Mileman, Tony, Knight, Brian, Petridis, Miltos, Cowell, Don and Ewer, J. ORCID: 0000-0003-0609-272X (2002) Case-based retrieval of 3-dimensional shapes for the design of metal castings. Journal of Intelligent Manufacturing, 13 (1). pp. 39-45. ISSN 0956-5515 (Print), 1572-8145 (Online) (doi:https://doi.org/10.1023/A:1013676928961)

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Abstract

This paper describes research into retrieval based on 3-dimensional shapes for use in the metal casting industry. The purpose of the system is to advise a casting engineer on the design aspects of a new casting by reference to similar castings which have been prototyped and tested in the past. The key aspects of the system are the orientation of the shape within the mould, the positions of feeders and chills, and particular advice concerning special problems and solutions, and possible redesign. The main focus of this research is the effectiveness of similarity measures based on 3-dimensional shapes. The approach adopted here is to construct similarity measures based on a graphical representation deriving from a shape decomposition used extensively by experienced casting design engineers. The paper explains the graphical representation and discusses similarity measures based on it. Performance measures for the CBR system are given, and the results for trials of the system are presented. The competence of the current case-base is discussed, with reference to a representation of cases as points in an n-dimensional feature space, and its principal components visualization. A refinement of the case base is performed as a result of the competence analysis and the performance of the case-base before and after refinement is compared.

Item Type:	Article
Additional Information:	[1] CMS Ref. No: 02/69.
Uncontrolled Keywords:	case-based reasoning, casting design, CBR competence, CBR performance, casting, foundry, knowledge management, knowledge-based systems, spatial reasoning, 3-dimensional shapes
Subjects:	Q Science > QA Mathematics > QA76 Computer software
Pre-2014 Departments:	School of Computing & Mathematical Sciences School of Computing & Mathematical Sciences > Centre for Numerical Modelling & Process Analysis School of Computing & Mathematical Sciences > Centre for Numerical Modelling & Process Analysis > Fire Safety Engineering Group School of Computing & Mathematical Sciences > Computer & Computational Science Research Group School of Computing & Mathematical Sciences > Department of Computer Science School of Computing & Mathematical Sciences > Department of Mathematical Sciences
Related URLs:	Publisher Organisation
Last Modified:	18 Feb 2020 16:03
URI:	http://gala.gre.ac.uk/id/eprint/934

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