Noise, vibration and harshness testing and simulation

Ricardo has provided Noise and Vibration Services for over 40 years specialising in Automotive, Marine and other transport industries.

• Ricardo NVH has teams based at Shoreham, Leamington, Detroit, Italy and Germany
• Powertrain NVH Specialists:
  • 14 NVH engineers based at Shoreham

Three powertrain anechoic test facilities

• Typical specification of these cells
  • Dimensions: 7m x 6m x 3.5m
  • Cut-off: 100Hz (ISO 3745)
  • Wedge Spec: 0.7m Fire Resistant Graphite Loaded Open Cell Foam (DX30F)
  • Background Noise: PNC35
  • Absorption Capabilities:
    • Borghi & Severi FE900
    • 4100Nm from 400rpm
    • 662kW @ 1500rpm
    • 4000rpm max shaft speed
  • Motoring capability:
    • McClure DC3250C DC Motor
    • 350Nm @2400rpm

One vehicle anechoic test facility

• Anechoic treatment
  • IAC Metadyne perforated metallic wedge with acoustically absorbent filling
  • 63Hz anechoic cut-off frequency
• Dynamometer
  • Fully-regenerative (four quadrant) AC drive system
  • Dynamotive DCS.7 control system for road load simulation, speed and torque control
  • Motoring up to 300kW 5300Nm
  • Absorbing up to 340kW 6100Nm
  • Speed up to 200km/h
  • Axle capability up to 2000Kg
  • 200kW cell ventilation heat rejection
  • High intensity 500 lux LED lighting