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    초록·키워드

    This paper deals with the analytical model of sound transmission loss for the fire-resistive panel which is composed of mineral wool with high stiffness. From the comparison of the measurements with the predictions by using both the poro-elastic and the sandwich models, it is concluded that for double panels having the core with stiffness comparable to air stiffness, the accuracy of the predictions mainly depends on how to evaluate the mass-spring-mass resonance. As a result, the core stiffness is a key factor for selecting the analytical model. For the very stiff cores, however, both models result in good agreements with the measurement.

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