Research into an On-Line Device for Monitoring Contamination in Fluids Using Ultrasonic Techniques

摘要

This report describes the research and development of a prototype ultrasonic device for on-line monitoring of particles within lubricant and hydraulic systems. The technique developed is shown to operate successfully with small hard particles in the range 30-100 micro suspended in a lubricant and in a range of concentrations typical of lubricant and hydraulic systems. The device is shown to offer continuous information on particle size, concentration, and possibly material. Further research needed to realise the full potential of this device, and in particular, overcoming the problems posed by entrained air, is detailed as of November 1984. The research is continuing under a separate MOD contract and results will be reported in 1986.