The vibrations generated by a rotating machine correspond to the dynamic efforts generated by moving parts. Analysis of the vibration pattern makes it possible to assess the operating condition of the machine and detect defects at an early stage.

The maintenance of machines through analysing vibrations is called "predictive" as it allows improved management of defects by taking action before the failure point, during scheduled halts, by reducing the risk of untimely production stoppages resulting from a sudden breakdown.

Analysis on a compressor Analysing a ventilator Our intervention method for vibration test: An on-site visit enables us to work with the production and maintenance services to identify the machines which are vital for production Measurement points are defined for each machine, usually on bearings All the characteristics of the kinetic elements are listed: rotation speed, number of gear teeth, bearing references, etc. The vibration levels on the machines followed up are recorded regularly (the intervention frequency depends on the type of machine and the speed at which defects develop). Vibrations are recorded on site by a computerized recorder. The production does not need to be halted while readings are taken. Recordings are analysed in the lab. Defects affecting the machine are identified and their severity assessed. A measurement report is submitted after each visit. It sets out the defects found on each machine monitored and provides advice as to the severity of the defects, thus giving you the opportunity to take corrective action.

Our lab in France for vibration analysis makes it possible to diagnose: A misaligned or unbalanced drive shaft The condition of bearings and gearings Tightening defects Lug loosening Belt defects Electromagnetic perturbations on a motor The condition of ventilator or pump blades The overall operating condition of a machine by comparing with admissible vibration levels. Vibration pattern Predictive maintenance makes it possible to detect bearing defects at an early stage Equipment: Various accelerometers of different sizes and sensitivities Mobile computerized recorder