Combined quality loss (CQL) concept in WPCA-based Taguchi philosophy for optimization of multiple surface quality characteristics of UNS C34000 brass in cylindrical grinding

The present study highlights a multi-objective optimization problem by applying Weighted Principal Component Analysis (WPCA) coupled with Taguchi method through a case study in cylindrical grinding of UNS C34000 Medium Leaded Brass. The study aimed at evaluating the best process environment which co...

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Bibliographic Details
Published in:International journal of advanced manufacturing technology 2010-11, Vol.51 (1-4), p.135-143
Main Authors: Routara, Bharat Chandra, Mohanty, Saumya Darsan, Datta, Saurav, Bandyopadhyay, Asish, Mahapatra, Siba Sankar
Format: Article
Language:English
Subjects:
CAE) and Design
Computer-Aided Engineering (CAD
Correlation analysis
Cylindrical grinding
Engineering
Grinding
Industrial and Production Engineering
Leaded brasses
Mechanical Engineering
Media Management
Multiple objective analysis
Optimization
Original Article
Performance indices
Principal components analysis
Quality
Quality management
Surface properties
Taguchi methods
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Summary:The present study highlights a multi-objective optimization problem by applying Weighted Principal Component Analysis (WPCA) coupled with Taguchi method through a case study in cylindrical grinding of UNS C34000 Medium Leaded Brass. The study aimed at evaluating the best process environment which could simultaneously satisfy multiple requirements of surface quality. In view of the fact that traditional Taguchi method fails to solve a multi-objective optimization problem, to overcome this limitation, WPCA has been coupled with Taguchi method. Furthermore, to follow the basic assumption of Taguchi method, i.e., quality attributes should be uncorrelated or independent; which is not always satisfied in practical situation; the study applied WPCA to eliminate response correlation and to evaluate independent or uncorrelated quality indices called principal components which were aggregated by WPCA to compute overall quality index denoted as Multi-Response Performance Index. A combined quality loss was then estimated which was optimized (minimized) finally. The study combined WPCA and Taguchi method for predicting optimal setting. Optimal result was verified through confirmatory test. This indicates application feasibility of the aforesaid methodology proposed for multi-response optimization and off-line control of correlated multiple surface quality characteristics in cylindrical grinding.
ISSN:0268-3768
1433-3015
DOI:10.1007/s00170-010-2599-1