A multifunctional ultra-thin acoustic membrane with self-healing properties for adaptive low-frequency noise control.

ABSTRACT: This paper proposes a novel multifunctional ultra-thin membrane based on a Polyborosiloxane-based gel with stimuli-responsive sound absorption and sound transmission loss (STL) and characterised by excellent self-healing properties. This adaptive behaviour is the result of a dynamically activated phase transition in the membrane's polymeric network which is given by the interaction with the travelling sound pressure wave. The presence and the extent of such phase transition in the material was investigated via oscillatory rheological measurements showing the possibility to control the dynamic response by modifying the Boron content within the polymer. Acoustic analyses conducted at different stimuli responses showed high and dynamic absorption (95%) at the absorption coefficient peaks and

SUBMITTER: Boccaccio M 

PROVIDER: S-EPMC9588055 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature