A_Study_on_Modified_Mechanical_and_Wear_Characteristic_of_Epoxy_Particulate_Filled_Homegeneous_Compo

A_Study_on_Modified_Mechanical_and_Wear_Characteristic_of_Epoxy_Particulate_Filled_Homegeneous_Compo

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Siddhartha 1 e-mail: sid.fgm@gmail.com Amar Patnaik e-mail: amar_mech@sify.com Department of Mechanical Engineering, National Institute of Technology, Hamirpur 177005, India Alok Satapathy Department of Mechanical Engineering, National Institute of Technology, Rourkela 759008, India Amba D. Bhatt e-mail: amba_bhatt@yahoo.com Department of Mechanical Engineering, Motilal Nehru National Institute of Technology, Allahabad 211004, India A Study on Modifed Mechanical and Wear Characteristics oF Epoxy-Particulate ±illed Homogenous Composites and Their ±unctionally Graded Materials This article presents the investigations on modifed mechanical and wear characteristics oF cement kiln dust (CKD) reinForced homogeneous epoxy composites and its Functionally graded materials developed For tribological applications. CKD reinForced homogeneous and Functionally graded epoxy composites are developed by simple mechanical stirring and vertical centriFugal casting technique, respectively. Mechanical properties oF these graded composites are evaluated and compared with those oF homogenously flled epoxy composites. Sliding wear tests are conducted over a range oF sliding velocities (105–314 cm/s), normal loads (20–40 N), fller contents s 0–20 wt % d , and sliding distances (0.5–2 km). ±or this, a pin-on-disk machine and the design oF experiments approach using Taguchi’s orthogonal arrays are used. A theoretical model is proposed For estimating the sliding wear rates For homogeneous, as well as graded composites. The results Found From the theoretical model so proposed are Found to be in good agreement with the experimental values under similar test conditions. This study reveals that the presence oF cement kiln dust particles enhances the sliding wear resistance oF epoxy resin and the homogeneous composites suFFer greater wear loss than the graded composites. scanning electron microscopy micrograph confrms the graded dispersion oF CKD particles in the matrix. f DOI: 10.1115/1.4002543 g Keywords: cement kiln dust, Friction and wear, Functionally graded composites 1 Introduction Functionally graded materials s FGMs d belong to a class of composite materials, which are characterized by a compositional gradient from one location to another within a single component. These are materials that incorporate deliberately designed transi- tions in material’s composition and properties within a composite in preferred directions to optimize the overall performance of the component f 1 g . In contrast, traditional composites are homoge- neous mixtures and so involve a compromise between the desir- able properties of the component materials. They possess numer- ous advantages that make them more preferable in potential applications where potential reduction of in-plane and transverse through-the-thickness stress, an improved residual stress distribu- tion, enhanced wear resistance for tribological applications, and reduced stress intensity factors, etc., are required f 2 g . FGMs are useful in applications where a combination of high surface wear
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This note was uploaded on 02/24/2011 for the course AERO 520 taught by Professor Rs during the Spring '11 term at Istanbul Technical University.

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A_Study_on_Modified_Mechanical_and_Wear_Characteristic_of_Epoxy_Particulate_Filled_Homegeneous_Compo

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