Automotive Research Association of India
Research Institute of the Automotive Industry with the Ministry of Heavy Industries & Public Enterprises, Govt. of India
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R&D Services » Noise, Vibration & Harshness

Overview
Vehicle NVH
Powertrain NVH
Modal Analysis
Acoustic Materials
Non Automotive Applications
Acoustic Materials
Acoustic Materials for Noise Control Treatments
 
Normal Incidence Sound Absorption Coefficient using Two Microphone Impedance Tube as per ISO 10534/ASTM 1050.
 
Random Incidence Sound Absorption Coefficient using Reverberation Chamber as per ISO 354 / ASTM C 423/ SAE J1400.
  Air- borne Sound Transmission Loss using two Reverberation Chambers as per ISO140-3 / ASTM E 90.
  Flow Resistance of porous materials as per ASTM C522-03 / ISO 9053.
 
Vibration Damping properties of visco-elastic materials using Oberst bar method as per ASTM E756 / SAE J1637.
Measurement of Sound absorption coefficient of Automotive trim, foam and fiber - head liner, carpet, engine hood insulation :

Measurement of Sound transmission loss of automotive trim, fire wall, carpet, glass, composite materials:

Simulation of Acoustic Materials-LMS VIOLIN, Transfer Matrix Methods:
  Porosity Measurement-Based on Boyle’s Law.
  Flow Resistivity Measurement-ASTM C522-3.
  Tortuosity and Characteristic Lengths-By Inverse Characterization (Genetic Algorithm).
  Elastic Properties by Quasi-static Methods. 
 
Simulation for design of multilayer noise control treatments using physical and elastic parameters
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