scholarly journals Modelling using dimensional analysis and optimization with grey-taguchi based fuzzy approach in s-eddg of skd-11 steel

2021 ◽  
Author(s):  
Manoj Modi ◽  
◽  
Agarwal G ◽  
Swati D Chaugaonkar ◽  
◽  
...  
Keyword(s):  
Mathematical Models ◽  
Dimensional Analysis ◽  
Process Parameters ◽  
Research Work ◽  
Machining Process ◽  
Analysis Method ◽  
Process Variables ◽  
Set Up ◽  
Dimensional Analysis Method ◽  
Grey Taguchi

The SKD-11 steel was machined by the hybrid surface-electro discharge diamond grinding (S-EDDG) machining process with an aim to determine the optimum setting of process parameters for multi-output optimization and thereafter developed the mathematical-models of material-removal-rate (MRR), and surface-roughness (Ra) through the Dimensional Analysis method. In this research work, Grey-Taguchi based Fuzzy method is utilized for multi-output optimization of process parameters. The various process-variables selected in this research work are current, voltage, wheel speed, pulse-on-time, duty-cycle, and nozzle flushing aid. Total 18 experiments have been conducted on S-EDDG set-up according to Taguchi’s L18 orthogonal array. The response table and Analysis of Variance investigation are used to determine the optimum setting of process control-parameters and further help to determine the impact of these control-factors on the multi-output performance index (MPI). In this research work, the Dimensional Analysis method is utilized for the development of mathematical models of MRR, and Ra. The experimental results and predicted estimation of values from the developed models were compared and showed satisfactory matching between them. The optimum combination of process variables suggested by the hybrid optimization method was validated through confirmation experiment whose result depicts that aimed MPI is significantly improved by 0.435. The suggested optimum setting of process variables helps the production engineer to set-up the economical-cum-efficient process.

scholarly journals Dimensional Analysis of Average Diameter of Bubbles for Bottom Blown Oxygen Copper Furnace

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Dongxing Wang ◽  
Yan Liu ◽  
Zimu Zhang ◽  
Pin Shao ◽  
Ting’an Zhang
Keyword(s):  
Dimensional Analysis ◽  
High Speed ◽  
Cold Water ◽  
Average Diameter ◽  
Water Model ◽  
Smelting Process ◽  
Analysis Method ◽  
Dimensional Analysis Method ◽  
Principle Of Similarity ◽  
Matte Smelting

Average diameter of bubbles is important in copper furnace. Based on the principle of similarity, a slice water model of a furnace with bottom-blown oxygen in matte-smelting process was established. A high-speed camera was used to record images continuously and clearer pictures were selected for treatment. Finally, image processing software was used for obtaining the average diameter of the bubbles. The effects of different injection conditions and equipment factors such as the diameter of nozzle, the nozzle installing angle, and gas velocity on the average diameter of bubbles were studied with cold water model experiment, exploring the dispersion and disintegration rules of bubbles. According to experimental data and Buckingham’s theorem, by using dimensional analysis method, an empirical formula on average diameter of bubbles was established (dB=0.41666d0.29374θ-0.46572v-0.16725). It can be seen from the formula that nozzle installing angle and diameter of nozzle make the most impact on the average diameter of bubbles in bottom blown oxygen copper furnace.

Study on Optimum Product Portfolio of Coach Board for Metallurgical Enterprise Based on Four-Dimensional Analysis Method

2010 ◽  
Vol 148-149 ◽  
pp. 702-706
Author(s):  
Liang Han ◽  
Rong Du
Keyword(s):  
Growth Rate ◽  
Dimensional Analysis ◽  
Market Share ◽  
Matrix Method ◽  
Three Dimensional ◽  
Product Portfolio ◽  
Sales Growth ◽  
Analysis Method ◽  
Metallurgical Enterprise ◽  
Dimensional Analysis Method

The paper analyzes the application of traditional Boston matrix method and three dimensional analysis chart method on product portfolio of metallurgical enterprise, and raises a four dimensional analysis method by inheriting their advantages and improve disadvantages. It is more effectively and practically to establish optimum product portfolio of domestic metallurgical enterprise by the four dimensional analysis method and the four elements are market share, sales growth rate, profitability and sales efficiency. When metallurgical enterprises analyze the optimum product portfolio using four dimensional analysis method, they should take sales efficiency fully into account, adjust product portfolio timely and at last realize the optimum product portfolio.

High-Accuracy Modeling of Ship Deformation Based on Inertial Measuring Method

2013 ◽  
Vol 760-762 ◽  
pp. 1227-1232 ◽  
Author(s):  
Er Kai Yuan ◽  
Gong Liu Yang
Keyword(s):  
Mathematical Models ◽  
Measurement Data ◽  
Measuring Method ◽  
High Accuracy ◽  
Analysis Method ◽  
Matching Method ◽  
Precision Estimation ◽  
Set Up ◽  
Better Than ◽  
Initial Measurement

High-accuracy modeling is the key problem of ship deformation measurement based on inertial measuring method. This paper is to find a high-accuracy modeling method based on the ship deformation data measured by optical devices. According to different modeling methods, mathematical models are designed by the analysis of the initial measurement data. Wavelet analysis method is introduced in the process of modeling. Attitude matching method is selected as the simulation algorithm and Kalman filter equations are set up based on the algorithm. Simulation results show that the ship deformation can be represented accurately by mathematical models. The Precision Estimation result is better than 0.4''.

Numerical Analysis of Lab Ventilation on Double Gaseous Polluted Sources

2011 ◽  
Vol 374-377 ◽  
pp. 475-479
Author(s):  
Da Hua Jiang ◽  
An Gui Li ◽  
Fa En Shi ◽  
Zhi Hua Wang
Keyword(s):  
Numerical Analysis ◽  
Dimensional Analysis ◽  
Analysis Method ◽  
Emission Efficiency ◽  
Air Supply ◽  
Pollutants Emission ◽  
Temperature Efficiency ◽  
Dimensional Analysis Method ◽  
Supply Velocity

This article uses CFD to study the efficiency of ventilation and pollution discharge of double polluted sources in the lab, and investigate the effect of air exhaust outlet location and air supply velocity on the performance of side ventilation. Using non-dimensional analysis method to analyze change of temperature,velocity with room height, the change of temperature efficiency and pollutants emission efficiency with the air supply velocity. The results show that the efficiencies of temperature and pollutants emission are the highest when h/H=0.175 and v=0.4m/s.

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