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Browsing by Subject "positive-displacement pump"

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  • thumbnail.journal.alt
    Item type:Article, Access status: Open Access ,
    Phase trajectory run as a useful tool in axial-piston pump wear detection
    (2010) Stojek, Jerzy
    In this paper the possibility of phase trajectory use in detecting of axial piston pump damage was presented. The wear of main part of pump elements such as: rotor and swash plate have been studied. The phase trajectories were estimated from vibration signal measured on pumps body in third directions. In order to get quantitative specification of analyzed trajectory At/pi parameter was introduced. At the and the relation between At/pi parameter and the wear of the pumps parts have been set.
  • thumbnail.journal.alt
    Item type:Article, Access status: Open Access ,
    The possibility of using pseudo-phase space methods in the analysis of the positive displacement pump wear
    (2012) Stojek, Jerzy
    In this paper the possibility of tracking the evolution of reconstructed pseudo-phase portraits in the diagnosis of positive-displacement pump wear has been presented. The reconstructed pseudo-phase portraits were obtained from vibration signals measured in characteristic places on the pump casing and from the dynamic pressure graphs recorded in the output port of the pump during the passive test experiment. The recorded measurement concerned to tree state of pump condition: in full working order, in part working order and pump with wear out elements.