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739 articles for “physical”
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An Overview of Ceramic Matrix Composite
Abstract: Ceramic materials often exhibit a combination of useful physical and mechanical properties, including high refractoriness, but their applications are restricted due to their brittle behaviour; in an attempt to improve the strength, and particularly the toughness, of brittle ceramics particle-strengthening and fibre-reinforcement have been utilized, with limited success. The factors which affect the mechanical properties of these composite systems are discussed, and the various experimental systems that have been investigated …
Published in International Journal of Composite Materials and Matrices · Vol. 3, Issue 1, 2017 · pp. 23–26 Read article
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A Model for Plastic-Hydrolytic Damage Bioresorbable Polymer Composites
Abstract: This paper explains and assesses a recently developed constitutive model for elastic-damage that may sustain plastic-hydrolytic damage. When a metallic material is subjected to plastic strain, voids and microcracks in the metal matrix start to form, develop, and merge. This is what causes ductilitydegradation in metals. Only a few of the many models that have been presented to depict ductile failure have done a thorough analysis of the entire damage …
Published in International Journal of Composite Materials and Matrices · Vol. 8, Issue 1, 2022 · pp. 23–27 Read article
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Effects of Coupling Agent and Nanoclay on the Mechanical, Morphological and Dimensional Stability of Natural Fiber/Polypropylene Composites
Abstract: Polymer nanocomposite is made up of polymer as a matrix ingredient and reinforcement ingredient as a filler in the form of nanometer particles. These ingredients have dissimilar physical and chemical features and are mixed to generate sole features of nanocomposites. Polypropylene (PP) was nominated as the polymer matrix ingredient. Reinforcement ingredients used include organically modified montmorillonite with natural fiber. Various composites based on polypropylene, natural fiber, and organically modified montmorillonite …
Published in International Journal of Composite Materials and Matrices · Vol. 8, Issue 1, 2022 · pp. 9–18 Read article
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The Potential Application of Walnut Shells as Biofillers for Natural Rubber Composites
Abstract: It was evaluated whether walnut shells should be used as filler in composites made of natural rubber. Samples of walnut shells were ground to fine powders, sieved through a 75 μm mesh, and were used in compounding natural rubber using varying filler loading of unfilled, 20 hpr, 30 hpr, 40 hpr, and 50 hpr. The physicochemical analysis results of the walnut shell powder were 5.30, 10.10%, 2.50%, 43.70%, 49.70 mg/g, …
Published in International Journal of Composite Materials and Matrices · Vol. 8, Issue 2, 2022 · pp. 30–34 Read article
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Green Adhesive—Using Glyoxalated Lignin and Hydrogenated Resin as Ecologically Safe Wood Adhesive for Interior Plywood
Abstract: Petroleum-based adhesive such as urea formaldehyde and phenol formaldehyde resin dominates adhesive market which releases formaldehyde and VOC to the environment. The purpose of this study is to develop an adhesive based on isocyanate in combination with compounds from renewable sources like lignin, protein and starch. Adhesive formulation was developed by incorporation of hydrogenated resin, corn starch/PVOH emulsion with glyoxalated lignin (GL) and evaluation properties of the adhesive with plywood …
Published in International Journal of Polymer Science and Engineering · Vol. 1, Issue 1-2, 2015 · pp. 23–27 Read article
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A Review on the Properties of Polymeric Micelles
Abstract: Lately, polymeric micelles have pulled in a considerable measure of consideration as far as their particular conveyance of hydrophobic payload to the objective site. Polymeric micelles are viewed as more steady than their surfactant partners and can drag out flow times in vivo and their particular gathering in the tumoral tissues. They can viably solubilize little hydrophobic medications in their internal most hydrophobic center while their external hydrophilic shell can …
Published in International Journal of Polymer Science and Engineering · Vol. 3, Issue 1, 2017 · pp. 22–25 Read article
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Preparation and Evaluation of Plant-Based Coir Fiber-Reinforced Polypropylene Composites
Abstract: In the present article, unidirectional coir fiber (CF) and alkali-treated CF (ACF) were incorporated in polypropylene (PP) with and without 3-aminopropyl trimethoxy silane (AS) and tetramethoxy orthosilicate (TS) to produce composites by a compression molding technique. The basic properties of PP/CF composites (e.g. tensile strength, tensile modulus, impact strength, and water absorption) have enhanced with increasing CF content. The incorporation of AS and TS after alkali pretreatment for CF composites …
