This study deals with the application of knowledge-engineering and a methodology for the assessment & measurement of reliability, availability, maintainability, and safety of industrial systems using fault-tree representation. A fuzzy methodology for fault-tree evaluation seems to be an alternative solution to overcome the drawbacks of the conventional approach(insufficient information concerning the relative frequences of hazard events). To improve the quality of results, the membership functions must be approximated based on heuristic considerations. The purpose of this Is to describe the knowlwdge engineering approach, directed to integrate the various sources of knowledge involved in a FTA.

ABSTRACT
 I. 서론
 II. 본론
  II.1 고장 가능성을 이용한 Fuzzy FTA 모형
  II.2 Fuzzy FTA 전문가 시스템
 III. 사례연구
 IV. 결과 및 분석
 V. 참고문헌

• 박주식
• 김길동
• 박상민