condition monitoring vibration Articles

  • Bearing fault severity estimation using time–based descriptors for rotating electric machines

    This paper evaluates the bearing fault severity in rotating electric machines based on the time–based descriptors derived from machine vibration signal. Time–based descriptors are independent of bearing dimensions and machine dynamics. To establish the relationship between the time–based descriptor and bearing fault severity, a wide range of defective bearings are examined on an experimental ...

    By Inderscience Publishers

  • Vibration-based approach to lifetime prediction of electric motors for reuse

    This paper is concerned with lifetime prediction of components in washing machines. Vibration signals were measured on electric motors during an accelerated lifetime test ranging from 26.7 to 38.5 simulated years. Loose bearings have initiated air-gap eccentricity and rotor-to-stator rubbing, which resulted in a motor breakdown. Significant frequency bands were identified using a spectral ...

    By Inderscience Publishers

  • The pros and cons of different maintenance strategies

    Whether your business is big or small, conducting effective maintenance on your machinery is essential. But which is the right maintenance strategy for you? That’s a big question, because choosing the wrong one can be catastrophic to you, your business and your staff. In this blog we provide a summary of the different options you have and outline some of the key advantages and disadvantages ...

    By Hansford Sensors

  • Prevention of outage major downtime

    Sulzer Dowding & Mills uses a range of condition-monitoring methods to assess the status of motors and generators to prevent the customer from major downtime and lost production. One of the most common root causes of failure of rotating electrical machines is bearing failure; but the failure mode that has the greatest impact, with regards to downtime and lost production, is failure of the ...

    By Sulzer Ltd.

  • Overview of Rotating Disc Electrode (RDE) Optical Emission Spectroscopy for In-Service Oil Analysis

    Introduction The basis of modern oil analysis is the use of optical emission spectroscopy (OES) to measure the ppm (parts per million) levels of wear metals, contaminants and additives in oil samples. Whatever else an oil lab may measure, a multi-elemental analysis is the core of in-service oil analysis. This paper gives an overview of Rotating Disc Electrode Elemental Spectroscopy and its ...

    By Spectro Scientific

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