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A Concept of Risk Prioritization in FMEA of Fluid Power Components

Author

Listed:
  • Joanna Fabis-Domagala

    (Faculty of Mechanical Engineering, Cracow University of Technology, Al. Jana Pawla II 37, 31-864 Cracow, Poland
    These authors contributed equally to this work.)

  • Mariusz Domagala

    (Faculty of Mechanical Engineering, Cracow University of Technology, Al. Jana Pawla II 37, 31-864 Cracow, Poland
    These authors contributed equally to this work.)

Abstract

FMEA is a widely used tool for decades and is also used as an industrial standard. However, there are two main drawbacks of this analysis that have been specified from the beginning. The first one is risk prioritization, which is expressed by a risk priority number (RPN). The RPN is a product of three factors with equal weight: severity (S), occurrence (O), and detection (D), which may produce equal risk priority for different combinations of S, O, and D. The second is the uncertainties caused by converting linguistic terms into quantitative data. The essential data used in the FMEA strongly depend on subjective experts’ opinions, knowledge, and experience. For decades, various attempts of overcoming these weaknesses have been made, not only by academics but also by industry. The Automotive Industry Action Group (AIAG) and Verband der Automobilindustrie (VDA) have created an FMEA handbook that defines action priority (AP) depending on the combination of severity, occurrence, and detection numbers. This study presents an alternative to risk prioritization in FMEA based on failures of the tasks which analyzed systems perform. The fundamental factors S, O, and D have been redefined in a way to minimize uncertainties. The proposed method has been implemented in the flow control valve and can be easily applied in mechanical engineering applications.

Suggested Citation

  • Joanna Fabis-Domagala & Mariusz Domagala, 2022. "A Concept of Risk Prioritization in FMEA of Fluid Power Components," Energies, MDPI, vol. 15(17), pages 1-14, August.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:17:p:6180-:d:897653
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    References listed on IDEAS

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    1. Joanna Fabis-Domagala & Mariusz Domagala & Hassan Momeni, 2021. "A Concept of Risk Prioritization in FMEA Analysis for Fluid Power Systems," Energies, MDPI, vol. 14(20), pages 1-16, October.
    2. Yuan Guo & Ge Xiong & Liangcai Zeng & Qingfeng Li, 2021. "Modeling and Predictive Analysis of Small Internal Leakage of Hydraulic Cylinder Based on Neural Network," Energies, MDPI, vol. 14(9), pages 1-14, April.
    3. Joanna Fabis-Domagala & Mariusz Domagala & Hassan Momeni, 2021. "A Matrix FMEA Analysis of Variable Delivery Vane Pumps," Energies, MDPI, vol. 14(6), pages 1-14, March.
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    Cited by:

    1. Arpit Sharma & Gajanand Gupta, 2023. "Comparative analysis of conventional and fuzzy FMECA approach for criticality analysis of a vertical roller mill," International Journal of System Assurance Engineering and Management, Springer;The Society for Reliability, Engineering Quality and Operations Management (SREQOM),India, and Division of Operation and Maintenance, Lulea University of Technology, Sweden, vol. 14(4), pages 1395-1420, August.

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