Published in International Journal of Polymer Science and Engineering · Vol. 7, Issue 2, 2021 · pp. 34–47 Read article
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Modification of Poly Vinyl alcohol by Grafting and Appropriate Blending for Higher Stability and Biomedical field Application
Abstract: PVA is a one of the most important vinyl polymer which is widely used in industrial applications. PVA polymer has excellent adhesive property, solubility in water and it is biodegradable. But when it is modified by appropriate crosslinking or grafting or blending techniques then its physical as well as stability is altered. When polymer is modified by blending with other materials then its degradability decreases but thermal stability increases. In …
Published in International Journal of Polymer Science and Engineering · Vol. 7, Issue 2, 2021 · pp. 27–33 Read article
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Study of Heavy Metal ion adsorption from Synthetic Wastewater with the help of biomass and analysis of Mathematical Model
Abstract: The biofilm matrix is a mixture of secreted polymers, metabolites and nutrients ingested, lysis solution products, and even particle debris. This matrix, which is polyanionic by nature, is essential for the activated carbon of metal cations. In this study, the heavy metal adsorption mechanism in biofilms is modelled in one spatial dimension. The numerical method is a free-boundary value issue for nonlinear parabolic and quadratic partial differential equations. Parabolic equations …
Published in International Journal of Polymer Science and Engineering · Vol. 8, Issue 1, 2022 · pp. 45–56 Read article
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Green Synthesis of Zinc Oxide (ZnO) Nanoparticles using Urtica dioica Plant Leaf Extract
Abstract: The green synthesis of nanoparticles by biological systems, particularly plant extracts, has become an emerging area of nanotechnologies. Nano materials have wide range application in various fields such as electronics, optics, material science and bio medical science due to their size and morphology. Zinc oxide is a versatile semiconductors material and has attractive properties like wideband gap (3.2eV) large exciton biding energy, high stability and environmental friendly material. The synthesis …
Published in International Journal of Polymer Science and Engineering · Vol. 8, Issue 2, 2022 · pp. 44–57 Read article
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A Literature Review on the Mechanical Properties of Banana Fiber Reinforced Polymer Composites
Abstract: The usage of composite materials and environmental contamination, as well as the utilization of renewable and biodegradable resources, are closely intertwined in today's rapidly developing world. An environmental researcher is hunting for sustainable materials. The forms and sizes of both natural and synthetic fibers are diverse. Researchers, engineers, and scientists have recently become interested in natural fibers as an alternative reinforcement for fiber-reinforced polymer composites. They are used to replace …
Published in International Journal of Polymer Science and Engineering · Vol. 8, Issue 2, 2022 · pp. 1–12 Read article
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100 Years of General Theory of Relativity
Abstract: The General Theory Relativity is the generalization of the Special Theory of Relativity. This theory certainly is one of the most extraordinary achievement of the scientific world till date. Einstein's discovery of General Theory of Relativity is itself series of dramatic incidents, from the beginning until it’s proven. The theory reviewed our understanding of gravity, light and time, and paved the way for many modern technologies. The observational evidence is …
Published in International Journal of Mechanics and Design · Vol. 2, Issue 1, 2016 · pp. 20–32 Read article
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Predictive Model on Constant Pressure Drop Variable: Area Fluid Flow System in a Pipe
Abstract: The effect of density, pressure drop, and orifice area was examined in this research. The basic equation developed to represent steady-state fluid flow is the Bernoulli equation which assumes that the total mechanical energy is conserved for steady incompressible, in viscid, isotherm flow with no heat transfer or work done. These restrictive conditions can actually be representative of many physical systems. The Bernoulli’s principle was applied in explaining the design …
Published in International Journal of Mechanics and Design · Vol. 4, Issue 1, 2018 · pp. 23–34 Read article
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An Optimized Design of the Standard Manual Wheelchair
