improve strength, durability, and corrosion resistance is a prevalent practise in the automotive, marine, and aerospace industries. Lap shear adhesion, a measurement of the bonding strength between composites and metallic substrates, is essential for structural integrity. The emergence of natural fibre composites as sustainable alternatives to synthetic composites makes it essential to investigate their lap shear behaviour and the effect of fibre volume fraction on composite properties. This research investigates the adhesion behaviour of coir and glass fibre epoxy composites to mild steel. Coir fibres, which are known for their resilience and tenacity, were treated with an alkaline solution to improve their adhesion to the resin. Samples of lap shear adhesion were prepared in accordance with ASTM specifications, and tests were conducted using a tensile machine. Increasing the volume fraction of coir or glass fibres decreased the bond strength, as demonstrated by the results. Due to the fibres’ greater tensile strength and rigidity, glass fibre composites exhibited superior strength. However, under tensile loading conditions, coir fibres exhibited superior adhesion to mild steel surfaces. SEM micrographs confirmed that coir composites exhibit shear failure while glass composites exhibit fibre pull-out behaviour. This study concludes by highlighting the engineering potential of coir fibres, considering their natural properties and cost-effectiveness. It is necessary to further optimise the fiber-matrix interface and comprehend the mechanical behaviour of coir composites in order to maximise their effectiveness. To assure the long-term durability of composite-metal joints, surface preparation, adhesive type, application procedure, and environmental conditions must also be considered. At a content percentage of 10%, glass fibres exhibited 100% higher shear strength compared to coir fibres in epoxy composites. Conversely, coir fibres at 10% content demonstrated approximately 75% greater shear strength than the values obtained with 40% glass fibres. The failure mechanisms observed are delamination or fibre fracture in the bonding area under tensile and shear loading. Increasing the fibre volume fraction reduces bond strength. Factors such as limited space for the matrix, tension concentrations, and the mechanical properties of the fibres contribute to weakened bonds. Glass fibres have better strength and rigidity than coir fibres, affecting load transfer and adhesion. Interfacial bonding is crucial, and maintaining it becomes more difficult with higher fibre volume fractions, resulting in weakened bonds.

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Metals to polymer composites for submerged hull: a paradigm shift

Cited by 5 publications

References 80 publications

An Overview of Natural Fiber Composites for Marine Applications

An Overview of Natural Fiber Composites for Marine Applications

Recent advancement in surface modification of aramid fiber assisted by supercritical carbon dioxide

Investigating the lap shear adhesion of coir and glass-fibre reinforced epoxy bonding to mild steel with varying volume fractions

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