Tensile strength and fracture of sunhemp-carbon hybrid fibre composite

Composites ◽  
1987 ◽  
Vol 18 (2) ◽  
pp. 184
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Sarah Salleh ◽  
Rohah A. Majid ◽  
Wira Jazair Yahya ◽  
Hasannuddin Abd Kadir ◽  
Arif Fahim Ezzat Chan ◽  
...  

Abstract Bagasse sugarcane (BSC) has low fibre strength due to low cellulose content. Hence, by adding a strong secondary fibre that is high in cellulose such as pineapple leaf fibre (PALF), the fibre strength of the system can be improved. High portion of PALF decreased the composite paper performance because the high composition of PALF tends to produce flocs and agglomerates fibres. The arrangement of the fibres in composite paper should be improved so that this agglomerate’s effect could be overcome. A novel multilayer hybrid fibre composite was used. BSC/PALF with several hybrid ratios was studied in terms of the mechanical and moisture properties of the produced paper sheet and the results showed that multilayer hybrid composite paper produced higher in hybrid composite paper’s properties compared with random hybrid composite paper. The colour of multilayer hybrid fibre composite paper resembled the natural bright colour of BSC and the multilayer hybrid fibre composite paper also shown a slightly low weight loss percentage compared with the random hybrid fibre composite paper after 60 days of soil burial test. As a conclusion, multilayer hybrid fibre composite produced the stronger interfibre bonding and overcome the agglomerate’s effect between BSC/PALF compared with random hybrid fibre composite.


2020 ◽  
Vol 110 (07-08) ◽  
pp. 517-520
Author(s):  
Paul Ruhland ◽  
Jonas Nieschlag ◽  
Sven Coutandin ◽  
Jürgen Fleischer

Hybride Faserverbund-Metall-Bauteile für Anwendungen als Antriebswellen, Achsen oder Zug-Druck-Stangen besitzen aufgrund ihres hohen Leichtbaugrades ein enormes Potenzial in den unterschiedlichsten Branchen. In diesem Beitrag wird das Rotational-Moulding-Verfahren vorgestellt, mit welchem derartige Bauteile schnell und kostengünstig hergestellt werden können.   Hybrid fibre-composite metal components for applications as drive shafts, axles or tension-compression rods have enormous potential in a wide range of industries due to their lightweight construction properties. This article presents the rotational moulding process to produce such components quickly and economically.


Author(s):  
Agung Efriyo Hadi ◽  
Tezara Cionita ◽  
Deni Fajar Fitriyana ◽  
Januar Parlaungan Siregar ◽  
Ahmed Nurye Oumer ◽  
...  

Incorporating natural fibre as reinforcement in the polymer matrix has shown a negative effect since the natural fibre is hydrophilic. The natural fibre easily absorbs water which causes an effect on the mechanical properties of the composites. The objective of this paper is to investigate the water absorption behaviour of hybrid jute-roselle woven fibre reinforced unsaturated polyester composite and the effect of water absorption in terms of tensile strength and tensile modulus. The effect of hybrid composite on the thickness swelling will be tested. The fabrication method used in this study is the hand lay-up technique to fabricate 2-layer and 3-layer composites with layering sequences of woven jute (J)/roselle (Ro) fibre. The results of the study showed that pure roselle fibres for 2 and 3-layer composites have the highest water absorption behaviour 3.86% and 5.51%, respectively, in 28 days) as well as thickness swelling effect, whereas hybrid J-Ro and J-J-Ro composites showed the least water absorption (2.65% and 3.76%, respectively) in 28 days) in both the tests. The hybridisation between jute and roselle fibres reduced water absorption behaviour and improved the fibres dimensional stability. The entire composites showed a decreasing trend for both tensile strength and tensile modulus strength after five weeks of water immersion. Jute fibre composite hybridised with roselle fibre can be used to reduce the total reduction of both tensile strength and tensile modulus throughout the whole immersion period. Moreover, the tensile testing showed that jute fibre composite hybridised with roselle fibre have produced the strongest composite with the highest tensile and modulus strength compared to other types of composites. The hybridisation of diverse fibre reinforcements aids in minimising the composite water absorption and thickness swelling, hence reducing the effect of tensile characteristics.


2013 ◽  
Vol 718-720 ◽  
pp. 63-68 ◽  
Author(s):  
Raja R. Niranjan ◽  
S. Junaid Kokan ◽  
R. Sathya Narayanan ◽  
S. Rajesh ◽  
V.M. Manickavasagam ◽  
...  

The natural fibre composite materials are nowadays playing a vital role in replacing the conventional and synthetic materials for industrial applications. This paper proposes a natural fiber composite made of Abaca fibre as reinforcing agent with Epoxy resin as the matrix, manufactured using Hand Lay-up method. Glass Fiber Reinforced Plastics (woven rovings) are used to improve the surface finish and impart more strength and stiffness to natural fibers. In this work, the fibers are arranged in alternative layers of abaca in horizontal and vertical orientation. The mechanical properties of the composite are determined by testing the samples for tensile and flexural strength. It is observed that the tensile strength of the composite material is dependent on the strength of the natural fiber and also on the interfacial adhesion between the reinforcement and the matrix. The composite is developed for automobile dashboard/mudguard application. It may also be extended to biomedical, electronics and sports goods manufacturing. It can also be used in marine products due to excellent resistance of abaca to salt water damage since the tensile strength when it is wet.


