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http://dx.doi.org/10.9766/KIMST.2018.21.3.288

Experimental Study on Acoustic Absorption and Transmission Characteristics of Aluminium and Sandwich Composite Structure  

Lee, Yoon-kyu (The 1st Research and Development Institute, Agency for Defense Development)
Lee, Dae-oen (The 1st Research and Development Institute, Agency for Defense Development)
Jin, Byung-Dae (The 1st Research and Development Institute, Agency for Defense Development)
Lee, Dong-min (The 1st Research and Development Institute, Agency for Defense Development)
Publication Information
Journal of the Korea Institute of Military Science and Technology / v.21, no.3, 2018 , pp. 288-294 More about this Journal
Abstract
Recently, as the speed and performance of the launcher and the missile have been improved, it is necessary to consider the acoustic load of launching and flight in initial design step. In this paper, an experimental study on acoustic absorption and transmission characteristics of aluminium vs. sandwich composite structures were conducted. The overall noise reduction was evaluated by performing an acoustic test in the reverberation room, and the acoustic absorption and transmission loss of the structures were analyzed by conducting the sound absorption test inside the structure.
Keywords
Noise Reduction; Acoustic Absorption; Acoustic Transmission Loss;
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