January 2011
Investigation of cutting parameters of surface roughness for a non-ferrous material using artificial neural network in CNC turning
Surface roughness, an indicator of surface quality is one of the most specified customer requirements in a machining process. For efficient use of machine tools, optimum cutting parameters (speed, feed and depth of cut) are required. So it is necessary to find a suitable optimization method which can find optimum values of cutting parameters for minimizing surface roughness. The turning process parameter...
September 2011
An investigation of the effect of work piece reinforcing percentage on the machinability of Al-SiC metal matrix composites
This paper presents the study of the tool wear mechanism in machining the metal matrix composites (MMC) and its dependence on the percentage of reinforcing with MMC. Aluminum alloy (A356 - SiC) silicon carbide metal matrix composite of two samples, were prepared in-house by using stir casting method. Samples having 10 and 20% silicon carbide particles (grain size ranging from 55 to 85 mm) by weight are...
September 2011
Evaluation of thermodynamic properties of ammonia-water mixture up to 100 bar for power application systems
In Kalina power generation, as well as vapor absorption and refrigeration systems ammonia-water mixture has been used as working fluids. In this work, new MatLab code was developed to calculate the thermodynamic properties which will be used to simulate Kalina cycle. The progam developed in MatLab gives fast calculation of the thermodynamic properties. The correlations proposed by Ziegler and Trepp (1984),...
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