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15 янв. 2022 г. The sound absorption performance of micro-perforated plate (MPP) is mainly restricted by four parameters: cavity depth, aperture, plate thickness and perforation rate.
A combined theoretical and numerical study is carried out to evaluate the sound absorption performance of a micro-perforated sandwich panel with perforated honeycomb-corrugation
In this study, an adjustable sound absorption frequency honeycomb-MPP (ASAFHM) was designed and manufactured with mechanical regulations, which offers convenience for
Based on these principles, our aluminum-rubber (i.e., rigid-elastic) composite perforated honeycomb-corrugation hybrid sandwich panel exhibits both advanced low-frequency, wide
This smart micro-perforated panel (MPP) is investigated experimentally to explore the feasibility and design procedure in practical use. Based on the coupling among the acoustical, electrical,
This study investigates lightweight and efficient candidates for sound absorption to address the growing demand for sustainable and eco-friendly materials in noise attenuation. Juncus
The effect of perforating the honeycomb walls of a honeycomb sandwich panel on the dynamic bending stiffness and sound transmission loss of the panel is
The sound absorption capacity of one type of aluminum alloy foams—trade name Alporas—is studied experimentally. The foam in its as-received cast form contains closed porosities, and
Abstrac This study investigates a dual-cavity resonant composite sound-absorbing structure based on a micro-perforated plate. Using the COMSOL impedance tube model, the effects of
Increasing the thickness of micro-perforated plate can improve the sound absorption capacity of MPP-DSS in the low frequency range, but the width of the sound absorption band will be
ИНТЕРНЕТ27 февр. 2017 г. The proposed PHCH consists of two facesheets and a honeycomb-corrugation (H-C) hybrid core, as shown in Fig. 1.The top facesheet contains periodically distributed perforated holes as a micro
ИНТЕРНЕТ11 июл. 2023 г. Perforated aluminum plate product has good flatness after punching in the machine tool operation, and the installation effect is good; Perforated aluminum plate has high strength and light weight per unit area; The sound absorption and sound elimination effect of the perforated aluminum
ИНТЕРНЕТAbstract The attenuation of low-frequency broadband noise in a light, small form-factor is an intractable challenge. In this paper, a new technology is presented which employs the highly efficient visco-thermal loss mechanism of a micro-perforated plate (MPP) and successfully lowers its frequency response by combining it with
ИНТЕРНЕТ30 сент. 2023 г. Performance of Sound Absorption and Noise Reduction for Dislocation Honeycomb Sandwich Panel With Built-in Coating September 2023 The International Journal of Acoustics and Vibration
ИНТЕРНЕТDOI: 10.1016/j.apacoust.2021. Corpus ; Optimization design and analysis of honeycomb micro-perforated plate broadband sound absorber article{Yan2022OptimizationDA, title={Optimization design and analysis of honeycomb micro-perforated plate broadband sound absorber},
ИНТЕРНЕТ17 мая 2021 г. Since proposed, the perforated honeycomb-corrugation sandwich panel has attracted a lot of attention due to its superior broadband sound absorption at low frequencies and excellent mechanical
ИНТЕРНЕТ1 мар. 2024 г. The sound absorption theoretical model of the micro-perforated plate TPMS sandwich was established using the acoustic-electrical analogy theory and verified experimentally. The factors affecting the sound absorption performance of the micro-perforated plate TPMS sandwich were studied
ИНТЕРНЕТThe sound absorption performance of micro-perforated plate (MPP) is mainly restricted by four parameters: cavity depth, aperture, plate thickness and perforation rate. The concept of change rate of sound absorption coefficient is introduced, which is taken as the measuring standard to judge the influence of
ИНТЕРНЕТ27 сент. 2010 г. Therefore, whereas Takahashi and Tanaka [12] consider a vibrating perforated plate of infinite extent, in the present paper models are developed for the sound radiation from finite perforated plates. The model from Fahy and Thompson [2] of a finite perforated plate set in an equally perforated
ИНТЕРНЕТThe thickness of the micro-perforated plate (MPP) used in sound absorption usually does not exceed 1.5mm due to the difficulty of punching. A dense honeycomb core is presented to replace the micro-perforated plate to improve the sound absorbing performance in low frequency. The perforation ratio is