Strength Analysis and Variation of Elastic Properties in Plantain Fiber/Polyester Composites for Structural Applications

2020 ◽  
Author(s):  
Christian Emeka Okafor ◽  
Christopher Chukwutoo Ihueze
Keyword(s):  
Elastic Properties ◽  
Strength Analysis ◽  
Structural Applications ◽  
Polyester Composites

A Review of Cord-Rubber Elastic Characteristics

1964 ◽  
Vol 37 (5) ◽  
pp. 1365-1390 ◽  
Author(s):  
Samuel K. Clark
Keyword(s):  
Stress Analysis ◽  
Internal Stress ◽  
Elastic Properties ◽  
The Body ◽  
Complex Nature ◽  
Pneumatic Tire ◽  
Analysis Techniques ◽  
Structural Applications ◽  
Elastic Characteristics ◽  
Reinforced Materials

Abstract The increased use of cord- and filament-reinforced materials in structural applications during the last few years has resulted in a greater interest in their elastic properties. In part the reason for this may be found by considering the basic nature of redundant structures, in which the loads carried by individual cords are determined to some extent by the elastic characteristics of the entire system. In such situations, a knowledge of elastic characteristics becomes important to structural design practice. As a second reason for increased attention to the elastic properties of such materials, one might cite the body of work which is now developing in the general area of filamentary reinforcement of materials. A knowledge of elastic characteristics is important in obtaining optimum reinforcement properties, and such studies inevitably lead to a clearer understanding of the internal stress-states of all reinforced materials. One result of all this activity is that much of the work done in the areas of fiberglass and whisker reinforcement increases the general understanding, in a broad way, of the action of cord-reinforced rubber since in many respects the problems are similar, although major differences do exist in the structure of the reinforcement itself. The elastic properties of cord-rubber materials are understood today much better than they were even ten or fifteen years ago. A great deal of this development has paralleled, and is well represented by, internal stress analysis techniques developed for what is perhaps the primary utilization of cord-reinforced rubber, namely, the pneumatic tire. In the case of the pneumatic tire, these stress analysis techniques have essentially followed three distinct phases. In the first, the anisotropic nature of such materials was completely ignored and loads and stresses were determined on the basis of assuming the materials to be isotropic or unreinforced. In the case of shell structures, this is the equivalent of calculating the statically determinate membrane stresses. In some cases such information was valuable and in a few instances it comprised a major portion of the effects being studied so that some reliance could be placed on such an analysis. However, in general, due to the complex nature of such reinforced materials, little faith can be given to analyses based on isotropic conditions.

Effects on Tensile and Morphology Properties of Casuarina equisetifolia Reinforced Unsaturated Polyester Composites

2013 ◽  
Vol 748 ◽  
pp. 211-215
Author(s):  
Borhan Nurulaini ◽  
Romli A.Z. ◽  
Mohd Hanafiah Abidin
Keyword(s):  
Tensile Strength ◽  
Tensile Test ◽  
Natural Fiber ◽  
Unsaturated Polyester ◽  
Casuarina Equisetifolia ◽  
Microscopy Technique ◽  
Morphological Studies ◽  
Structural Applications ◽  
Polyester Composites ◽  
Composite Samples

New knowledge in findings potential usage of natural fiber as new material in composite technology has been increased gradually in years and these natural fiber materials are well known as competent material which can become an alternative material to the conventional and synthetic materials for suitable applications. In this research, Casuarina equisetifolia leaf was used as bio-based fiber and unsaturated polyester composite as the matrix due to its natural surface roughness without any chemical treatment. The aim of this study was to investigate the effect of various weight loadings of Casuarina equisetifolia in unsaturated polyester composites on the tensile test and morphological studies. The composite samples were fabricated by using press machine with mould dimension of (15x15x0.3) cm. From the tensile test results, tensile strength of the composite samples decreases with the increment of Casuarina equisetifolia by weight loadings. The surface morphology of the fractures composite samples was then analyzed using the microscopy technique (SEM) and found the evidence of fractured fiber breakage and voids content of the samples. Base on the result obtained, the tensile strength at 30% up to 50% weight loading of Casuarina equisetifolia has the potential to be used in non-structural applications.

scholarly journals Experimental Investigation on Mechanical Properties of A/GFRP, B/GFRP and AB/GFRP Polymer Composites

2022 ◽  
Vol 58 (4) ◽  
pp. 28-36
Author(s):  
Velmurugan Natarajan ◽  
Ravi Samraj ◽  
Jayabalakrishnan Duraivelu ◽  
Prabhu Paulraj
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Flexural Strength ◽  
Glass Fiber ◽  
Polymer Composites ◽  
Fiber Reinforced ◽  
Gfrp Composites ◽  
Glass Fiber Reinforced ◽  
Structural Applications ◽  
Polyester Composites

