QFD와 FMEA를 이용한 화물창구의 품질 평가

Quality Assessment of Hatchway Using QFD & FMEA

  • 발행 : 2000.08.01

초록

제품이나 시스템의 품질은 오늘날에 이르러 고객만족을 의미하기에 더욱 중요하게 인식되고 있다. 이러한 품질의 한 특성으로 인식되는 성능은 주어진기능을 얼마나 잘 수행하는가를 의미하는 것으로 고객만족에 가장 접근하는 특성이다. 하지만 선박과 같은 대형 구조물을 다루는 공학자에 있어서 안전성은 사고 시에 발생하는 파괴나 인명피해 등과밀접하게 관계되어 있기 때문에 그 중요성이 더욱 크게 인식되고 있다. 본 연구에서는 구조물에서 중요하게 인식되는 성능과 안전성을 이용하여 품질기능전개(QFD)를 이용하여 성능을 분석하고 파괴모드 및 영향분석(FMEA)을 이용하여 안전성을 분석함으로써 고객의 요구사항에 기반을 둔 품질 분석 방법을 제시한다. 또한 이를 살물선의 화물창구에 적용하여 성능과 안전성 측면에서 중요한 부재를 각각 8가지, 12가지로 파악하였으며, 이들 중에서 공통으로 지적된 7가지 부재들은 설계자가 설계 시 특별한 관심을 갖고 우선적으로 개선해야 할 부분이다.

The quality of a product/system is getting more important concept nowadays. 'Performance', as one of the quality characteristics, means how well a product carries out its given functions and is the most adjacent characteristics to the customer satisfaction. To an engineer, however, who deals with large structures such as ships, 'Safety' is actually getting more important because of its direct relationship with failures of a product/system itself and human injuries when an accident occurs. In this study, therefore, we consider both performance and safety recognized the most important elements in dealing with structures and present a quality analysis method based on customer requirements by using QFD for performance analysis and FMEA for safety analysis respectively. Applying these methods to the hatchway of a bulk carrier, we could find 8 and 12 important parts based on performance and safety respectively. Among these, only 7 parts were pointed out commonly critical. From these, we can suggest that designers should pay more attention to these 7 parts and thus give a high priority of concerns to them when trying to improve the quality of system.

키워드

참고문헌

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