SHARING AND REUTILIZING CURRENT KNOWLEDGE ABOUT THE APPLICATION OF THE POTENTIAL FAILURE MODES AND EFFECTS ANALYSIS IN MANUFACTURING PROCESSES (PFMEA) Walter Luís Mikos e João Carlos Espíndola Ferreira
Resumo: The Potential Failure Modes and Effects Analysis in Manufacturing and Assembly Processes (PFMEA) represents nowadays an important preventive method for quality assurance, in which several specialists are involved in the investigation and evaluation of all the causes and effects related to all possible failure mode of a manufacturing process, still in the initial phases of its development. Thus, it can be planned and prioritized the decisions based on the severity levels and probabilities of occurrences and detection of the failure modes, aiming at improving the quality of the products produced by these processes. The result of this activity consists of a valuable source of knowledge about the manufacturing processes in the company. However, the sharing and the reutilization of this knowledge is a challenge, because in general all related information is acquired in the form of natural language, and therefore it is not represented in the form of explicit knowledge. In this context, the objective of this paper is to present the development and implementation of a formal ontology based on description logic (DL) for the representation of knowledge in the domain of PFMEA, which fundamentally intends to allow the inference and knowledge retrieval computationally as support to the activities of organizational knowledge in manufacturing environments with distributed resources. The paper analyzes and discusses the results of the implementation of the PFMEA-DL ontology related to a machining process of a mechanical part.
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