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New Approach for Evaluation of Risk Priority Number (RPN) in Potential Failure Mode and Effects Analysis (FMEA)

N. Sellappan*, R. Sivasubramanian **

*Faculty of Mechanical Engineering,,Salalah College of Technology,Salalah,Sultanate of Oman

**Assistant Professor,Department of Mechanical Engineering,Coimbatore Institute of Technology ,Coimbatore,Tamilnadu

Periodicity:August - October'2007
DOI : https://doi.org/10.26634/jfet.3.1.693

Abstract

Failure Mode and Effects Analysis (FMEA) is a design tool that mitigates risks during the design phase before they occur. Risk is measured in terms of Risk Priority Number (RPN), which is the product of occurrence, severity and detection difficulty. The priority of the problems is articulated via the RPN. After the RPN has been determined, the evaluation begins based on the definition of the risk (Stamatis 1995). It has some limitations and problems when there is a disagreement in the ranking scale and if there are more than two failures with the same RPN. This paper presents a new approach for the evaluation of risk priority in Potential FMEA to overcome the short comings in the traditional FMEA technique.

Keywords

Failure Mode and Effects Analysis (FMEA), Risk Priority Number (RPN).

How to Cite this Article?

N. Sellappan and R. Sivasubramanian (2007). New Approach for Evaluation of Risk Priority Number (RPN) in Potential Failure Mode and Effects Analysis (FMEA). i-manager’s Journal on Future Engineering and Technology, 3(1), 20-25. https://doi.org/10.26634/jfet.3.1.693

References

[1], AIAG, 2001, "Potential Failure Mode and Effects Analysis (FMEA)", Reference Manual, Southfield, Michigan.

[2], Fiorenzo Franceschini and Maurizio Gaietto, 2001, "A New Approach for Evaluation of Risk Priorities of Failure Modes in FMEA", International Journal of Production Research, Vol.39, No.l 3, pp. 2991 -3002

[3]. Franceschini F and Rossetto S, 1997, "Design for quality: selecting product's technical features". Journal of Quality Engineering, Vol. 9, No.4, pp. 681 688.

[4], Fraser N M, 1994, "Ordinal Preference Representations", Journal of Theory and Decision, Vol.36, No.l,pp. 45 67.

[5]. Paul Palady, 1995, "Failure Modes And Effects Analysis", PT Publications, Inc., Suite C, West Palm Beach, FL33409.

[6], Stamatis D H, 1995, "Failure Mode and Effects Analysis: FMEA from Theory to Execution", Productivity Press India Pvt. Ltd., Madras.

[7].Seung J Rhee and Kosuke Ishii, 2003, "Using Cost Based FMEA to Enhance Reliability and Serviceability", Journal of Advanced Engineering Informatics, Vol. 17, pp. 179 188.

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