Skip to main content

FPN: Noise in hydraulic systems

Our course introduces you to the topic of how high-power density of hydraulic systems can become a problem when noise and vibrations need to be minimised.


This specialist course can be run on customer request either in Bath or at your premises. We also run it as part of our course programme if there is enough interest - contact us if you want to be informed about any future dates. The course provides a description of the mechanisms by which fluid-borne noise is generate, transmitted and mitigated. It covers:

  • experimental methods for measuring the fluid-borne noise characteristics of pumps and other components
  • methods for reducing noise
  • methods for prediction the fluid-borne characteristics of hydraulic circuits

Who should apply

Our course is for professional engineers, hydraulic system designers, and specialists concerned with noise problems. You should be familiar with hydraulic systems and possess good mathematical knowledge.

Prices and Dates

All our course prices and dates are listed on our Centre for Power Transmission & control cpd courses for industry page.

Course objectives

When you complete the course, you should:

  • understand the problems associated with noise in hydraulic systems
  • be familiar with common noise terms, interpret noise measurements, and know how to represent the results in different ways
  • be able to analyse the causes for fluid borne noise, and take corrective action
  • understand the behaviour of waves in a pipe both mathematically and qualitatively
  • appreciate the effect of cavitation
  • use flow-impedance modelling (FIM) for predicting the pressure and flow ripple in hydraulic systems
  • be familiar with the secondary Source method for measuring pump fluid-borne noise characteristics.

Course contents

Details of the course content can be changed depending on the delegates' interests. It covers core topics including:

  • overview of hydraulic systems
  • introduction to noise in hydraulic systems
  • pump flow ripple
  • wave propagation
  • cavitation
  • introduction to flow-impedance modelling (FIM)
  • fluid borne noise reduction
  • rating of pump fluid borne noise
  • pressure transducers, accelerometers and flowmeters
  • measuring fluid-borne noise characteristics using the secondary source method
  • airborne and structure noise
  • measurement of impedance and transfer matrix of components
  • flow/impedance modelling
  • FIM Case Study


If you have any questions, please contact us.

On this page