English Polski
Akademia Morska w Szczecinie

DSpace Home

DSpace/Manakin Repository

Browsing by Keyword acoustic emission:

  • Bejger, Artur (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2008)
    The presented research results specify the frequencies of an acoustic emission (AE) signal connected with phenomena occurring in the injection system of a diesel engine. From the time-frequency analysis the spectrum density was determined for a phenomenon or changes caused by the wear or damage of a selected injector component
  • Ranachowski, Zbigniew; Pawełek, Andrzej; Drzymała, Piotr; Bonarski, Jan; Lewandowski, Marcin; Ozgowicz, Wojciech (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2014)
    This paper discusses the mechanical properties, microstructure and crystallographic texture of light alloys made on the base of aluminium, magnesium and lithium. An acoustic emission (AE) technique was applied to detect the moment of twinning or slip activation during compression and channel – die tests to extend the comprehension on the nature of the plastic deformation processes occurring in the investigated alloys.
  • Bejger, Artur (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    It is possible to apply an Acoustic Emission (AE) signal for diagnosing the fuel injection system of a marine diesel engine. By the signal decomposition using the wave-let method we can determine significant parameters of injection and some failures of the injection system. For the estimation of operation of selected elements the author propos-es to create a coefficient being a signal measure suitable for quick diagnosis of a failure.
  • Burnos, Tomasz (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    In the paper an attempt was made to find relations between acoustic emission signals measured on parts of the thruster and forces associated with its operation. Presented results will be used in the diagnostic model of marine thrusters.
  • Bejger, Artur (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    This paper introduces the partial results of research, showing possibilities of acous-tic emission use to the diagnosis of the fuel injection systems of marine diesel engines. By means of a suitable signal process we can get to the source of acoustic emission signals dependent on varying kinds of faults in the injection system
  • Bejger, Artur; Burnos, Tomasz (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    In the article an attempt was made to use some time-frequency methods for the analysis of acoustic emission signals. Concerning the field of interests measurements were taken of some ship machinery and equipment. Signals coming from the fuel injec-tion systems of ship diesel engines, roll bearings and gear were analyzed. They were pre-selected in regard to their usefulness for diagnostic purposes.
  • Burnos, Tomasz (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    The paper presents the concept of creation of a diagnostic model of thruster based on signal estimates, generated during the operation of the aggregate. Possible use of time-frequency details for individual elements of machine are taken under consideration.
  • Bejger, Artur (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    The paper presents the results of acoustic emission signals application for diagnos-ing defects detecting signal sources in the fuel injection system of marine diesel engines. Changes of acoustic emission signals are sensitive to the working of the injection pump and the condition of injectors. The emitted signals are dependent on their technical con-dition.

Search repository

Advanced Search

Browse

My Account

RSS Feeds