Dependability of the exemplary technical system for assumed functions of defect density

• Autorzy: Stępień, S. , Grzesik, J.
• Języki publikacji: EN

Abstrakty

EN

The analysis of structural dependability of technical system, especially determining the change in dependability over time, requires knowledge on density function or the understanding of cumulative distribution function of components belonging to the structure. Based on previously registered data concerning component defect, it is relatively easy to establish the average uptime of component as well as the standard deviation for this time. However, defining distribution shape gives rise to some difficulties. Usually, we do not have the sufficient number of data at our disposal to verify the hypothesis regarding the distribution shape. Due to this fact, it is a common practice, depending on the case under consideration, to apply the function of defect density. However, the question arises: Does the incorrect determination of types of distributions of components leads to the big error of estimation results of dependability and system durability? This article will not respond to this question in whole, but one will conduct a comparison of calculation results for a few cases. The calculations were conducted for the exemplary technical system.

Słowa kluczowe

EN

dependability; average uptime; durability

• Czasopismo: Prace Naukowe Instytutu Technicznego Wojsk Lotniczych
• Rocznik: 2016
• Tom: nr 39
• Strony: 151--161
• Opis fizyczny: Bibliogr. 5 poz., rys., tab.

Twórcy

autor

Stępień, S.

• Military University of Technology

autor

Grzesik, J.

• Military University of Technology

Bibliografia

• 1. Grzesik J.: Analiza niezawodności wybranego obiektu technicznego na podstawie przyjętych modeli uszkodzeń. Praca dyplomowa, WAT, Warszawa 2016.
• 2. Zieja M., Ważny M., Stępień S.: Distribution determination of time of exceeding permissible condition as used to determine lifetimes of selected aeronautical devices/systems. “Eksploatacja i Niezawodność – Maintenance and Reliability” 2016, Vol. 18, No. 1.
• 3. Zieja M., Ważny M.: A model for service life control of selected device systems. “Polish Maritime Research” 2014, Vol. 21 No. 2.
• 4. Żurek J., Tomaszek H., Zieja M.: A model to assess lives of selected structural components of an aircraft using time distribution of exceeding a boundary condition – an outline. “Advances in Safety, Reliability and Risk Management”. CRC/Balkema, London 2012.
• 5. Żurek J., Tomaszek H., Zieja M.: Analysis of structural component's lifetime distribution considered from the aspect of the wearing with the characteristic function applied. Safety, Reliability and Risk Analysis: Beyond the Horizon. 22nd Annual Conference on European Safety and Reliability (ESREL 2013). CRC/Balkema, London 2014.

Identyfikatory

DOI

10.1515/afit-2016-0024