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Natural and Artificial Fiber-Reinforced Composites as Renewable Sources

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ISBN: 9781789230604 9781789230611 Year: Pages: 138 DOI: 10.5772/intechopen.68740 Language: English
Publisher: IntechOpen
Subject: Technology (General) --- General and Civil Engineering --- Materials
Added to DOAB on : 2019-10-03 07:51:51

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Nano- and micro-sized natural fibers of vegetable origin are fully biodegradable in nature. However, the nano- and micro-sized synthetic fibers are fully man-made. Fiber-reinforced composites composed of stiffened fiber and matrix are well-known engineering materials. Fiber-reinforced materials have been used in industrial production. Natural fibers can be obtained from many sources in nature such as wool, sisal, ramie, kenaf, jute, hemp, grass, flax, cotton, coir, bamboo and abaca, banana, and sugarcane bagasse. Artificial fibers have been produced from more stiff materials such as glass, single-walled carbon nanotubes, double-walled carbon nanotubes, carbon, aramid, boron and polyethylene (PE). The cyclic reusability of materials is an important qualification in protecting the environment from waste pollution. Three important factors can be mentioned in terms of material properties in the recycling process. The first factor is ""the rate of cyclic usage,"" the second one is ""less material loss in each recycle,"" and the last one is ""the role of waste products in the self-renewal of ecosystem."" In engineering area, the usage of waste materials has taken into account in production of composite materials. The use of waste materials as particulate-type composite production is also possible in the industry. Fiber-reinforced materials can be grouped into two categories: ""the natural fiber-reinforced materials"" and ""the artificially produced fiber-reinforced materials."" Finally, we conclude that this book consists of mainly summarized three subject headings within the two specific book subsections : The first group contains the main subjects related to the natural and artificial fibers obtained by literature review; second, experimental and numerical studies are made in order to perform the necessary arrangements in the production stages and to establish a decision mechanism on the specification of the technical properties of the fiber-reinforced composites. The third group of studies focused on the use of sustainable bio-composites and recycled textile wastes as reinforcements in construction.

Elasticity of Materials - Basic Principles and Design of Structures

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ISBN: 9781789849271 9781789849288 Year: Pages: 106 DOI: 10.5772/intechopen.71471 Language: English
Publisher: IntechOpen
Subject: General and Civil Engineering
Added to DOAB on : 2019-10-03 07:51:52

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In the science of physics, elasticity is the ability of a deformable body (e.g., steel, aluminum, rubber, wood, crystals, etc.) to resist a distorting effect and to return to its original size and shape when that influence or force is removed. Solid bodies will deform when satisfying forces are applied to them. Elasticity solution of materials will be grouped in forms of linear and nonlinear elasticity formulations. The main subject of this book is engineering elasticity and consists of five chapters in two main sections. These two main sections are ""General Theorems in Elasticity"" and ""Engineering Applications in Theory of Elasticity."" The first chapter of the first section belongs to the editor and is entitled ""Analytical and Numerical Approaches in Engineering Elasticity."" The second chapter in the first section is entitled ""A General Overview of Stress-Strain Analysis for the Elasticity Equations"" by P. Kumar, M. Mahanty, and A. Chattopadhyay. The first chapter of the second section is entitled ""FEA and Experimental Determination of Applied Elasticity Problems for Fabricating Aspheric Surfaces"" by Dr. D.N. Nguyen. The second chapter is entitled ""Concept of Phase Transition Based on Elastic Systematics"" by Dr. P.S. Nnamchi and Dr. C.S. Obayi. The third chapter is entitled ""Repair Inspection Technique Based on Elastic-Wave Tomography Applied for Deteriorated Concrete Structures"" by Dr. K. Hashimoto, Dr. T. Shiotani, Dr. T. Nishida, and Dr. N. Okude. Finally, this book includes the basic principles of elasticity and related engineering applications about theory and design.

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