scholarly journals Strengthening of RC Beam using Numerous Natural Fibre Laminates - a Review

2019 ◽  
pp. 394-399
Author(s):  
Sowndharya D ◽  
Kathirvel M ◽  
Yuvaraj K
Keyword(s):  
Reinforced Concrete ◽  
Composite Laminates ◽  
Natural Fiber ◽  
Fiber Composite ◽  
Natural Fibers ◽  
Strength Properties ◽  
Flexural Behavior ◽  
Sisal Fiber ◽  
Reinforced Concrete Structure ◽  
Fiber Flax

Nowadays natural fibers are getting attention from researchers and scholars to use it for construction of buildings because of their sustainability and eco friendly nature. There are various natural fibers like bamboo, sugarcane fiber, coconut coir, sisal fiber, flax fiber etc., are available for construction. Aim of this paper is to give a detailed study about various experiments conducted on the reinforced concrete structure that are strengthened with fiber laminate. The failure load, ductility, crack pattern, strength properties, flexural behavior of reinforced concrete beam, viscous and mechanical properties and strain characteristics of strengthened beams with different natural fiber composite laminates are reviewed. The result shows that the strength, ductility and durability properties of concrete are increased according to their proportions.

scholarly journals Mechanical Behavior of Natural Fiber Composite Material

2021 ◽  
Author(s):  
Vikas Ghanwat ◽  
Jivan Mule ◽  
Saurabh Telore ◽  
Vijay Bhosale ◽  
Sudarshan Patale
Keyword(s):  
Mechanical Properties ◽  
Epoxy Resin ◽  
Composite Laminates ◽  
Fiber Length ◽  
Strain Energy ◽  
Natural Fiber ◽  
Fiber Composite ◽  
Natural Fibers ◽  
Industrial Applications ◽  
Coir Fiber

The use of natural fibers as reinforcement in polymeric composites is increasing thanks to the improvements in properties that fibers can provide to the merchandise. Composites materials were prepared by compression molding technique with hand layup process. Treatment of fiber with 2% NaOH was carried out in order to improve the interfacial bonds between fiber and matrix leading to better mechanical properties of the spathe-fiber-reinforced composite laminates. Filler loading as 5% by volume of coir fiber or epoxy resin composites have been formulated. The fiber length was chosen as 5mm, 10mm & 15mm and the ratio of epoxy resin: hardener was maintained as 10:0.8. A total three plates with dimension as 300 mm х 300 mm х 4 mm were produced and specimens as per the varied ASTM standard were tested to determine the ultimate tensile strength, strain energy, flexural strength, strain energy and micro hardness value for different configuration. It was observed that the lastingness of epoxy resin/ coir fiber composites was maximum at 15mm fiber length (16.27 N/mm2). The charpy notch impact strength was also maximum at 15mm fiber length (10.87 kJ/m2). The results show good mechanical properties and hint us as a replacement for conventional materials in industrial applications.

Tensile and Statistical Analysis of Sisal Fibers for Natural Fiber Composite Manufacture

2015 ◽  
Vol 1115 ◽  
pp. 349-352 ◽  
Author(s):  
Md. Masudur R. Abir ◽  
S.M. Kashif ◽  
Md. Abdur Razzak
Keyword(s):  
Tensile Strength ◽  
Statistical Analysis ◽  
Natural Fiber ◽  
Fiber Composite ◽  
Natural Fibers ◽  
Young Modulus ◽  
Gage Length ◽  
Sisal Fiber ◽  
Natural Fiber Composite ◽  
Sisal Fibers

To achieve sustainability in the composite industry, natural fibers must be able to replace synthetic fibers .In this work the tensile properties of sisal fibers were determined. The relationships between tensile strength, young modulus, failure to strain and gage length was studied. Also variation in tensile strength was quantified using statistical analysis. The relationship between Weibull statistics and gage length were also investigated. The strength of the sisal fiber obtained in this work was between 255-377 MPA and decreased with an increase in gage length. The Weibull modulus obtained was similar for all gage lengths and was around 2.5.

