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Growing Science » International Journal of Industrial Engineering Computations

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Sort articles by: Volume | Date | Most Rates | Most Views | Reviews | Alphabet
1.

Application of desirability function for optimizing the performance characteristics of carbonitrided bushes Pages 305-314 Right click to download the paper Download PDF

Authors: Boby John

DOI: 10.5267/j.ijiec.2013.04.003

Keywords: Analysis of Variance, Carbonitriding, Design of Experiments, Multiple Response Optimisation Desirability Functi, Powder Metallurgy

Abstract:
The performance of a product is generally characterized by more than one response variable. Hence the management often faces the problem of simultaneous optimization of many response variables. This study was undertaken to simultaneously optimize the surface hardness and case depth of carbonitrided bushes. Even though lots of literature has been published on various methodologies for tackling the multi-response optimization problem, the simultaneous optimization of heat treated properties of carbonitrided bushes are not reported yet. In this research the effect of four factors and two interactions on surface hardness and case depth of carbontirded bushes were studied using design of experiments. Based on the experimental results, the expected values of the heat treated properties of the bushes were estimated for all possible combination of factors. Then the best combination which, simultaneously optimized the response variables, was arrived at using desirability function. The study showed that the optimum combination obtained through desirability function approach not only minimized the variation around the targets of surface hardness and case depth but also was superior to the ones obtained by optimizing the response variables separately. Moreover this study provides a useful and effective approach to design the production process to manufacture bushes with customer specified surface hardness and case depth targets.
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Journal: IJIEC | Year: 2013 | Volume: 4 | Issue: 3 | Views: 6124 | Reviews: 0

 
2.

A fuzzy goal programming approach to solve multi-objective supply chain network design problems Pages 315-324 Right click to download the paper Download PDF

Authors: Amir Abbas Kanani Nezhad, Emad Roghanian, Zahra Azadi

DOI: 10.5267/j.ijiec.2013.04.004

Keywords: Fuzzy linear programming, Logistics network, Supply chain management

Abstract:
The design of supply chain networks has attracted more attention in recent years according to business and environmental factors.in this paper a multi objective supply chain network design model aims to minimize network costs while satisfying the desired service level, is presented. A fuzzy goal programming (FGP) solution approach based on fuzzy membership function concept is developed to minimize costs and amount of investment while obtain maximum service level. Numerical experiments are conducted to test the efficiency of proposed solution method.
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Journal: IJIEC | Year: 2013 | Volume: 4 | Issue: 3 | Views: 3775 | Reviews: 0

 
3.

Optimization of multiple performance characteristics in turning using Taguchi’s quality loss function: An experimental investigation Pages 325-336 Right click to download the paper Download PDF

Authors: Ashok Kumar Sahoo, Tanmaya Mohanty

DOI: 10.5267/j.ijiec.2013.04.002

Keywords: Chip reduction coefficient, Cutting force, Orthogonal array, Taguchi’s loss function

Abstract:
Cutting force and chip reduction coefficient is the important index of machinability as it determines the power consumption and amount of energy invested in machining actions. It is primarily influenced by process parameters like cutting speed, feed and depth of cut. This paper presents the application of Taguchi’s parameter design to optimize the parameters for individual responses. For multi-response optimization, Taguchi’s quality loss function approach is proposed. In the present investigation, optimal values of cutting speed, feed and depth of cut are determined to minimize cutting force and chip reduction coefficient during orthogonal turning. The effectiveness of the proposed methodology is illustrated through an experimental investigation in turning mild steel workpiece using high speed steel tool.
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Journal: IJIEC | Year: 2013 | Volume: 4 | Issue: 3 | Views: 3906 | Reviews: 0

 
4.

