A concept of risk prioritization in FMEA analysis for fluid power systems
Authors:
- Joanna Fabiś-Domagała,
- Mariusz Domagała,
- Hassan Momeni
Abstract
FMEA analysis is a tool of quality improvement that has been widely used for decades. Its classical version prioritizes risk of failure by risk priority number (RPN). The RPN is a product of severity (S), occurrence (O), and detection (D), where all of the factors have equal levels of significance. This assumption is one of the most commonly criticized drawbacks, as it has given unreasonable results for real-world applications. The RPN can produce equal values for combinations of risk factors with different risk implications. Another issue is that of the uncertainties and subjectivities of information employed in FMEA analysis that may arise from lack of knowledge, experience, and employed linguistic terms. Many alternatives of risk assessment methods have been proposed to overcome the weaknesses of classical FMEA risk management in which we can distinguish methods of modification of RPN numbers of employing new tools. In this study, we propose a modification of the traditional RPN number. The main difference is that severity and occurrence are valued based on subfactors. The detection number remained unchanged. Additionally, the proposed method prioritizes risk in terms of implied risk to the systems by implementing functional failures (effects of potential failures). A typical fluid power system was used to illustrate the application of this method. The method showed the correct failure classification, which meets the industrial experience and other research results of failures of fluid power systems.
- Record ID
- CUT85939a732064481b9d6e0c32d6c21662
- Publication categories
- ;
- Author
- Journal series
- Energies, ISSN , e-ISSN 1996-1073, Biweekly
- Issue year
- 2021
- Vol
- 14
- No
- 20
- Pages
- [1-16]
- Article number
- 6482
- Other elements of collation
- rys.; tab.; Bibliografia (na s.) - 14-16; Bibliografia (liczba pozycji) - 42; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 14, Iss. 20, Spec. Iss.
- Substantive notes
- Tyt. Spec. Iss.: Advances in Fluid Power Systems
- Keywords in English
- FMEA, risk analysis, fluid power systems
- DOI
- DOI:10.3390/en14206482 Opening in a new tab
- URL
- https://www.mdpi.com/1996-1073/14/20/6482 Opening in a new tab
- Language
- eng (en) English
- License
- Score (nominal)
- 140
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT85939a732064481b9d6e0c32d6c21662/
- URN
urn:pkr-prod:CUT85939a732064481b9d6e0c32d6c21662
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.