Engineering Mechanics

International Conference

Proceedings Vol. 12 (2006)


ENGINEERING MECHANICS 2006

NATIONAL CONFERENCE WITH INTERNATIONAL PARTICIPATION
May 15 – 18, 2006, Svratka, Czech Republic
;
Editors: Jiří Náprstek and Cyril Fischer

Copyright © 2006 Institute of Theoretical and Applied Mechanics, Academy of Sciences of the Czech Republic, Prague

ISBN 80-86246-27-2 (printed, Extended Abstracts)
ISSN 1805-8248 (printed)
ISSN 1805-8256 (electronic)

list of papers scientific commitee

Failure rate, bathtub curve and reliability of components and systems
J. Menčík
pages 242 - +7p., full text

The paper defines the failure rate and explains its characteristic development in time (bathtub curve). It also explains the difference between the mean time between failures (MTBF) and useful life, and shows the use of failure rate for reliability evaluation and in design. The shape parameter of Weibull distribution for times to failure is related to the bathtub curve and can indicate the basic reasons for some kinds of failures. The second part of the paper is devoted to the methods for reliability increasing, especially in design stage: Failure mode and effect analysis, Fault tree analysis, robust design, computer simulation, testing of all components before assembling, proof testing and diagnostics.


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Text and facts may be copied and used freely, but credit should be given to these Proceedings.

All papers were reviewed by members of the scientific committee.


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