A useful empirical Bayesian method to analyse industrial data from saturated factorial designs Pages 337-344 Right click to download the paper Download PDF

Authors: Marta Yukie Baba, Jorge Alberto Achcar, Fernando Antonio Moala, Sergio Minoru Oikawa, Claudio Luis Piratelli

DOI: 10.5267/j.ijiec.2013.04.001

Keywords: Empirical Bayesian methods, Plackett-Burman designs, Saturated designs

Abstract:
The use of saturated two-level designs is very popular, especially in industrial applications where the cost of experiments is too high. Standard classical approaches are not appropriate to analyze data from saturated designs, since we could only get the estimates of the main factor effects and we would not have degrees of freedom to estimate the variance of the error. In this paper, we propose the use of empirical Bayesian procedures to get inferences for data obtained from saturated designs. The proposed methodology is illustrated assuming a simulated data set.
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Journal: IJIEC | Year: 2013 | Volume: 4 | Issue: 3 | Views: 2421 | Reviews: 0

 
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5. Optimizing a multi-objectives flow shop scheduling problem by a novel genetic algorithm Pages 345-354 Right click to download the paper Download PDF

Authors: N. Shahsavari Pour, R. Tavakkoli-Moghaddam, H. Asadi

DOI: 10.5267/j.ijiec.2013.03.008

Keywords: ANOVA, Flow-shop scheduling, Makespan, Multi-objective optimization Genetic algorithm, Total tardiness, Total waiting time

Abstract:
Flow-shop problems, as a typical manufacturing challenge, have become an interesting area of research. The primary concern is that the solution space is huge and, therefore, the set of feasible solutions cannot be enumerated one by one. In this paper, we present an efficient solution strategy based on a genetic algorithm (GA) to minimize the makespan, total waiting time and total tardiness in a flow shop consisting of n jobs and m machines. The primary objective is to minimize the job waiting time before performing the related operations. This is a major concern for some industries such as food and chemical for planning and production scheduling. In these industries, there is a probability of the decay and deterioration of the products prior to accomplishment of operations in workstation, due to the increase in the waiting time. We develop a model for a flowshop scheduling problem, which uses the planner-specified weights for handling a multi-objective optimization problem. These weights represent the priority of planning objectives given by managers. The results of the proposed GA and classic GA are analyzed by the analysis of variance (ANOVA) method and the results are discussed.
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Journal: IJIEC | Year: 2013 | Volume: 4 | Issue: 3 | Views: 3319 | Reviews: 0

 
6.

A solution to robot selection problems using data envelopment analysis Pages 355-372 Right click to download the paper Download PDF

Authors: Suprakash Mondal, Shankar Chakraborty

DOI: 10.5267/j.ijiec.2013.03.007

Keywords: Additive model, BCC model, CCR model, Cone ratio model, Data envelopment analysis, Robot selection

Abstract:
Selection of industrial robots for the present day’s manufacturing organizations is one of the most difficult assignments due to the presence of a wide range of feasible alternatives. Robot manufacturers are providing advanced features in their products to sustain in the globally competitive environment. For this reason, selection the most suitable robot for a given industrial application now becomes a more complicated task. In this paper, four models of data envelopment analysis (DEA), i.e. Charnes, Cooper and Rhodes (CCR), Banker, Charnes and Cooper (BCC), additive, and cone-ratio models are applied to identify the feasible robots having the optimal performance measures, simultaneously satisfying the organizational objectives with respect to cost and process optimization. Furthermore, the weighted overall efficiency ranking method of multi-attribute decision-making theory is also employed for arriving at the best robot selection decision from the short-listed competent alternatives. In order to demonstrate the relevancy and distinctiveness of the adopted DEA-based approach, two real time industrial robot selection problems are solved.
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Journal: IJIEC | Year: 2013 | Volume: 4 | Issue: 3 | Views: 7706 | Reviews: 0

 
7.

Project selection problem under uncertainty: An application of utility theory and chance constrained programming to a real case Pages 373-385 Right click to download the paper Download PDF

Authors: Behnam Beheshti Pour, Siamak Noori, Reza Hosnavi Atashgah

DOI: 10.5267/j.ijiec.2013.03.006

Keywords: Chance constrained programming, Project selection, Utility theory

Abstract:
Selecting from a pool of interdependent projects under certainty, when faced with resource constraints, has been studied well in the literature of project selection problem. After briefly reviewing and discussing popular modeling approaches for dealing with uncertainty, this paper proposes an approach based on chance constrained programming and utility theory for a certain range of problems and under some practical assumptions. Expected Utility Programming, as the proposed modeling approach, will be compared with other well-known methods and its meaningfulness and usefulness will be illustrated via two numerical examples and one real case.
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Journal: IJIEC | Year: 2013 | Volume: 4 | Issue: 3 | Views: 2778 | Reviews: 0

 
8.

