• Title/Summary/Keyword: fmea

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How to Perform FMEA Effectively (효과적인 FMEA 실시)

  • 장중순;안동근
    • Journal of Korean Society for Quality Management
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    • v.25 no.1
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    • pp.156-172
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    • 1997
  • FMEA is a widely used technique to assess or to improve reliability of products at early stage of design and development. In order to implement FMEA effectively, it is important to utilize knowledge or technical know-hows. However, that is very difficult. In fact, if information on the failure modes is enough, it is important to consider a counterplan to eliminate critical failure modes. If engineers do not have such information, however, it is more important to know what failure modes of the component under consideration would undergo. This means that the purposes of performing FMEA varies according to the situation. Therefore, we need different kinds of FMEA charts to meet those purposes. This paper proposes two FMEA charts: one is suitable for detecting potential failure modes and the other is for product improvements.

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FMEA에 의한 기계 부품의 신뢰도 분석

  • 이상진;고장주;강창학;이치우
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2004.10a
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    • pp.87-91
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    • 2004
  • This paper dealt with FMEA, Which is a method of the analysis to secure safety and confidence coming up to customer's expectation in consideration of the environment of the corporation, the industrial environment, and the functional improvement. And by using FMEA, We showed the example analyzed the confidence of the reduction gear. It was proved by the result of the analysis that the rate of the breakdown which is usually regarded as the first important point to reform can't satisfy the selecting basis to improve. Also the result said that it is not right to depend on only the rate of the failure in making the list of the reform. Through the analysis of the breakdown, FMEA can present the important factors of the reform to improve the confidence of the system. In this study would show the important factors of the improvement in order to product the goods guaranteed confidence through the method of FMEA.

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A Case study on Software FMEA for Power Electronics Domain (소프트웨어 FMEA의 전력 전자 사례 연구)

  • Jeong, Seungho;Lee, Bong-ki;Cho, Joo-hyun
    • Proceedings of the Korea Information Processing Society Conference
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    • 2016.10a
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    • pp.2-3
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    • 2016
  • 본 논문은 기능 안전에 대한 관심이 고조되고 있는 전력 전자 응용 분야에서 소프트웨어 FMEA로 안정성 분석을 수행한 사례 연구를 설명한다. 우선, 기존 연구들이 제안한 소프트웨어 FMEA의 방법론을 고찰하여 전력 전자 응용에 적합하게 다시 모델링을 한다. 전력 전자 소프트웨어의 안전 필수 컴포넌트를 선정하여 소프트웨어 FMEA를 수행하고, 본 연구에서 사용한 워크시트를 소개한다. 마지막으로 소프트웨어 FMEA를 전체 소프트웨어로 확대 적용하기 위한 방법을 고찰한다.

A Study on Improvement of Quality System Level Using System FMEA (시스템 FMEA를 이용한 품질 시스템의 수준향상에 관한 연구)

  • 우정열;황승국;강성수
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.24 no.69
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    • pp.107-119
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    • 2001
  • In this paper, we propose a model of improvement of quality system level using system FMEA. The system FMEA is developed to a system analysis technique using the concepts of conventional FMEA. This is know what is important factor to manage the ISO 9000 Quality System. Therefore, it is used the system FMEA as the main method of the proposed model. The important factors of this model are internal quality audits, corrective and preventive action, customer claim review management review. This model is considered to be guideline for improvement of quality system level. We show the efficiency of the proposed model by means of a case study.

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Reestablishment of RPN Evaluation Method in FMEA Procedure for Motors in Household Appliances (가전용 모터의 FMEA 실시 과정에서의 RPN 평가방법 재정립)

  • Kim, S.Y.;Kim, H.G.;Yun, W.Y.
    • Journal of Korean Society for Quality Management
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    • v.35 no.1
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    • pp.1-9
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    • 2007
  • Failure mode and effects analysis (FMEA) is a widely used technique to assess or to improve reliability of products at early stage of design and development. Traditionally, the prioritization of failures for corrective actions is performed by developing a risk priority number (RPN). In practice, due to insufficient evaluation criteria specific to related product and processes, RPN is not properly evaluated. This paper reestablishes an effective methodology for prioritization of failure modes in FMEA procedure. Revised evaluation criteria of RPN are devised and a refined FMEA sheet is Introduced. To verify the proposed methodology, it is applied to RPN evaluation for motors in household appliances.

