Journal of Experimental & Applied Mechanics
Volume 7, Issue 2 (2016)
Published
Table of contents
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Analytical Determination of Deflection of Stepped Cantilever Rectangular Beam under Uniform load
Abstract: Deflection of a beam is not only an interest for the branch of civil engineering but it has extended to many other engineering branches. Prediction of deflection for non-prismatic section with different loading conditions is a core area for many researchers. A simple analytical method to determine deflection of a non-prismatic beam (stepped beam) under uniform loading condition along with validation by FEA results are discussed in this research paper. …
Published in Journal of Experimental & Applied Mechanics · Vol. 7, Issue 2, 2016 · pp. 1–8 Read article
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Fabrication Fault Diagnosis of Bracket for Air Borne Vehicle Using Experimental and Analytical Modal Analysis
Abstract: This paper presents the experimental and analytical modal analysis of bracket structures made of two different materials. Manual inspection of fabricated components may at-times tend to be much tedious and less economical approach in identifying any geometrical and dimensional flaws when the quantity is more and may also result in failure, particularly when the purpose for which the components are designed or fabricated is very sensitive and crucial. Effective methodology …
Published in Journal of Experimental & Applied Mechanics · Vol. 7, Issue 2, 2016 · pp. 19–29 Read article
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Investigation of Supersonic Flow Past a Cavity Using Basic Numerical Techniques
Abstract: This study, investigating various features of supersonic flow past a cavity, uses higher order essentially non-oscillatory Roe (ENO-Roe) method as the numerical method that solves full compressible Navier-Stokes equation in two dimensions. The turbulence effect is modelled considering 3% level of turbulence and by imposing the turbulent gust. It is seen that vortex shedding, which is a small scale phenomenon compared to other features of the flow, has been properly …
Published in Journal of Experimental & Applied Mechanics · Vol. 7, Issue 2, 2016 · pp. 30–40 Read article
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A Finite Element Solution of Functionally Graded Rotating Disk based on Element based Material Grading
Abstract: The present study reports finite element elastic analysis of variable thickness rotating disks made up of functionally graded materials (FGMs). The disks have exponentially varying material properties along the radius, which is achieved by varying the volume fraction ratio. Three types of thickness profile namely uniform, linearly varying and concave thickness profile having constant mass are analyzed and the resulting displacement and stresses areevaluated for free-free boundary condition. The investigation …
Published in Journal of Experimental & Applied Mechanics · Vol. 7, Issue 2, 2016 · pp. 41–47 Read article
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Optimization of Process Parameters in Electro-discharge Machining of EN24 Steel using Grey-Taguchi Method
Abstract: Electric Discharge Machining (EDM) is one of the nontraditional machining processes used to produce critical shape on hard or brittle conductive materials and it can also besuccessfully applied on materials that are extremely difficult-to-machine using traditional machining processes. In this experimental analysis the optimum machining parameters areestimated using Taguchi based method for EN24 steel which have wide range of application in aircraft, automotive and general engineering applications for example- propeller …
Published in Journal of Experimental & Applied Mechanics · Vol. 7, Issue 2, 2016 · pp. 48–53 Read article
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CFD Approach for Analyzing the Variation of Flow Parameters and Losses in a Mixed Flow Francis Turbine
Abstract: Francis turbine can be used for a wide range of head and discharge, thus it is the most versatile water turbine in use [1]. As load varies from full load; the regime of operation changes for meeting the required power demand on electric system [2]. Efficiency of Francis turbine drops significantly at part load and overloading operations due to increased shock losses at the entry to runner, eddy formation and …
Published in Journal of Experimental & Applied Mechanics · Vol. 7, Issue 2, 2016 · pp. 54–65 Read article
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Parametric Optimization and Stiffness Determination of XY Positioning Stage for High Precision Applications
Abstract: In micro-electro-mechanical system (MEMS) flexural mechanisms are widely used because of their advantages such as frictionless and wear less motion and high precision. Flexures depend on material elasticity for their functionality. In flexure mechanism, motion is generated due to elastic deformation of the beam from which it is made. One of the typical advantages of flexural mechanism is to gain precise deformation and flexibility to obtain motion in desired direction. …
Published in Journal of Experimental & Applied Mechanics · Vol. 7, Issue 2, 2016 · pp. 66–73 Read article
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Development and Experimental Characterization of Metallic Spring Isolators for Electronic Packages of Air Borne Vehicles
Abstract: During flight, electronic packages in air borne vehicles will experience aerodynamic induced loads like random vibration and shock. PCBs mounted in these packages either malfunction or fail due to high vibration which is due to the stacked mounting of PCBs. Desired gap between any two adjacent PCBs will be maintained with the help of rigid spacers in this mounting. It is understood that the solution for reducing this high vibration …
Published in Journal of Experimental & Applied Mechanics · Vol. 7, Issue 2, 2016 · pp. 9–18 Read article