Publication detail

Efficient tools for managing uncertainties in design and operation of engineering structures.

Authors: Menčík Jaroslav

Year: 2010

Type of publication: článek ve sborníku

Name of source: WASET 2010

Publisher name: Academic Science Research

Place: Penang

Page from-to: 330 - 335

Titles:

Language	Name	Abstract	Keywords
cze	Účinné nástroje pro zmírňování nejistot při návrhu a provozu inženýrských konstruckí	Jsou ukázány hlavní příčiny nejistot při návrhu, a cesty k jejich zmírnění: FMEA, citlivostní analýza, simulace Monte Carlo, metody robustního designu, použití fuzzy logiky.	Spolehlivost; robustní design; FMEA; metoda Monte Carlo; fuzzy metody; monitorování
eng	Efficient tools for managing uncertainties in design and operation of engineering structures.	Actual load, material characteristics and other quantities often differ from the design values. This can cause worse function, shorter life or failure of the object. The paper shows main causes of the uncertainties and deviations and presents a systematic approach and efficient tools for their elimination or mitigation of consequences. Emphasis is put on the design stage, which is most important for reliability ensuring. Principles of robust design and important tools are explained, including FMEA, sensitivity analysis and probabilistic simulation methods. The lifetime prediction of long-life objects can be improved by long-term monitoring of the load response and damage accumulation in operation. The condition evaluation of engineering structures, such as bridges, is often based on visual inspection and verbal description. Here, methods based on fuzzy logic can reduce the subjective influences.	Reliability; robust design; sensitivity analysis; FMEA; Monte Carlo method; monitoring; fuzzy methods

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