Abstract #300733

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JSM 2002 Abstract #300733
Activity Number: 184
Type: Contributed
Date/Time: Tuesday, August 13, 2002 : 8:30 AM to 10:20 AM
Sponsor: Section on Quality & Productivity*
Abstract - #300733
Title: Clustering of Event Sequences for Failure Root Cause Analysis
Author(s): Pradipta Sarkar*+
Affiliation(s): United Technologies Research Center
Address: 411 Silver Lane, MS 129-73, E. Hartford, Connecticut, 06108, USA
Keywords: Cluster Analysis ; Sequence Analysis ; Root Cause Analysis ; Reliability
Abstract:

When there is a lot of different failure types in a complex equipment it is sometimes difficult to identify the root cause for failure. We have developed a technique based on the analysis of the sequence of events preceding a failure to classify large numbers of failure types into a smaller number of categories. These categories, when investigated closely enough, might reveal the actual causes for such failures. In doing so, we will be able to assign certain root causes to each of these groups of failure types. Such classification will help the repairperson to decide which subsystem he/she should check first to solve the problem. It will also help the organization in adopting a proactive maintenance action if failure types belonging to a particular category occur repeatedly.

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Revised March 2002