Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Enhancement of acoustic absorption coefficient of foams using active feedback control.

The Journal of the Acoustical Society of America·2025
Same author

Microstructured large-area photoconductive terahertz emitters driven at high average power.

Optics express·2024
Same author

Assessing the Utility of the DAPT Score and PRECISE-DAPT Score in Determining the Appropriateness of Dual Antiplatelet Therapy in Patients With Acute Myocardial Infarction/Percutaneous Coronary Intervention.

Cardiology research and practice·2024
Same author

Chitosan-Based Nanoformulations: Preclinical Investigations, Theranostic Advancements, and Clinical Trial Prospects for Targeting Diverse Pathologies.

AAPS PharmSciTech·2024
Same author

Sodium glucose cotransporter 2 inhibitors in the management of heart failure: Veni, Vidi, and Vici.

World journal of cardiology·2024
Same author

Insights into the seasonal variation, distribution, composition and dynamics of microplastics in the Ganga River ecosystem of Varanasi City, Uttar Pradesh, India.

Environmental monitoring and assessment·2024

Related Experiment Video

Updated: Aug 30, 2025

Fabrication and Characterization of Thickness Mode Piezoelectric Devices for Atomization and Acoustofluidics
10:39

Fabrication and Characterization of Thickness Mode Piezoelectric Devices for Atomization and Acoustofluidics

Published on: August 5, 2020

7.0K

Enhanced absorption in structural acoustic silencers using piezo-shunting.

Chappe Narsing Suryakant1, Abhishek Singh1, Rahul Ramdas1

  • 1Department of Mechanical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai, India 400076.

The Journal of the Acoustical Society of America
|September 1, 2022
PubMed
Summary

Structural acoustic silencers (SAS) can improve noise reduction by increasing absorption-based transmission loss (TL). Piezo-shunting effectively enhances plate damping, leading to better sound absorption and reduced reflected noise in ducts.

More Related Videos

Microparticle Manipulation by Standing Surface Acoustic Waves with Dual-frequency Excitations
06:51

Microparticle Manipulation by Standing Surface Acoustic Waves with Dual-frequency Excitations

Published on: August 21, 2018

7.1K
Fabrication of Surface Acoustic Wave Devices on Lithium Niobate
07:55

Fabrication of Surface Acoustic Wave Devices on Lithium Niobate

Published on: June 18, 2020

12.2K

Related Experiment Videos

Last Updated: Aug 30, 2025

Fabrication and Characterization of Thickness Mode Piezoelectric Devices for Atomization and Acoustofluidics
10:39

Fabrication and Characterization of Thickness Mode Piezoelectric Devices for Atomization and Acoustofluidics

Published on: August 5, 2020

7.0K
Microparticle Manipulation by Standing Surface Acoustic Waves with Dual-frequency Excitations
06:51

Microparticle Manipulation by Standing Surface Acoustic Waves with Dual-frequency Excitations

Published on: August 21, 2018

7.1K
Fabrication of Surface Acoustic Wave Devices on Lithium Niobate
07:55

Fabrication of Surface Acoustic Wave Devices on Lithium Niobate

Published on: June 18, 2020

12.2K

Area of Science:

  • Acoustics
  • Materials Science
  • Mechanical Engineering

Background:

  • Structural acoustic silencers (SAS) reduce noise in ducts via reflection and absorption.
  • Absorption-based transmission loss (TL) is preferred over reflection-based TL to minimize back-pressure.
  • Increasing plate damping is key to enhancing absorption in SAS.

Purpose of the Study:

  • To investigate the enhancement of absorption-based TL in SAS using piezo-shunting.
  • To analyze the impact of piezo-shunting on the damping of flexible plates in acoustic silencers.
  • To model and understand the relationship between piezo-shunting, plate impedance, and power absorption.

Main Methods:

  • Experiments were conducted on a custom-made SAS using copper plates of varying thicknesses.
  • Piezo-shunting was implemented by connecting an electrical resistor to a piezoelectric bimorph attached to the copper plate.
  • A model was used to analyze the effect of piezo-shunting on the TL and power fractions.

Main Results:

  • Piezo-shunting significantly increased the effective damping of the copper plates.
  • The fraction of absorbed acoustic power was increased, while the reflected power fraction decreased.
  • The study analyzed the influence of the electrical resistor value and plate impedance on these fractions.

Conclusions:

  • Piezo-shunting is an effective method for improving absorption-based TL in structural acoustic silencers.
  • This technique offers a way to enhance sound absorption without increasing undesirable back-pressure.
  • The findings demonstrate a practical approach to optimize SAS performance through enhanced material damping.