A Systematic Approach for Evaluating FMEA of a Service System under Considering the Dependences of Failure Modes (실패유형의 종속성을 고려한 서비스 시스템의 FMEA 평가모델)

  • Oh, Hyung Sool;Park, Roh Gook
    • Asia-Pacific Journal of Business Venturing and Entrepreneurship
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    • v.9 no.1
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    • pp.177-186
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    • 2014
  • Failure mode and effect analysis (FMEA) is a systematic approach for identifying potential failures before they occur, with the intent to minimize the risk associated with them. It has been widely used in the various manufacturing industries as a solution to reliability problems. As the importance of the service sector is increasing, however, it has been recently extended to some applications in services. Despite these attempts, FMEA cannot be directly applied to the reliability problems in a service industry. Due to the heterogeneity and customer participation in service process, we cannot perfectly prevent service failures. For this reason, we suggest a new risk priority number with three input parameters that consist of severity, probability of occurrence, and recoverability. In this paper, we propose an approach for assessing service risk and service reliability using the service-oriented risk priority number (S-RPN). An example regarding a hypermarket service process is used to demonstrate the proposed approach.

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A Study on the Applicability of FMEA and it's Results for Hand Grenade in Government Quality Assurance Planning (군수품 정부품보활동계획에 FMEA 분석결과의 적용방안 및 적용결과의 고찰)

  • Lee, YoungWoo;Kwon, InKyu
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.17 no.2
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    • pp.252-258
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    • 2016
  • Risk identification based on the government quality assurance activity for military goods is being conducted to determine the risks to be reflected in a government quality assurance plan. On the other hand, current risk evaluation method focuses mainly on the functional requirements of the product specifications, which is a lack of reflection and identification of risks considering the process and the method is determined from a personal opinion, for example experience and know-how, which results in a lack of objectivity. Therefore, a standard of judgment according to quantitative data, which includes the present process control data using the FMEA method is required to improve the objectivity and dependability. This paper proposes useful suggestions for a government quality planning method to apply the results of FMEA to hand grenades.

Construction Safety Management Using FMEA Technique for Selecting Priority order (FMEA를 활용한 중점안전관리 항목 도출방안)

  • Yu, Jung-Ho;Song, Ji-Won;Kim, Chang-Duk
    • Korean Journal of Construction Engineering and Management
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    • v.9 no.6
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    • pp.185-193
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    • 2008
  • As buildings become higher and larger, the possibility of accident also increases, and recurrent accidents and serious accidents are also increasing. However, it is not possible to control all the hazardous activities in construction site. Therefore, hazardous activities with higher possibility should be identified and prioritized in advance so engineers and managers can control the activities in safe manner. For this purpose, this research adopts FMEA technique, which has been widely utilized in manufacturing industry. In order to apply FMEA technique in construction safety management, the process of construction work is divided into sub-processes or activities. Then FMEA technique is applied to quantitatively analyze the importance of each activity from the safety perspective.

Maintenance Method of Mail Sorting Machine Based on FMEA (FMEA 기반 우편 기계 유지 보수 방법)

  • Park, Jeong-Hyun
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.11 no.5
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    • pp.1601-1607
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    • 2010
  • This paper presents FMEA (Failure Mode Effect Analysis) for maintenance of mail sorting machine which is for automatic sorting of mail. We suggest the update method of regular diagnosis item and period for maintenance of mail sorting machine using the risk priority number which is calculated by severity, occurrence, and detection of failure mode of mail sorting machine, and shows FMEA adoption example of letter sorting machine. This paper also describes the current maintenance system and status of mail sorting machine in the domestic postal logistics environment, and FMEA adoption step. The proposed maintenance using FMEA will be adapted for more easy and efficiency maintenance of mail sorting machine.