Today, as systems become more and more complex, safety is becoming critical. Reducing the risk to an acceptable level with a complete risk management activity is necessary. This paper more precisely focuses on risk analysis; its demonstrate how the use of a risk analysis technic such as the Failure Modes, Effects and Criticality Analysis (FMECA) can be coupled to a object oriented system modeli...

the paper presents a multi-factor decision-making approach for prioritizing failure modes as an alternative to traditional approach of failure mode and effect analysis (fmea). the approach is based on the ‘technique for order preference by similarity to ideal solution’ (topsis). the priority ranking is formulated on the basis of six parameters (failure occurrence, non-detection, maintainability...

The Failure Mode and Effect Analysis (FMEA) is often used to improve a system’s reliability. This paper proposes new approach that aims overcome the most critical defects of traditional FMEA. methodology combines Entropy Best Worst Method (BWM) with EDAS System Dynamics, FMECA: EN-B-ED Dynamic FMECA. main innovation point proposed work presence an unknown factor (Cost) allows obtain objective w...

Currently, intelligent ships are still in the early stages of development terms autonomous navigation and berthing, so almost no source fault data can be obtained. Conducting an in-depth analysis failure modes is critical to optimizing design smart ensuring their normal safe navigation. In this paper, fixed-weight Failure Mode Effects Criticality Analysis (FMECA) combined with decision-making t...

Accident analysis in radiotherapy highlighted the need to increase quality assurance (QA) programs by identification of failures/errors with very low probability (rare event) but severe consequences. In this field, a Failure Mode, Effects and Criticality Analysis (FMECA) technique, used various industrial processes rank critical events, has been met much interest. The literature describes diffe...

Abstract Heavy-duty machine tools are composed of many subsystems with different functions, and their reliability is governed by the reliabilities these subsystems. It important to rank weaknesses identify weakest subsystem optimize products improve reliabilities. However, traditional ranking methods based on failure mode effect critical analysis (FMECA) does not consider complex maintenance pr...

This study introduces the fuzzy theory approach as an enhancement to traditional failure mode, effect, and criticality analysis (FMECA) method in order address its limitations, which primarily stem from subjectivity a lack of quantitative analysis. The proposed method, referred FMECA improvement based on comprehensive evaluation, aims quantify qualitative aspect provides detailed outline proced...

Because of the many limitations traditional failure mode effect and criticality analysis (FMECA), an integrated risk assessment model with improved FMECA, fuzzy Bayesian networks (FBN), evidence reasoning (ER) is proposed. A new characterization parameter system constructed in model. rule base based on confidence structure by combining set theory expert knowledge, BN technology used to realize ...

This paper provides a method based on information theory for risk analysis and evaluation. A basic method to construction site risk evaluation by Shannon entropy is used. Safety and technical risk of the building construction process has been calculated by Shannon’s entropy which provides information of the system, of various kinds under uncertainties. The method has been applied to a case stud...