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Progressive Worst Case Scenario Analysis: Improving Functional Safety by Bridging Gaps in FMEA for Effective Implementation of ISO 26262
Technical Paper
2016-01-8132
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Reliability engineering methods are used to assess risk and eliminate hazards by estimation, elimination, and management of risks of failures. The ISO 26262 functional safety standard gives detailed guidance on reliability engineering methods like Failure Mode and Effect Analysis (FMEA) [7], Fault Tree Analysis (FTA) [8] [2], and etc. While, there are many methods available for reliability engineering; no single method is foolproof for securing safety by eliminating hazards completely. Out of these methods, FMEA is widely being used as an integral part of the product development life cycle [10]. In this method, failure modes of individual components are analyzed considering one failure at a time. FMEA is an efficient method for analyzing failures in simple systems. For complex systems, FMEA becomes impractical. It is also difficult to consider variables in FMEA.
FMEA provides fairly detailed recommended action items to avoid failures and eliminate hazards in average working conditions [3]. But, when exposed to worst case situations, FMEA recommended action items fail to avoid failures in a system. While designing a product, many times it is hard to imagine what design parameters shall be considered to ensure that the product will survive through extreme conditions. The intent of this paper is to propose the use of Progressive Worst Case Scenario Analysis (PWCSA) as an extension of FMEA. The method is redefined to be more aligned with FMEA, and FMEA being a successive stage. However, this method can also be used in isolation i.e. without using FMEA as a prior stage.
This paper defines PWCSA as a structured & measurable probabilistic process for residual risk assessment and containment to facilitate hazard elimination. Worst case testing is usually carried out on individual components of the system. If PWCSA is incorporated into ISO 26262 as a part of the reliability engineering method, it can help to enhance functional safety by influencing specifications for expected performance and safety standards.
Authors
Citation
Pawar, S., "Progressive Worst Case Scenario Analysis: Improving Functional Safety by Bridging Gaps in FMEA for Effective Implementation of ISO 26262," SAE Technical Paper 2016-01-8132, 2016, https://doi.org/10.4271/2016-01-8132.Also In
References
- SAFETY ADVISORY: NHTSA Urges Drivers to Check Tires During Hot Weather, NHTSA 20-13 June 28 2013 http://www.nhtsa.gov/About+NHTSA/Press+Releases/SAFETY+ADVISORY:+NHTSA+Urges+Drivers+to+Check+Tires+During+Hot+Weather
- Marshall Jane Dr Product Excellence using 6 Sigma Module http://www2.warwick.ac.uk/fac/sci/wmg/ftmsc/modules/modulelist/peuss/slides/section_11b_fta_lecture_slides_compatibility_mode.pdf
- Understanding and Applying the Fundamentals of FMEAs Carlson Carl S. ReliaSoft Corporation 1450 S. Eastside Loop, Tucson, Arizona 85710 USA
- Electrical Design Worst-Case Circuit Analysis: Guidelines and Draft Standards (Rev A) June 3 2013 Lenertz Brian A. Electronics and Power Systems Department, Electronics Engineering Subdivision, Electronics and Sensor Division
- ISO 26262 Road vehicles -- Functional safety, International Standard ISO/FDIS 26262-2 2011
- Extreme Value Analysis: an Introduction Myriam Charras-Garrido , Pascal Lezaud Journal de la Societe Francaise de Statistique, Societe Françoise de Statistique et Societe HAL Id: hal-00917995Mathematique de France 2013 154 2 66 97 https://hal-enac.archives-ouvertes.fr/hal-00917995 12 Dec 2013
- SAE International Surface Vehicle Recommended Practice Potential Failure Mode and Effects Analysis in Design (Design FMEA), Potential Failure Mode and Effects Analysis in Manufacturing and Assembly Processes (Process FMEA), and Potential Failure Mode and Effects Analysis for Machinery (Machinery FMEA) SAE Standard J1739 Aug. 2002
- Fault Tree Analysis (FTA): Concepts and Applications Bill Vesely NASA HQ https://www.hq.nasa.gov/office/codeq/risk/docs/ftacourse.pdf
- SAE Technical Literature Abstract 20 4 Society of Automotive Engineers, INC.
- Failure Modes and Effects Analysis (FMEA) Description, When to Use, Procedure, Example, and Considerations ASQ Quality Press
- Firestone tire recalled August 9 2000 http://money.cnn.com/2000/08/09/news/firestone_recall/
- Effective FMEAs: Achieving Safe, Reliable, and Economical Products and Processes using Failure Mode and Effects Analysis (Quality and Reliability Engineering Series) Carlson Carl S. A John Wiley & Sons Inc, Publication
- Fatal truck crash inquest: Police say brakes were overheated, ineffective, By court reporter Loukas Founten 16 Oct 2014 http://www.abc.net.au/news/2014-10-16/fatal-truck-crashbrakes-overheated-police-say/5819954
- Trucking Accidents Caused by Brake and Tire Failure http://www.nolo.com/legal-encyclopedia/trucking-accidents-brake-tire-failure-30239.html
- National Transportation Safety Board Washington, D.C. 20594 October 26 1998 http://www.ntsb.gov/safety/safety-recs/recletters/A98_113_118.pdf
- IEC 60812 2006 Analysis techniques for system reliability - Procedure for failure mode and effects analysis (FMEA) https://webstore.iec.ch/preview/info_iec60812%7Bed2.0%7Den_d.pdf
- Model Driven Dependability Assessment of Software Systems Bernardi , S ; Merseguer , J. D.C. 2013 55 http://www.springer.com/978-3-642-39511-6