A Study on Transmission Loss Characteristics of Honeycomb Panel for Offshore Structures

Abstract

Honeycomb panel is consisted of 3 layers that are double-faced sheets and honeycomb-shaped core. It is highly desirable for ship, railway, and aerospace industry. The reason is that honeycomb panel excels in strength and in its weight. However in terms of insulation, it is a little bit insufficient to commonly use sandwich-panel. In this paper, Moor's theory is used to predict sound transmission loss (STL). The theory is assumed that core layer is homogeneous orthotropic. And to calculate STL, it is evaluated in terms of the symmetric and anti-symmetric panel impedances, and the characteristic impedance of air. After that predicted data are compared with experiment data.

Prediction of acoustic wave transmission features of the multilayered plate constructions: A review

“…Jung et al. [418] used Moor’s theory to analyze the STL of a HSP for offshore structures, in which the core layer was homogeneous orthotropic. They also compared their outcomes with those of laboratory tests.…”

On the low frequency acoustic properties of novel multifunctional honeycomb sandwich panels with micro-perforated faceplates

“…In addition to characterizing their structural behavior, many studies have also been carried out to characterize their vibroacoustic behavior. For typical instance, Kumar et al [24], Jung et al [25], Huang and Ng [26], and Ng and Hui [27] presented theoretical models to predict the STL of honeycomb sandwiches, while Griese et al [28] and Feng and Kumar [29] employed numerical and experimental methods to investigate their STL.…”

Numerical prediction and experimental validation of sound transmission loss for different acoustic materials

“…Several studies have been focused on the development and analysis of sound absorbing devices made of a variety of porous materials, for example, fibrous, foams and granular materials etc. Moore and Lyon (1991); Lin et al, (2007); Wang et al, (2010) and Jung et al, (2015) reported the Sound Transmission Loss Characteristics of various acoustics materials. Building acoustics is the complex science of controlling noise in buildings.…”