A fuzzy approach to support DFA evaluation of design concepts

Design evaluation form one of the more important aspects in determining whether it has met the initial requirements. Post design evaluations however are less advantageous than those made in the earlier stage of design, since it provides for ample opportunity to make less costly changes to the des...

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主要作者: Omar, Badrul
格式: Thesis
語言:English
出版: 2008
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spelling my-uthm-ep.71912022-06-14T02:16:44Z A fuzzy approach to support DFA evaluation of design concepts 2008-06 Omar, Badrul TS Manufactures TS155-194 Production management. Operations management Design evaluation form one of the more important aspects in determining whether it has met the initial requirements. Post design evaluations however are less advantageous than those made in the earlier stage of design, since it provides for ample opportunity to make less costly changes to the design. During conceptual design stage, the knowledge and information about the design is often vague and incomplete and this makes evaluation even more difficult. At present there are not enough tools to support the designer to make evaluations on design concepts. This thesis presents an approach which will support designer doing evaluation on design concepts by incorporating DFA criteria into the evaluating tool. The criteria most useful at that stage would be the part count reduction analysis. The handling of the information and knowledge at this conceptual stage will be handled by a fuzzy logic expert system. A demonstration on the usefulness of fuzzy logic together with the part count analysis was done on two case studies. The first use the approach to demonstrate the way it can support the designers at the concepts selection stage and the second examines the redesign of an existing product. The result of the case studies shows that it is possible to integrate the use of fuzzy logic with DFA in providing support to the designer in doing design concepts evaluation. This approach also highlights the ability of fuzzy logic in representing information and knowledge at this conceptual stage in the form of fuzzy sets. 2008-06 Thesis http://eprints.uthm.edu.my/7191/ http://eprints.uthm.edu.my/7191/1/24p%20BADRUL%20OMAR.pdf text en public phd doctoral The University of Leads School of Mechanical Engineering
institution Universiti Tun Hussein Onn Malaysia
collection UTHM Institutional Repository
language English
topic TS Manufactures
TS Manufactures
spellingShingle TS Manufactures
TS Manufactures
Omar, Badrul
A fuzzy approach to support DFA evaluation of design concepts
description Design evaluation form one of the more important aspects in determining whether it has met the initial requirements. Post design evaluations however are less advantageous than those made in the earlier stage of design, since it provides for ample opportunity to make less costly changes to the design. During conceptual design stage, the knowledge and information about the design is often vague and incomplete and this makes evaluation even more difficult. At present there are not enough tools to support the designer to make evaluations on design concepts. This thesis presents an approach which will support designer doing evaluation on design concepts by incorporating DFA criteria into the evaluating tool. The criteria most useful at that stage would be the part count reduction analysis. The handling of the information and knowledge at this conceptual stage will be handled by a fuzzy logic expert system. A demonstration on the usefulness of fuzzy logic together with the part count analysis was done on two case studies. The first use the approach to demonstrate the way it can support the designers at the concepts selection stage and the second examines the redesign of an existing product. The result of the case studies shows that it is possible to integrate the use of fuzzy logic with DFA in providing support to the designer in doing design concepts evaluation. This approach also highlights the ability of fuzzy logic in representing information and knowledge at this conceptual stage in the form of fuzzy sets.
format Thesis
qualification_name Doctor of Philosophy (PhD.)
qualification_level Doctorate
author Omar, Badrul
author_facet Omar, Badrul
author_sort Omar, Badrul
title A fuzzy approach to support DFA evaluation of design concepts
title_short A fuzzy approach to support DFA evaluation of design concepts
title_full A fuzzy approach to support DFA evaluation of design concepts
title_fullStr A fuzzy approach to support DFA evaluation of design concepts
title_full_unstemmed A fuzzy approach to support DFA evaluation of design concepts
title_sort fuzzy approach to support dfa evaluation of design concepts
granting_institution The University of Leads
granting_department School of Mechanical Engineering
publishDate 2008
url http://eprints.uthm.edu.my/7191/1/24p%20BADRUL%20OMAR.pdf
_version_ 1747831121715920896