A Review: Natural Fiber as Reinforcement in Waste Paper Recycling and its Processing Methods

2013 ◽  
Vol 315 ◽  
pp. 443-447 ◽  
Author(s):  
S.K.A. Saferi ◽  
Y. Yusof
Keyword(s):  
Natural Fiber ◽  
Natural Fibers ◽  
Strength Properties ◽  
Hibiscus Cannabinus ◽  
Waste Paper ◽  
Kenaf Fiber ◽  
Healthy Environment ◽  
Wide Range ◽  
Increased Strength ◽  
The Right

As demand for clean and healthy environment, people make many alternate solutions to save the environment. To save trees and overcome landfill of waste material and waste disposal by burning activities issues (cause to losing energy and increase pollution), people nowadays take recycling as a recovery. Recycling waste paper into new product increased over the years. Shortage of wood supply required new sources of natural fiber for papermaking industry. Many researchers have studied new sources of natural fibers from non wood materials, such as oil palm residues, kenaf (Hibiscus Cannabinus), pineapple leaf, banana, and coconut fiber. Kenaf is choose as reinforcement agent for recycled waste paper to maximize the use of kenaf in industry application due its wide range of advantages where pineapple leaf are choose as reinforcement agent because abundantly of these material in Malaysia. Reinforcement of natural fiber into waste paper during recycling process expected to increased strength properties of final product. To understand the right and suitable processing method for kenaf fiber and pineapple leaf leaves previous work from other researchers are studied to investigate pulping procedure of natural fiber and its effect on mechanical strength.

Cotton-Epoxy Composites: Development and Mechanical Characterization

2011 ◽  
Vol 471-472 ◽  
pp. 291-296 ◽  
Author(s):  
Piyush P. Gohil ◽  
A.A. Shaikh
Keyword(s):  
Natural Fiber ◽  
Volume Fraction ◽  
Fiber Composite ◽  
Natural Fibers ◽  
High Strength ◽  
Data Availability ◽  
Sem Images ◽  
Feasible Range ◽  
Set Up ◽  
Natural Fiber Composite

Composites are becoming essential part of today’s material because they offer advantages such as low weight, corrosion resistance, high fatigue strength; faster assembly etc. composites are generating curiosity and interest all over the worlds. The attempts can be found in literature for composite materials high strength fiber and also natural fiber like jute, flax and sisal natural fibers provides data but there is need of experimental data availability for unidirectional natural fiber composite with seldom natural fiber like cotton, palm leaf etc., it can provide a feasible range of alternative materials to suitable conventional material. It was decided to carry out the systematic experimental study for the effect of volume fraction of reinforcement on longitudinal strength as well as Modulus of Elasticity (MOE) using developed mould-punch set up and testing aids. The testing is carried out as per ASTM D3039/3039M-08. The comparative assessment of obtained experimental results with literature is also carried out, which forms an important constituent of present work. It is also observed through SEM images and theoretical investigations that interface/interphase plays and important role in natural fiber composite.

scholarly journals SIFAT MEKANIS SERAT ENCENG GONDOK SEBAGAI MATERIAL KOMPOSIT SERAT ALAM YANG BIODEGRADABLE

2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Sri Hastuti ◽  
Catur Pramono ◽  
Yafi Akhmad
Keyword(s):  
Immersion Time ◽  
Natural Fiber ◽  
Fiber Composite ◽  
Natural Fibers ◽  
Ethanol Solution ◽  
Machining Process ◽  
Single Fiber ◽  
Glass Fiber Composite ◽  
Treatment Type ◽  
Eichornia Crassipes

The Eichornia crassipes fiber have potentially as a composite reinforcing material. The advantage of composites with natural fibers like to light weight, corrosion resistance, water resistance, attractive performance, and without machining process. The purpose of using natural fiber as an alternative material to replace glass fiber composite material with Eichornia crassipes fibers are friendly and cheap. The research material used Eichornia crassipes fiber, NaOH, Etanol, and H2O. Processing of Eichornia crassipes fiber is washing with water, natural drying ± 10 days in eviromental, fiber taking with steel brush. Dry fibre were subjected to 10%, 20%, 30% NaOH and ethanol solution with variations of immersion time of 2, 4, 6 hours, neutralization with H20, and drying at room temperature. The Single fiber tensile test specimens were made with variations of treatment type in NaOH and Ethanol solution (10%, 20%, 30%), immersion time of 2, 4, and 6 hours. Single fiber test specimens refer to standard ASTM D 3379. Optimum tensile strength test results on NaOH treatment 20% variation of immersion time 4 hours: 28.402 N / mm2 and on ethanol treatment 20% variation of immersion time 2 hours: 48.197 N / mm2.

