Web based FMECA Interface Linked to an Expert System for Oil Analysis

摘要

A World Wide Web (WWW) interface to a FMECA (Failure Mode Effects and Criticality Analysis) building tool and database is described in this paper. The WWW FMECA has been linked to an oil analysis expert system. The interface is based on an Oracle 7 distributed database tightly integrated with Web server functions. A second laboratory Oracle distributed database contains historical oil analysis data. A rule based expert system accesses both databases and matches pertinent failure mode and detection method details from the FMECA database with current and statistical trend data from the laboratory database. The FMECA database contains both public and private data. Publicly accessible tables contain failure rates, failure mode distributions, causes, effects, detection methods, and severity classifications while private tables contain the failure mode analyses accessible only to the authenticated user. The general data tables provide cooperative and synergistic advantages to a diverse spectrum of users and industries. These advantages include consistent naming of parts and failure modes even where multiple languages are used. The FMECA database provides knowledge that is easily assimilated by an expert system.