2018 ◽  
Author(s):  
Muhammad Rafiq Yanhar

The primary purpose of this study is to determine the tensile strength and density) of the Indonesian term teki grass (Cyperus rotundus) in which this teki grass is used as the reinforcement materials for the production of fibre composite. The production process is carried out by using varieties of fiber directions ranging from 0°, 45°, 90°,and random.The methods in use is hand lay-up with 3 repetitions. Teki grass is chosen because it is easily found and has the following significances: biodegradable, harmless to health, available in nature in large quantities, and cost-efficient. Another reason because this plant is also an agricultural weed that is difficult to eradicate, not fully utilized, and often found in open field. While a matrix for fiber binder selected from epoxy resin material. From the test results it can be concluded that the variations in the direction of fibers effect on the tensile strenght of the composite. Average tensile strength of specimens with fibre directions of 0°, 45°, 90°, and random are 15.60 MPa, 18,69MPa, 30.11 MPa, and 22.79 MPa. In contrast, variations of fibre directions do not affect the density.


2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Navin Kumar ◽  
Ravinderjit Singh Walia ◽  
Surjit Angra

Purpose The purpose of this study is to develop jute-glass hybrid fibre reinforced polyester-based bio-composites using an indigenously developed pultrusion set-up and to present a detailed discussion on their mechanical characterization. Design/methodology/approach The work was carried out to observe the hybridization effect of natural and synthetic fibres in combination with hybrid fillers loading mainly on strength and other properties. The used hybrid fillers were a combination of 9 Wt.% of carbon black%, 6 Wt.% of eggshell ash powder and 6 Wt.% of coconut coir ash powder. A lab-based developed pultrusion set-up was used to develop these hybrid GJFRP composites of 1,500 mm length. The developed composites were tested for tensile strength, compressive strength and impact strength. Findings The maximum tensile, compressive and impact strength obtained are 88.37 MPa, 56.13 MPa and 731.91 J/m from 9 Wt.%, 9 Wt.% and 0 Wt.% of hybrid fillers loading, respectively. Breaking energy was found maximum as 7.31 J in hybrid glass-jute hybrid fibre reinforced plastic composites with no filler loading and it was observed that filler loading was decreasing the impact strength of developed hybrid composites. Shrinkage and its variations in the diameter of the finally developed cylindrical shape composites were observed after cooling and solidification. Scanning electron microscopy was used to observe the internal cracks, bonding of fibres and resin, voids, etc. Originality/value Development of hybrid filler based novel eco-friendly bio-composites and its experimental investigation on the impact strength, tensile strength and compressive strength has not been attempted yet.


2014 ◽  
Vol 660 ◽  
pp. 588-592 ◽  
Author(s):  
Shahruddin Mahzan ◽  
Wahieda M. Bahtiar ◽  
Zaleha Mohamad

Natural fibres offer environmental benefits such as biodegradable and can be obtained from renewable resources. However, there is lack of investigations done to characterize and compare different types and orientation done on the natural fibres. This paper determines the tensile strength of sugar palm fibres under various treatment processes. The composites were fabricated using woven sugar-palm fibre treated with alkali and acid and used epoxy resin as the matrices for the composite. The tensile test was done to determine the tensile strength of the composite and the surface morphological analysis was done using SEM. The results demonstrated that the composite with the alkali treated fibres produced higher tensile strength compared to untreated and acid treated fibres. With these properties, it shows that treated woven sugar-palm fibre composite can withstand high stress load during operation compared to untreated fibres reinforced composites.


This study presents the experimental investigation carried out to study the mechanical properties of concrete with and without the addition of fibres to it.d Concrete is the most consumed material in the world which has the property of strong in compression and weak in tension. Also plain concrete possess very limited ductility and little resistance to cracking. Hence fibres are introduced in the concrete to improve the tensile strength & brittleness of the concrete. These fibres which are closely spaced and dispersed uniformly in the concrete arrest the micro and macro cracks and improve the tensile strength of concrete. Concrete admixed with such fibres are known as Fibre Reinforced Concrete. The combination of two (or) more fibres called as Hybridization is carried out in this work. M25 grade concrete is designed as per IS 10262:2009 with the volume fraction of 0-1.5%. The workability of the concrete is affected due to the addition of fibres and hence super plasticizers are added to the concrete. The fibres considered for the study are (i) Crimped Steel Fibre (0-1.5%) and (ii) Shortcut Glass Fibre (0.1-0.2%). The behaviour of the hybrid fibre reinforced concrete is investigated by conducting compressive strength test on cube specimen of size 150mmx150mmx150mm and split tensile strength test on cylinder specimen of size 150mm diameter and 300mm height. From the experimental results, the optimum fibre combinations for maximum compressive strength and spilt tensile strength of concrete are identified.


2015 ◽  
Vol 761 ◽  
pp. 584-588
Author(s):  
Nurul Farah Adibah Mohd ◽  
Taufik Roni Sahroni ◽  
Mohammad Hafizudin Abd Kadir

This paper present the investigation of sandwich model in the view of its properties. The objective of this paper is to define the mechanical properties of LM6 model and sandwich model. In recent years, researchers have viewed polymer matrix composite (PMC) as a potential material to increase the overall performance of materials for various type of field. This paper focused on the sandwich design by using metal material as the skin. The simulation study by using SolidWorks software is the simulation process used in this research to determine the stress, displacement and factor of safety of the design base. The purpose of design analysis in this paper is to prove the distribution data of simulation by indicating the maximum and minimum value of the design. In this research, LM6 materials used as the skin to introduced the kenaf-fibre composite in the sandwich design. LM6 is aluminium casting alloy which has tensile strength until 190MPa and its ductility properties enable to modify the shape by using casting process. The natural fibre has been used in this paper is kenaf-fibre due to its high tensile strength at 930MPa with 53GPa for the young modulus value. Two models are design for simulation study which is LM6 model and kenaf-fibre-LM6 model. These are to found out the characteristic between these two models.


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