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MODELLING THE EFFECT OF VIBRATION ON THE SOUND ABSORPTION PERFORMANCE OF GREEN SOUND ABSORBER USING WAVE PROPAGATION TECHNIQUE.

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Academic year: 2017

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Figure 1. Mechanical system of a NF – solid panel
Figure 5. Absorption coefficient of a NF – rigid backing system (t2,1=1mm,σ=90%, D=50mm )
Figure 6. Absorption coefficient of NF – rigid backing system

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