Investigation of a dynamic active/passive noise cancellation of polyborosiloxane thin membrane gel.

Konstantinos Myronidis, Gian-Piero Malfense Fierro, Michele Meo, Fulvio Pinto

Research output: Chapter or section in a book/report/conference proceedingChapter in a published conference proceeding

50 Downloads (Pure)

Abstract

This study proposes a multifunctional, thin membrane gel based on a formulation of PDMS and boron. The proposed gel offers a dynamic passive stimuli-responsive sound absorption at low frequencies, which can be transformed to active noise cancellation with the use of a secondary sound source. The passive behaviour of the proposed material is the result of a dynamic phase transition in the material’s polymeric network, activated by the interaction with the travelling sound pressure wave. The presence and extent of the phase transition in the material was investigated via Fourier transform infrared spectroscopy and oscillatory rheological measurements, where it was found that the amount of boron in the gel has a crucial role on the occurrence of the phase transition and consequently on its acoustic performance. The passive scenario results revealed a high and dynamic absorption of approximately 80% at the absorption coefficient peaks, which dynamically shifted to lower frequencies while sound amplitudes were increased. The active noise cancellation was successfully demonstrated at the lower frequencies range, as the occurrence of the phase transition was actively controlled via the sound pressure wave introduced. The aforementioned phase transition was intensified, with energy consumed in this process, resulting in a dynamic noise cancellation. These results demonstrated that the proposed gel membrane material can be used to develop active/passive deep subwavelength absorbers with unique properties, which can dynamically tune their performance in response to external stimuli, and that can be further controlled/activated with the use of mechanical transducers.
Original languageEnglish
Title of host publicationActive and Passive Smart Structures and Integrated Systems XVII
EditorsJinkyu Yang
Place of PublicationCalifornia, U.S.A.
PublisherSPIE
Number of pages14
Volume12483
ISBN (Electronic)9781510660731
ISBN (Print)9781510660731
DOIs
Publication statusPublished - 28 Apr 2023
EventSPIE Smart Structures + Nondestructive Evaluation: Active and Passive Smart Structures and Integrated Systems XVII - Long Beach, Los Angeles, USA United States
Duration: 12 Mar 202316 Mar 2023

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12483
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceSPIE Smart Structures + Nondestructive Evaluation
Country/TerritoryUSA United States
CityLos Angeles
Period12/03/2316/03/23

Bibliographical note

Funding Information:
The work in this publication was conducted under the project with title “Aegis, Advanced Energy-Absorption Polymer for Impact-Resistant Smart Composites” funded by the Engineering and Physical Sciences Research Council [EP/T000074/1].

Keywords

  • Active/Passive System
  • Low Frequency Range
  • Shear Stiffening Gel
  • Sound absorption

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Applied Mathematics
  • Electrical and Electronic Engineering
  • Computer Science Applications

Fingerprint

Dive into the research topics of 'Investigation of a dynamic active/passive noise cancellation of polyborosiloxane thin membrane gel.'. Together they form a unique fingerprint.

Cite this