The New Jersey Institute of Technology's
Electronic Theses & Dissertations Project

Title:	Design for quality manufacturability analysis of total nonconformity damaged parts
Author:	Gami, Samir R.
View Online:	njit-etd1996-055 (x, 76 pages ~ 3.4 MB pdf)
Department:	Department of Industrial and Manufacturing Engineering
Degree:	Master of Science
Program:	Manufacturing Systems Engineering
Document Type:	Thesis
Advisory Committee:	Das, Sanchoy K. (Committee chair) Abdel-Malek, Layek (Committee member) Sodhi, R. S. (Committee member)
Date:	1996-01
Keywords:	Production engineering--Design. Manufacturing processes--Quality control.
Availability:	Unrestricted
Abstract:	The competitive nature of modern manufacturing, demands that innovative approaches be applied in order to have a competitive edge. Shortening the product development cycle, the period from initial design to full production, is a priority for most manufacturers today. The DFQM methodology addresses the issue of quality manufacturability (QM) - the likelihood that defects will occur during manufacture of a product in a standard plant. As a consequence, DFQM helps to shorten the design cycle time. The DFQM architecture identifies a variety of design factors and variables that influence specific defects. This process of influencing defects can be described by error catalysts. This thesis presents the design of the error catalyst associated with two classes of defects, which are total nonconformity and damaged parts. Error catalysts are described in the form of catalysis graphs. Each catalysis graph leads to an index between "0" and "I", based on the factor variables for the given design, implying the likelihood of occurrence of that specific defect. The overall QM Index of a design is derived from these values. The error catalysts associated with defect class total nonconformity helps to identify features in design that results into poor quality product when it is assembled. The error catalyst associated with defect class damaged parts, helps to introduce rigidity and optimize aesthetics in product. The DFQM analysis is then applied on an example product to illustrate the practical feasibility of the methodology.