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Janik W.,Wydzial Zarzadzania | Kapron H.,Wydzial Mechaniczny Energetyki i Lotnictwa Politechniki Warszawskiej | Pazdzior A.,Wydzial Zarzadzania | Polecki Z.,Wydzial Elektrotechniki i Informatyki
Rynek Energii | Year: 2013

Investment needs in Polish electrical power engineering sector are largely determined by outdated technologies and production infrastructure, as well as current power engineering policies of the European Union. Investment outlays borne in 2008-2011 by major capital groups were on average lower by 50% than financial means coming from retained profit and amortization. It seems that the reason for this situation is the lack of clearcut development strategies in surveyed entities addressing all identified risks that the electrical power engineering sector is facing resulting from climate policies adopted by the European Union, uncertainties associated with privatization of the power industry in Poland, and predicted changes in power engineering law. Source


Lewitowicz J.,Wydzial Mechaniczny Energetyki i Lotnictwa Politechniki Warszawskiej | Kustron K.,Wydzial Mechaniczny Energetyki i Lotnictwa Politechniki Warszawskiej
Journal of Konbin | Year: 2014

The paper defines the essence of durability characteristics of the designing structure of an airframe in terms of flight safety. Particular attention is drawn to one of the main factors influencing the durability characteristics of the airframe - diagnostics system for the health assessment of the airframe during the process of operation. The effectiveness of the use of integrated solutions to the structure of the airframe providing a continuous assessment of the technical condition is presented. Continuous diagnostics system integrated with the airframe, SHM, is classified as an intelligent solution. This paper presents a model of the behavior of one-type aircraft operating in the air operator's fleet in terms of susceptibility to failure. Justified assumption in the description of this behavior, in the form of a "bathtub curve". The analysis is supported by real data of failures. The benefits of using a continuous diagnostics system integrated with the airframe, SHM, is interpreted in relation to the classical approach with the use of non-destructive testing, NDT, for the three phases of the bathtub curve. © Jerzy Lewitowicz et al. 2014. Source

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