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GRAS References - Volvo
Volvo: Validating the tools for tomorrow’s validations
There are many challenges when 
acquiring experimental aeroacoustic data. One well-known problem is measuring in and around glass, which would be destroyed by drilling to accommodate traditional flush-mounted microphones. Additionally, making alterations by adding a drillable layer for flush mounting will affect the characteristics of the area under test. Avoiding those problems with traditional surface-mounted microphones will likewise affect the environment. These methods all require corrections that can be time and cost intensive computationally or in the wind tunnel. However, there is an alternative.
