Various possible maintenance strategies could be made up to achieve maintenance objectives such as safety, durability, reliability and the operating economy of machines. Utilization of a plant condition monitoring programme in an industry which has no background on condition-based maintenance requires an appropriate machinery condition monitoring methodology adapting the traditional maintenance system with an efficient maintenance programme. In this research project a plant survey and feasibility study has been implemented through a field study and a condition monitoring pilot study in order to evaluate the condition of machinery under study and the efficiency of an existing maintenance system. Data obtained from the field study were analysed and critical failure problems and the major environmental and operational factors contributing to these failures have been highlighted. A comprehensive oil analysis programme has been carried out on more than one thousand oil samples which had been taken from five major components of construction machinery, i.e., engines, transmission, hydraulic systems, differential and final drive units. The analytical results have been statistically analysed. Initial monitoring guide lines for establishing a condition monitoring programme have been created and the effect of factors, such as operational environment, machine type and make, on analytical results have been investigated. Correlation between various oil analysis readings which could provide useful information for diagnostic purposes have been discussed. The efficiency of an oil analysis condition monitoring programme has also been investigated by comparing the results of machinery which have and have not been continuously monitored. In this work, a simple and quick wear debris test technique (Bottle Method) has been developed for both laboratory and field orientated monitoring programmes. A modified procedure was also developed for evaluating the state and severity of wear in a component. This technique could also be used in field or laboratory monitoring programmes.
| Identifer | oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:638024 |
| Date | January 1995 |
| Creators | Massoudi, A. R. |
| Publisher | Swansea University |
| Source Sets | Ethos UK |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
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