The Effect of Direct Field Component on a Statistical Energy Analysis (SEA) Model

Azma Putra; Al Munawir; W.M.F.W. Mohamad; J.I. Mohammad

doi:10.4028/www.scientific.net/AMM.471.279

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 471The Effect of Direct Field Component on a...

The Effect of Direct Field Component on a Statistical Energy Analysis (SEA) Model

Abstract:

Statistical Energy Analysis (SEA) is a well-known method to analyze the flow of acoustic and vibration energy in a complex structure. The structure is divided into subsystems where the energy in each of the subsystem is assumed to be reverberant. This study investigates the application of SEA model in a 'damped' acoustic space where the direct field component from the sound source dominates the total sound field rather than a diffuse field in a reverberant space which the SEA model assumption is based on. A measurement was conducted in a scaled room divided into two acoustic spaces separated by a partition with an opening. Absorbent materials were installed on the room walls and the power injection technique was implemented to obtain the coupling loss factor (CLF) of the system. It is found that correction of the direct field component from the subsystem energy improves the prediction of the CLF of the system.

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Periodical:

Applied Mechanics and Materials (Volume 471)

Pages:

279-284

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.471.279

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Online since:

December 2013

Authors:

Azma Putra, Al Munawir, W.M.F.W. Mohamad, J.I. Mohammad

Keywords:

Acoustic, Coupling Loss Factor, Reverberant Field, Statistical Energy Analysis (SEA)

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