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FMEA Papers (page 3):
 

 
Model-based Risk Analysis of Security Critical Systems

The presentation will focus on how to use UML (Unified Modeling Language) behavioural diagrams as input diagrams to risk analysis. The approach will be exemplified by demonstrating how a UML sequence diagram can be used to support HazOp for risk identification. Our approach includes both guidelines on how to construct the input diagrams from existing system documentation and how to perform a risk analysis using a particular input diagram.

FMEA applied to cladding systems ­ reducing the risk of failure (7 pages)
Jeremy Layzell and Stephen Ledbetter, Centre for Window and Cladding Technology, University of Bath, BA2 7AY, UK

Failure Mode and Effects Analysis (FMEA) is a systematic and analytical quality planning tool for identifying and addressing what potentially could go wrong with a product or process. The project ’Failure Mode and Effects Analysis (FMEA) in the cladding industry’ describes the FMEA technique, investigates failures of cladding on a system, component and process level, and maps the cladding supply chain and cladding-related decision making. The level of knowledge of failures and the fragmented industry structure prevents rigorous use of FMEA exempli?ed by other industries. However, a simplied form of FMEA can be performed based on the research ?ndings to prioritize and inform decision-making and facilitate site inspection=supervision.
A new approach for evaluation of risk priorities of failure modes in FMEA (12 pages)
FIORENZO FRANCESCHINI and MAURIZIO GALETTO

This paper presents a method for carrying out the calculus of the risk priority of failures in Failure Mode and Effect Analysis (FMEA). The novelty of the method consists of new management of data provided by the design team, normally given on qualitative scales, without necessitating an arbitrary and artificial numerical conversion. The practical effects of these issues are shown in an application example.

Risk and failure aspects in twin screw extrusion (7 pages)
MARKUS MEYER, Bühler AG, CH-9240 Uzwil, Switzerland

There is a multitude of norms and general guidelines relevant to machine safety. Two possibilities are discussed which allow a systematic analysis of hazards concerning processes, process steps and machines down to their components, and which allow appropriate measures to be defined. It concerns the so-called FMEA and classical safety analysis. Using some examples from the field of extrusion technology, the application of safety analysis is demonstrated and the measures are described that have to be realized to guarantee protection for people.
Keywords: Extrusion, twin screw extruder, food- and feed-extrusion, safety analysis
Modelling and reasoning for failure modes and effects analysis generation (12 pages)
P C Teoh and K Case
Mechanical and Manufacturing Engineering, Loughborough University, Loughborough, Leicestershire, UK Abstract: Failure modes and effects analysis (FMEA) is a quality improvement and risk assessment tool commonly used in industry. It is a living document used to capture design and process failure information. However, the traditional FMEA has its limitations in terms of knowledge capture and reuse. In order to increase its effectiveness, much research has been carried out to find an effective way to provide FMEA generation. However, because of the complexity of the information needed, most of the research concentrates on the application for a specific design domain. This paper reviews various FMEA research studies and modeling and reasoning methods that can be used for generic applications. A new proposal made is based on the `knowledge fragment’ reasoning concept suggested by Kato, Shirakawa and Hori in 2002. FMEA is introduced in the conceptual design stage so as to minimize the risks of costly failure. The method enables new knowledge to be formed using the limited available information in the conceptual design stage. A prototype has been created to evaluate the proposed method. Case studies have been conducted to validate the proposed method. The case studies show that the method is able to provide reliable results with limited information.
Keywords: failure modes
Failure modes analysis of organizational artefacts that protect systems (5 pages)

Designed systems inevitably rely to some degree for their protection on organizational artefacts. These are rules, procedures, instructions, authority structures and so on that are designed, like physical devices, but have organizational rather than physical functions. An analysis was conducted of maritime accidents to investigate how these organizational artefacts were implicated in failure, and a method was then developed to help system designers to perform a failure modes analysis of these artefacts. The proposal is that analyses of failure modes in physical devices should be accompanied by parallel analysis of failure modes in organizational artefacts.
Keywords: failure, failure modes and effects analysis (FMEA), accidents, risk, organizational factors

Project Risk Management Using Project Risk FMEA 8 pages)
GROUP-BASED FAILURE EFFECTS ANALYSIS (18 pages)

This paper presents the multi-based experts Failure Effects Analysis (FEA). The experts’ opinions differ substantially because the experts do not often agree on the level of the failure factors (failure probability, non-detection probability, severity of effect, and expected cost) and the functions/subsystems attributes (e.g., importance). Therefore, conflict always occurs in Group-based Failure Effects Analysis (GFEA). The approach uses fuzzy Risk Priority Category (RPC) and group decision-making techniques to study both the failure effects on the functions/subsystems and the failure risk category with uncertain information. In addition, the approach uses the compensated operators to allow the tradeoffs either among failure factors or among functions/subsystems attributes. A solved example is presented to demonstrate the Group-based Failure Effects Analysis (GFEA) application.
Keywords: Failure Mode and Effects Analysis (FMEA); failure analysis; risk analysis.

An evaluation of failure modes and effects analysis generation method for conceptual design (15 pages)

Failure modes and effects analysis (FMEA) is used in the manufacturing industry to improve product quality and productivity. However, the traditional approach has many
shortcomings that affect its effectiveness and limit its usefulness, especially in the early stages of design. Automating the FMEA report generation process seems to answer some of these problems, and there has been much past and on-going research in this area. However, most of the work is limited to specific applications. This paper proposes a method for FMEA generation for a generic application using minimum information during the conceptual design stage. Prototype software has been created for the proposed method. It has been evaluated using case studies from the design and manufacture of twoway radios. The evaluation revealed the feasibility of the proposal, as well as some weaknesses that need further improvement. Generally, the capability of the method to generate FMEA report with minimum information is demonstrated.

Preventing Medication Errors in Hospitals (6 pages)
Cultivating Knowledge methodically: Improving analysis resolution with DeCoDe and FMEA (7 pages)
Keywords: PLC-adapted development; Synergetic Method Combination; Demand
Compliant Design (DeCoDe); FMEA; Systems Engineering
 
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All you want to know about Failure Mode and Effect Analysis
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