scholarly journals Effect of Graphene Oxide Coating on Natural Fiber Composite for Multilayered Ballistic Armor

Polymers ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1356 ◽  
Author(s):  
Ulisses Oliveira Costa ◽  
Lucio Fabio Cassiano Nascimento ◽  
Julianna Magalhães Garcia ◽  
Sergio Neves Monteiro ◽  
Fernanda Santos da Luz ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Natural Fiber ◽  
Fiber Composite ◽  
Natural Fibers ◽  
Oxide Coating ◽  
Synthetic Fibers ◽  
Comparable Performance ◽  
Strong Candidate ◽  
Natural Fiber Composite ◽  
Curauá Fiber

Composites with sustainable natural fibers are currently experiencing remarkably diversified applications, including in engineering industries, owing to their lower cost and density as well as ease in processing. Among the natural fibers, the fiber extracted from the leaves of the Amazonian curaua plant (Ananas erectifolius) is a promising strong candidate to replace synthetic fibers, such as aramid (Kevlar™), in multilayered armor system (MAS) intended for ballistic protection against level III high velocity ammunition. Another remarkable material, the graphene oxide is attracting considerable attention for its properties, especially as coating to improve the interfacial adhesion in polymer composites. Thus, the present work investigates the performance of graphene oxide coated curaua fiber (GOCF) reinforced epoxy composite, as a front ceramic MAS second layer in ballistic test against level III 7.62 mm ammunition. Not only GOCF composite with 30 vol% fibers attended the standard ballistic requirement with 27.4 ± 0.3 mm of indentation comparable performance to Kevlar™ 24 ± 7 mm with same thickness, but also remained intact, which was not the case of non-coated curaua fiber similar composite. Mechanisms of ceramic fragments capture, curaua fibrils separation, curaua fiber pullout, composite delamination, curaua fiber braking, and epoxy matrix rupture were for the first time discussed as a favorable combination in a MAS second layer to effectively dissipate the projectile impact energy.

scholarly journals Tribology of Natural Fibers Composite Materials: An Overview

Lubricants ◽  
2020 ◽  
Vol 8 (4) ◽  
pp. 42 ◽  
Author(s):  
Marko Milosevic ◽  
Petr Valášek ◽  
Alessandro Ruggiero
Keyword(s):  
Composite Materials ◽  
Friction And Wear ◽  
Natural Fiber ◽  
Fiber Composite ◽  
Natural Fibers ◽  
Industrial Applications ◽  
Tribological Characteristics ◽  
Future Research ◽  
Wide Range ◽  
Mechanical And Tribological Characteristics

In the framework of green materials, in recent years, natural fiber composites attracted great attention of academia and industry. Their mechanical and tribological characteristics, such as high strength, elasticity, friction, and wear resistance, make them suitable for a wide range of industrial applications in which issues regarding a large amount of disposal are to be considered since their environmental friendliness gives them an advantage over conventional synthetic materials. Based on the recent and relevant investigations found in the scientific literature, an overview focused on the tribological characteristics of composite materials reinforced with different types of natural fibers is presented. The aim is to introduce the reader to the issues, exploring the actual knowledge of the friction and wear characteristics of the composites under the influence of different operating parameters, as well as the chemical treatment of fibers. The main experimental tribological techniques and the main used apparatus are also discussed, with the aim of highlighting the most appropriate future research directions to achieve a complete framework on the tribological behavior of many possible natural fiber composite materials.

Fabrication and Testing of Abaca Fibre Reinforced Epoxy Composites for Automotive Applications

2013 ◽  
Vol 718-720 ◽  
pp. 63-68 ◽  
Author(s):  
Raja R. Niranjan ◽  
S. Junaid Kokan ◽  
R. Sathya Narayanan ◽  
S. Rajesh ◽  
V.M. Manickavasagam ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Natural Fiber ◽  
Fibre Composite ◽  
Fiber Composite ◽  
Salt Water ◽  
Natural Fibers ◽  
Natural Fibre ◽  
Industrial Applications ◽  
Vertical Orientation ◽  
The Matrix

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.

Sign in / Sign up

Export Citation Format

Share Document