scholarly journals Pengaruh Lama Perendaman Fiber Reinforced Composite dengan Fiber Sisal (Agave sisalana) Terkalissai dalam Saliva Buatan Terhadap Perubahan Dimensi

2018 ◽  
Vol 7 (1) ◽  
pp. 22
Author(s):  
Diva Agrita Dentisia Wibowo ◽  
Widjijono Widjijono ◽  
Widowati Siswomihardjo

Fiber reinforced composite is a material composed of matrix and reinforced by fiber. Fiber sisal is a natural fiber an alternatives synthetic fiber developed as dental material. Resin composite matrix is a hydrophilic substance that cause dimensional change. Alkalization of sisal fiber reduces the ability of hydrophilic sites which affects the dimensional changes. The aim of this study was to determine how different period of immersion affect dimensional change in samples. The samples used in this research were FRC made from flowable resin composite (Master Flow, Brazil), and alkalized sisal fiber. The samples were shaped into cuboid measuring 25x2x2 mm. Fiber was placed in the middle of sample with continuous unidirectional direction and then irradiated for 20 seconds using LCU. A total of 16 samples were divided to 4 groups, each group with the  different period of immersion 0, 7, 14 and 21 days respectively. Dimensional changes were measured by the final dimension minus the initial dimension. Dimensional change was measured by the length, width, and height using digital sliding caliper with 0.001 mm nonius. The samples were immersed in the artificial saliva with pH 7. The data was analyzed using one way Anova and followed by LSD0.05. The result shows the mean value and standard deviation of dimensional changes with period of immersion at 0, 7, 14 and 21 days were 0.264±0.085, 2.856±0.089, 4.417±0.115 and 4.294±0.087 mm3. The F  value  obtained from one way Anova was 1.640±103 and the significance was 0.001 (p<0.05), indicated a significance difference. LSD presented a significance difference of mean to all treat,ent except for 14th and 21th day. This study concluded that various period of immersion increase effect to the dimensional changes of FRC with alkalized fiber sisal.

Nowadays, Natural Fiber Reinforced composites (NFCs) are emerging to be a good substitute for synthetic fiber reinforced composites as NFCs have many advantages such as low density, high specific strength, recyclability, low cost and good sound abatement quality etc. Among all types of NFCs, a vast study has been done on banana fiber and kenaf fiber reinforced composite. However, only limited work has been done on the banana fabric, kenaf fiber reinforced composite and the effect of their hybridization on mechanical properties. In this paper, an attempt has been made to study the mechanical properties of the banana fabric, kenaf fiber and hybrid banana fabric/kenaf fiber reinforced composites. Effect of alkali treatment on kenaf fiber reinforced composite is discussed in the paper. For the present work, plain-woven banana fabric and randomly oriented kenaf fiber are used as reinforcement while the epoxy resin is used as a matrix. samples are fabricated using hand lay-up and vacuum bagging method. Curing is done at ambient temperature (250C-300C) for 48h. Tensile, impact and hardness test has been performed on a specimen according to ASTM standards. Improvement in mechanical properties is observed after alkali (6% NaOH) treatment on kenaf fiber reinforced composite. Tensile testing behavior of randomly oriented kenaf fiber composite has been studied using Finite element method and results are compared with experimental investigations. This topic present big potential because it seeks to find solution for sustainable development with environmental concerns.


2018 ◽  
Vol 7 (2.31) ◽  
pp. 208 ◽  
Author(s):  
Deenadayalan . ◽  
S Sivakuma ◽  
R Vishnuvardhan ◽  
R Sathish Kumar

In recent years, natural fiber based hybrid composite materials have replaced many conventional metals and synthetic resin composites in many applications. The natural fibers serve better in the present unsustainable environment due to their properties. The waste wood particles from saw mill can also be added as reinforcement element in the matrix. Hence, to enhance the strength of the composite, fine teak wooden particles are mixed with the composite matrix material. The aim of this work is to develop hybrid fiber reinforced composite with waste teak wooden particles with optimum properties. Therefore it can replace the existing synthetic fiber reinforced composite material for a suitable application. In this work, epoxy resin has been reinforced with the hybrid fibers (Banana, Hemp and E-glass) to develop fiber reinforced plastic (FRP) with a weight ratio of 1:2 hand lay-up technique. The thickness of the composite specimen is obtained by laying up layer of fiber and matrix with wood particle. An experimental investigation of tensile, flexural, impact strength and water absorption capacity of the B-H-G Teak wood particle hybrid composite laminates have been carried out according to the ASTM standard of the composite laminates.  


Author(s):  
Snehlata Pandey ◽  
Atul Kumar Tiwari

The development of natural resources occurs due to biodegradability, ecofriendly and good strength to weight ratio in the engineering products. Natural fiber is obtained from various parts of the plant such as bast, leaf, seed, fruit, stalk, grass etc. In the present work take an overview of the characterization of the BF like failure mechanism, manufacturing process & overall properties. It deals with the potential energy absorbed by the natural fiber reinforced composite material. NFRC material replaced the various synthetic fiber. According to the literature survey the various work was carried out on the BF which shows its importance comparatively with the other fiber extract from the plant. BF is used as the reinforcement and thermoset epoxy used as matrix


2017 ◽  
Vol 867 ◽  
pp. 29-33 ◽  
Author(s):  
A. Saravana Kumar ◽  
P. Maivizhi Selvi ◽  
L. Rajeshkumar

Natural fiber composites are presently replacing the synthetic fiber in many fields. The present research work study is an attempt to manufacture and test the sisal/banana fiber reinforced polymer composites. Composite have been manufactured using banana and sisal fiber along with epoxy resin as reinforcement. With these composites drilling has been carried out to study the factors and combination of factors that influence the delamination of drilled unidirectional sisal-banana fiber reinforced composites. Drilling experiments were performed based on the L9-Taguchi method. Delamination factor evaluated for the selected parameters spindle speed, feed and diameter of the drill tool with the help of signal to noise ratio, ANOVA analysis and to obtain the conditions for minimum delamination.


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