Measuring the performance of FCM versus PSO for fuzzy clustering problems Pages 387-392 Right click to download the paper Download PDF

Authors: Hamid Reza Jafari, Amir Reza Soltani, Mohammad Reza Soltani

DOI: 10.5267/j.ijiec.2013.03.005

Keywords: PSO, FCM, Fuzzy clustering, Xie-Beni

Abstract:
Clustering cellular manufacturing plays an important role in many industrial engineering problems. This paper investigates the performance of two methods of heuristic and metaheuristics fuzzy clustering. The proposed method investigates heuristic well-known FCM and particle swarm optimization (PSO) on some well-known benchmarks. We use two criteria of J(P) as well as Xie-Beni to compare the results. Three parameters of PSO method is tuned using design of experiment and then the results of PSO are compared versus FCM method in terms of two mentioned criteria. The proposed models are run for each instance 10 different times and, using ANOVA test, the means of two methods are compared. While the results of ANOVA do not indicate any meaningful difference between PSO and FCM in terms of J(P), we have found some meaningful differences between PSO and FCM in terms of Xie-Beni criterion. In other words, PSO performs better than FCM in terms of Xie-Beni.
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Journal: IJIEC | Year: 2013 | Volume: 4 | Issue: 3 | Views: 2422 | Reviews: 0

 
9.

Some heuristics for the hybrid flow shop scheduling problem with setup and assembly operations Pages 393-416 Right click to download the paper Download PDF

Authors: Parviz Fattahi, Seyed Mohammad Hassan Hosseini, Fariborz Jolai

DOI: 10.5267/j.ijiec.2013.03.004

Keywords: Assembly operation, Heuristic, Hybrid flow shop, Scheduling, Setup

Abstract:
This paper presents a two-stage hybrid flow shop scheduling problem with setup and assembly operations. The proposed study of this paper considers one kind of product with a quantity of demand where each product is made by assembling a set of different parts. At first, the parts are manufactured in a two-stage hybrid flow-shop and then the parts are assembled into products on assembly stage. Setup operations are needed when a machine starts processing the parts or it changes items. The considered objective is minimizing the completion time of all products. Since the problem is classified as NP-hard class, a combinatorial algorithm is proposed. The proposed algorithm is a three-step procedure where we use heuristic, genetic algorithm (GA), simulated annealing (SA), NEH and Johnson’s algorithm. Three lower bounds are presented and improved to evaluate the proposed algorithms. An extensive computational experiment is conducted to compare the performances of the proposed algorithms.
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Journal: IJIEC | Year: 2013 | Volume: 4 | Issue: 3 | Views: 3481 | Reviews: 0

 
10.

Modeling quality control data using mixture of parametrical distributions Pages 417-426 Right click to download the paper Download PDF

Authors: Jorge Alberto Achcar, Claudio Luis Piratelli, Roberto Molina de Souza

DOI: 10.5267/j.ijiec.2013.03.003

Keywords: Bayesian methods, MCMC methods, Mixture models, Quality control times, Regression

Abstract:
In this paper, we present a Bayesian analysis of a data set selected from a Brazilian food company. This data set represents the times taken for different quality control analysts to test manufactured products arriving at the company’s quality control department. The samples selected from each batch contain mixtures of different products, which may be submitted to quality testing taking different times. From preliminary analysis of the data, it was observed that the histograms presented two clusters, indicating a mixture of distributions. A mixture of parametrical distributions was thus assumed in the presence of a covariate in order to analyze the data set and to establish standards to be used by the company for the times taken by the analysts. Inferences and predictions are obtained using a Bayesian approach with standard existing Markov Chain Monte Carlo (MCMC) methods.
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Journal: IJIEC | Year: 2013 | Volume: 4 | Issue: 3 | Views: 2147 | Reviews: 0

 
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