Non-destructive mapping of stress and strain in soft thin films through sound waves

Abstract

Measuring the in-plane mechanical stress in a taut membrane is challenging, especially if its material parameters are unknown or altered by the stress. Yet being able to measure the stress is of fundamental interest to basic research and practical applications that use soft membranes, from engineering to tissues. Here, we present a robust non-destructive technique to measure directly in-situ stress and strain in soft thin films without the need to calibrate material parameters. Our method relies on measuring the speed of elastic waves propagating in the film. Using optical coherence tomography, we verify our method experimentally for a stretched rubber membrane, a piece of cling film (about 10 μm thick), and the leather skin of a traditional Irish frame drum. We find that our stress predictions are highly accurate and anticipate that our technique could be useful in applications ranging from soft matter devices to biomaterial engineering and medical diagnosis.

Metadata

Item Type:	Article
Authors/Creators:	Li, G.-Y. https://orcid.org/0000-0002-5939-9293 Gower, A.L. https://orcid.org/0000-0002-3229-5451 Destrade, M. https://orcid.org/0000-0002-6266-1221 Yun, S.-H. https://orcid.org/0000-0002-8176-9916
Copyright, Publisher and Additional Information:	© The Author(s) 2022. Open Access: This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
Keywords:	Bioengineering
Dates:	Published: 17 September 2022 Published (online): 17 September 2022 Accepted: 24 August 2022
Institution:	The University of Sheffield
Academic Units:	The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Mechanical Engineering (Sheffield)
Funding Information:	Funder Grant number ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL EP/R005001/1 ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL EP/V012436/1
Depositing User:	Symplectic Sheffield
Date Deposited:	26 Sep 2023 11:54
Last Modified:	26 Sep 2023 11:56
Status:	Published
Publisher:	Springer Science and Business Media LLC
Refereed:	Yes
Identification Number:	10.1038/s42005-022-01000-3
Related URLs:	Author
Open Archives Initiative ID (OAI ID):	oai:eprints.whiterose.ac.uk:203618

Download

Published Version

Filename: s42005-022-01000-3.pdf

Licence: CC-BY 4.0

CLICK TO DOWNLOAD

CORE (COnnecting REpositories)

Non-destructive mapping of stress and strain in soft thin films through sound waves

Abstract

Metadata

Download

Published Version

Export

Statistics