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Multiple Response Optimization of Dimensional Accuracy of Nimonic Alloy Miniature Gear Machined on Wire Edm Using entropy topsis Andpareto Anova

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Computer Modeling in Engineering & Sciences 2021年第1期126卷 241-259页

作者： Tina Chaudhary Arshad Noor Siddiquee Arindam Kumar Chanda Shafi Ahmad Irfan Anjum Badruddin Zahid A.Khan Department of Mechanical and Automation Engineering Indira Gandhi Delhi Technical University for WomenKashmere Gate110006India Department of Mechanical Engineering Jamia Millia Islamia(A Central University)New Delhi110025India Department of Mechanical and Automation Engineering G.B.Pant Engineering CollegeNew Delhi110020India Mechanical Engineering Department College of EngineeringKing Khalid UniversityAbha-61421AsirSaudi Arabia

The purpose of this research is to obtain the optimum cutting parameters to achieve the dimensional accuracy of Nimonic alloy miniature gear manufactured using Wire EDM.The cutting parameters investigated in this study are current,pulse on time(PON),pulse off time(POFF),wire tension(WT)and dielectric fluids.Ethylene glycol,nanopowder of alumina and oxygen are mixed to demineralized water to prepare novel dielectric fluids.Deviation in inner diameter,deviation in outer diameter,deviation in land and deviation in tooth width are considered to check the dimensional accuracy.Taguchi L_(16) is employed for experimental design and multiple response optimization is performed using entropy topsis and Pareto ANOVA.Results indicate that pulse on time is the most notable parameter for good dimensional accuracy followed by dielectric fluid,current,pulse off time and wire tension.Ethylene glycol mixed demineralized water is preferred for low dimensional deviation.The optimum WEDM parameters are pulse on time at 20μs,Ethylene glycol mixed demineralized water dielectric fluid,current at 3 A,pulse off time at 4μs,and wire tension at 18 N.

关键词： Miniature gear multiple optimization dimensional accuracy entropy topsis Pareto ANOVA

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The Competitiveness of Tourism Industry along the Silk Road Based on the entropy topsis

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International Journal of Plant Engineering and Management 2014年第3期19卷 129-138页

作者： YANG Jin MENG Yan-mei School of Humanities Economics and LawNorthwestern Ploytechnical University

As a new growth point of the national economy, the tourism has increasingly become one of the most dynamic industries in the tertiary industry. The tourism industry cluster has attracted more and more attention, and promoting the competitiveness of the tourism industry is the key to the development of regional tourism Northwest Silk Road area has made an important contribution to the development of local tourism through regional cooperation and joint development. Based on the brief review of the related literature at home and abroad, 16 indicators are used to establish the tourism industry competitiveness evaluation model. Then using FA and entropy topsis, this paper has carried on the empirical research of the tourism competitiveness in northwest five provinces. These analysis provide some theory reference and basis for the future development in the tourism market of the Silk Road economic belt.

关键词： silk road economic belt entropy topsis tourism competitiveness

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