This study aims to reveal the consequence of thickness reinforcement on Fiber Laminates (Polyester Resin, Glass Fiber, Aluminum, and Bentonite) and to see if it can enhance the mechanical properties and resistance of laminates. Glass fiber reinforced polymer composites have recently been used in automotive, aerospace, and structural applications where they will be safe for the application s unique shape. Hand layup was used to fabricate three different combinations, including Aluminium /Glass fiber reinforced polyester composites (A/GFRP), Bentonite/Glass fiber reinforced polyester composites (B/GFRP), and Aluminium&Bentonie/Glass fiber reinforced polyester composites (AB/GFRP). Results revealed that AB/GFRP had better tensile strength, flexural strength, and hardness than GFRP and A/GFRP. Under normal atmospheric conditions and after exposure to boiling water, hybrid Aluminium&Bentonite and glass fiber-reinforced nanocomposites have improved mechanical properties than other hybrid composites. After exposure to temperature, the flexural strength, tensile strength and stiffness of AB/GFRP Composites are 40 % higher than A/GFRP and 17.44% higher than B/GFRP Composites.

Development of diamond-like-carbon coated abaca-reinforced polyester composites for hydrophobic and outdoor structural applications

2015 ◽  
Vol 72 (11) ◽  
pp. 2797-2808 ◽  
Author(s):  
Abdul Wasy Zia ◽  
Atta Ur Rehman Shah ◽  
Seunghun Lee ◽  
Jung Il Song
Keyword(s):  
Diamond Like Carbon ◽  
Structural Applications ◽  
Carbon Coated ◽  
Polyester Composites

scholarly journals Study thermo-mechanical properties of polyester composite reinforced by ceramic particles, SiC

2018 ◽  
Vol 225 ◽  
pp. 01021 ◽  
Author(s):  
Falak O. Abas ◽  
Raghad Usama Abass
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Impact Strength ◽  
Low Cost ◽  
Natural Fibers ◽  
Strength Properties ◽  
Thermal And Mechanical Properties ◽  
Weight Percentage ◽  
Structural Applications ◽  
Polyester Composites

Development of the Polymer Composites with natural fibers and fillers as a sustainable alternative material for some engineering applications, particularly in aerospace applications and automobile applications are being investigated. Lightweight and biodegradability and low cost Polyester composites are synthesised with an addition of Silicon carbide (SiC) particles by varying weight percentage (0, 3, 6, 10, 13, and 16 wt. %) respectively by using hand- layup technique followed by cold moulding. The prepared specimens were cut according to ASTM standard to determine hardness, impact strength, bending distortion and thermal conductivity properties. Afterward, the thermal and mechanical properties of all the unfilled and particulate filled composites are also evaluated for structural applications, i.e., hardness, impact strength, bending distortion, are determined with the change in filler content to notice the behaviour of composite material subjected to loading in addition to thermal conductivity property. Thermo-mechanical properties of the material are measured with the help of testing machines above according to their ASTM. It is found that the strength properties are greatly influenced by addition of this ceramic filler. Also shows that the thermal and mechanical properties of SiC-filled polyester composites are better than unfilled base composites

scholarly journals Micro-structural analysis and elastic properties of oil palm trunk fibre reinforced polyester composites

2018 ◽  
Vol 16 (2) ◽  
Author(s):  
Anthony N. Anyakora ◽  
Oladiran K. Abubakre
Keyword(s):  
Elastic Properties ◽  
Cross Sections ◽  
Oil Palm ◽  
Fibre Composite ◽  
Engineering Application ◽  
Fibre Content ◽  
Micro Structure ◽  
Oil Palm Trunk ◽  
Treatment Processes ◽  
Polyester Composites

This work addressed the study of development of micro-structure as related elastic properties in oil palm trunk fibre reinforced polyester composites. The results show that the Modulus of Elasticity value for the treated oil palm trunk fibre laminate was 67.43MPa at 70% fibre content, while the Modulus of Rigidity was 335.76MPa at 70% fibre content. The cross-sections of the specimens examined by Scanning Electron Microscopy indicated that the failure pattern of treated fibre composites was gradual, and related to the stiffness prominence. It was deduced that the knowledge of relationship between micro-structure and elastic properties could compliment the findings of effect of fibre loading, alkaline and silane treatment processes in the utilization of oil palm trunk fibre composite for any desired engineering application.

Lattice Imaging of Grain Boundaries in Ceramics

1977 ◽  
Vol 35 ◽  
pp. 114-115
Author(s):  
D. R. Clarke ◽  
G. Thomas
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Silicon Nitride ◽  
Grain Boundaries ◽  
High Temperature Strength ◽  
Current Interest ◽  
Lattice Imaging ◽  
Special Significance ◽  
Structural Applications ◽  
Refractory Ceramics

Grain boundaries have long held a special significance to ceramicists. In part, this has been because it has been impossible until now to actually observe the boundaries themselves. Just as important, however, is the fact that the grain boundaries and their environs have a determing influence on both the mechanisms by which powder compaction occurs during fabrication, and on the overall mechanical properties of the material. One area where the grain boundary plays a particularly important role is in the high temperature strength of hot-pressed ceramics. This is a subject of current interest as extensive efforts are being made to develop ceramics, such as silicon nitride alloys, for high temperature structural applications. In this presentation we describe how the techniques of lattice fringe imaging have made it possible to study the grain boundaries in a number of refractory ceramics, and illustrate some of the findings.

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