Acoustic properties and investigation of acoustic materials used in automotive industry

Todays NVH properties in automotive industry become incrementally the most important factor on customer satisfaction. That makes automobile manufacturers investigate all types of acoustic materials and their properties to be able to take place in automotive market. During design, prototype and launch periods vehicle NVH is always has a big effect on launch period milestones and vehicle enginering teams of big car manufacturer work on alternative materials to get the optimum design of the vehicle NVH properties. Objective and subjective evaluations show the vehicle NVH properties. During design phase teams are working on CAE tools, at prototype phase vehicles are tested in 'Wind Tunnel' and subjective evaluations by trained auditors on test tracks. This project aims are providing information about noise and vibration sources at automobiles which make the customer dissatisfaction, introduction to accoustic materials used on automobiles and their assembly strategies, providing information about the acoustic materials properties and effects on acoustic parameters, at the end of the project, investigation of the material properties effects on accoustic parameters by using alpha cabin.