Eco-Friendly Carbon Fiber Woven Fabric-Based Sound Absorbers with Tunable Air Cavity Structures for Advanced Noise Control
Jung-Hwan Oh, Yong-Won Kwon
TL;DR
This paper presents an eco-friendly carbon fiber fabric with tunable air cavities that effectively absorbs sound and reduces noise in lightweight structures.
Contribution
The novel contribution is the development of tunable air cavity structures in carbon fiber composites for lightweight, broadband sound absorption.
Findings
Acute angle stacking improves layer-to-layer impact noise attenuation by up to ∼3 dB.
Cavity-integrated CFFCs achieve high absorption levels (SAC max ≤ 0.99) in an ultrathin profile (<7 mm).
Full system tests show up to ∼35 dB reduction in transmitted sound pressure in a two-story house model.
Abstract
This study introduces an eco-friendly class of carbon fiber woven fabric composites (CFFCs) incorporating tunable air cavity architectures to achieve lightweight broadband acoustic absorption. By systematically varying the layer number, fiber orientation, and cavity configuration, we establish a clear structure–property–performance relationship that governs resonance tuning, viscous–thermal dissipation, and air-flow tortuosity. Acute angle stacking enhances in-plane shear deformation and frictional damping, producing up to ∼3 dB improvement in layer-to-layer impact noise attenuation, as confirmed through interfacial impact tests. Incorporation of single or multiple air cavity units further shifts the resonance to lower frequencies and achieves high absorption levels (SAC max ≤ 0.99) within an ultrathin (<7 mm) profile. Full system impact noise transmission measurements in a two-story…
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Taxonomy
TopicsAcoustic Wave Phenomena Research · Cellular and Composite Structures · Aeroelasticity and Vibration Control