Abstract
Representing the semantics of the interaction of two or more tolerances (i.e., composite tolerance) explicitly to make them computer-understandable is currently a challenging task in computer-aided tolerancing (CAT). We have proposed a description logic (DL) ontology-based approach to complete this task recently. In this paper, the representation of the semantics of the composite positional tolerance (CPT) for patterns of holes (POHs) is used as an example to illustrate the proposed approach. This representation mainly includes representing the structure knowledge of the CPT for POHs in DL terminological axioms; expressing the constraint knowledge with Horn rules; and describing the individual knowledge using DL assertional axioms. By implementing the representation with the web ontology language (OWL) and the semantic web rule language (SWRL), a CPT ontology is developed. This ontology has explicitly computer-understandable semantics due to the logic-based semantics of OWL and SWRL. As is illustrated by an engineering example, such semantics makes it possible to automatically check the consistency, reason out the new knowledge, and implement the semantic interoperability of CPT information. Benefiting from this, the ontology provides a semantic enrichment model for the CPT information extracted from CAD/CAM systems.
Original language | English |
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Pages (from-to) | 2121-2137 |
Number of pages | 17 |
Journal | International Journal of Advanced Manufacturing Technology |
Volume | 90 |
Issue number | 5-8 |
Early online date | 10 Oct 2016 |
DOIs | |
Publication status | Published - 1 May 2017 |
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Tukun Li
- Department of Engineering - Research Fellow
- School of Computing and Engineering
- Centre for Precision Technologies - Member
Person: Academic