Laboratory acoustic measurements - Building and environment : Complementary measures

Complementary measures
Laboratory acoustic measurements - Building and environment

Author : Gilles REIGNER

Publication date: December 10, 2003 | Lire en français

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3. Complementary measures

These measurements make it possible to qualify a material, rather than a product as a whole, as we have seen up to now, through a physical characteristic that is important in acoustics.

3.1 Modulus of elasticity measurement

It can be useful to measure the modulus of elasticity E, or Young's modulus, of materials (for example, to determine a material's critical frequency or its impedance).

This means that the plates making up a wall have a "real" modulus of rigidity: $D = \frac{E h^{3}}{12 (1 - υ^{2})}$

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