Failure mode maps of natural and synthetic fiber reinforced composite sandwich panels

2017 ◽  
Vol 94 ◽  
pp. 217-225 ◽  
Author(s):  
Juan Pablo Vitale ◽  
Gaston Francucci ◽  
Jian Xiong ◽  
Ariel Stocchi
Keyword(s):  
Failure Mode ◽  
Sandwich Panels ◽  
Synthetic Fiber ◽  
Fiber Reinforced ◽  
Fiber Reinforced Composite ◽  
Composite Sandwich Panels ◽  
Composite Sandwich ◽  
Reinforced Composite ◽  
Natural And Synthetic

scholarly journals Experimental Study on Bending Performance of Composite Sandwich Panel with New Mixed Core

2019 ◽  
Vol 275 ◽  
pp. 02018
Author(s):  
Jing Zhang ◽  
Xiamin Hu ◽  
Wan Hong ◽  
Bing Zhang ◽  
Chengli Zhang
Keyword(s):  
Experimental Investigation ◽  
Polyurethane Foam ◽  
Failure Mode ◽  
Shear Failure ◽  
Sandwich Panels ◽  
Tensile Failure ◽  
Bending Test ◽  
Bending Performance ◽  
Composite Sandwich Panels ◽  
Composite Sandwich

This paper presents an experimental investigation of bending performance of composite sandwich panels with new mixed core, sandwich panels were tested by four-point bending test. Parametric study was conducted to investigate the influence of different core materials on the failure mode, ultimate bearing capacity, stiffness and ductility of composite sandwich panels. The results of the experimental investigation showed that the mixed core can change the failure mode of sandwich panels. The failure mode of wooden panels is characterized by tensile failure of bottom wood, and the failure mode of composite sandwich panels with wood core is that the surface layer and core are stripped and the webs are damaged by shear, while the failure mode of composite sandwich panels with wood and polyurethane foam mixed core is the shear failure of the web. Composite sandwich panels with GFRP-wood-polyurethane foam core have better bending performance and can effectively reduce the weight of panels.

scholarly journals Mechanical Properties of Banana Fabric and Kenaf Fiber Reinforced Epoxy Composites: Effect of Treatment and Hybridization

2019 ◽  
Vol 8 (10) ◽  
pp. 1870-1874
Keyword(s):  
Mechanical Properties ◽  
Natural Fiber ◽  
Fiber Composite ◽  
Fiber Reinforced Composites ◽  
Synthetic Fiber ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Kenaf Fiber ◽  
Fiber Reinforced Composite ◽  
Reinforced Composite

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.

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
Keyword(s):  
Natural Fiber ◽  
Resin Composite ◽  
Dimensional Change ◽  
Synthetic Fiber ◽  
Sisal Fiber ◽  
Fiber Reinforced ◽  
Fiber Reinforced Composite ◽  
Dimensional Changes ◽  
Reinforced Composite ◽  
One Way Anova

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.

Flexural studies on Basalt Fiber Reinforced Composite sandwich panel with profile sheet as core

2015 ◽  
Vol 82 ◽  
pp. 391-400 ◽  
Author(s):  
Smriti Raj ◽  
V. Ramesh Kumar ◽  
B.H. Bharath Kumar ◽  
Smitha Gopinath ◽  
Nagesh R. Iyer
Keyword(s):  
Sandwich Panel ◽  
Basalt Fiber ◽  
Fiber Reinforced ◽  
Fiber Reinforced Composite ◽  
Composite Sandwich ◽  
Reinforced Composite
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