Abstract: The manual wheelchair is commonly found in hospitals, rehabilitation centers, senior housing and airports for allowing patients, people with physical disabilities or for elderly people. Transferring mishaps are one of the major causes for injuries. Moreover, all the transferring actions between wheelchair and other surfaces are difficult for wheelchair users. This project is aimed at optimizing the existing design of a standard manual wheelchair by introducing a height adjusting mechanism …
Published in International Journal of Mechanics and Design · Vol. 5, Issue 2, 2019 · pp. 1–10 Read article
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Design and Performance Testing of Brown Grass Flower Broom Reinforced Composites
Abstract: Engineering materials are classified into many varies and composites are those which are finding their role in all modern day engineering applications. Composite materials are materials made of two basic components, polymer resins and fibers. It combines the physical properties and high mechanical properties of the fiber, as well as the appearance, adhesion and performance of the polymer. Here, we prefer brown grass flower brooms as our main fiber to …
Published in International Journal of Mechanics and Design · Vol. 6, Issue 2, 2020 · pp. 34–37 Read article
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Galerkin Method of Weighted Residual to Study on Enhanced Heat Transfer in Cylindrical Micro-Fins Heat Sink Using Artificial Surface Roughness
Abstract: In this paper, a theoretical investigation is carried out on the use of artificial surface roughness for enhanced heat transfer and thermal management of cylindrical micro-fins with artificial surface roughness. The developed thermal models which are solved using Galerkin method of weighted residual, considered variable thermal properties according to linear, exponential and power laws. The approximate analytical solutions are used to carry out parametric studies and to establish the thermal …
Published in International Journal of Manufacturing and Materials Processing · Vol. 4, Issue 2, 2018 · pp. 12–22 Read article
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Experimental Study and Analysis of Coefficient of Friction for Mild Steel Under Various Lubrication Conditions
Abstract: The coefficient of friction plays decisive role in the metal-forming processes. This study focuses on determination of the coefficient of friction between work piece and lubricants using ring compression test by experiments physical modeling and finite element (FE) simulation. A series of ring compression tests were carried out to obtain friction coefficients of mild steel under lubricants including boric acid, Vaseline, grease and dry conditions. According to Male and Cockcroft …
Published in International Journal of Manufacturing and Materials Processing · Vol. 4, Issue 2, 2018 · pp. 34–42 Read article
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A Review on Reduction of Scrap in Foundry by Using of Quality Control Tools
Abstract: Casting is one of the oldest manufacturing processes and is a primary manufacturing process. Products originating from castings are the input for many manufacturing processes such as forging, machining, rolling, wire drawing, extrusion, and welding. Therefore, the product made from casting should be a good quality product without defects or with minimum defects. Indeed, the quality of the products reduces as a reason of many process parameters such as molten …
Published in International Journal of Manufacturing and Materials Processing · Vol. 6, Issue 1, 2020 · pp. 6–17 Read article
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Analysis of Mechanical Attributes of Nano clay Reinforced Polymer Composites
Abstract: Composite material provide a Higher and unique mechanical and physical attributes because of its combines the most unique attributes of its composition while underlying their least advantageous attributes . Composites have been widely used in various application starting from aerospace , Manufacturing plants , Electrical equipment's , Marine , Automotive ,Civil Infrastructure , Corrosive Environment’s ,Whereas the Epoxy which are the cured components of two chemical functional group namely polyepoxides …
Published in International Journal of Manufacturing and Materials Processing · Vol. 7, Issue 1, 2021 Read article
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Design and Development of an Android Application for Online Grocery Shopping: A User- Centered Approach
Abstract: A quick and easy way for consumers to buy and manage their groceries is what the GroceryAndroid application study seeks to offer. Users of the programme will be capable of investigatinga large selection of products, make shopping lists, and make purchases using a security and user-friendly interface. The basic goal of the project is to provide a one-stop solution to manage theirgrocery needs while having to deal with the difficulty …
Published in International Journal of Computer Aided Manufacturing · Vol. 8, Issue 2, 2022 · pp. 26–31 Read article