Fully synchronized acoustomechanical testing of skin: Biomechanical measurements of nonclassical nonlinear parameters

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F17%3A00314551" target="_blank" >RIV/68407700:21340/17:00314551 - isvavai.cz</a>

Result on the web

—

DOI - Digital Object Identifier

—

Result language

angličtina

Original language name

Fully synchronized acoustomechanical testing of skin: Biomechanical measurements of nonclassical nonlinear parameters

Original language description

An accurate description of soft biomechanical tissues is an open problem in many fields, with applications ranging from medical imaging and characterisation of tissue aging to medical simulations. Skin is one of these highly complex tissues which is difficult to model due to its nonclassically nonlinear effects such as hysteresis, memory effects and viscoelasticity. A promising model for describing the mechanical behaviour of skin is the Preisach-Mayergoyz model. The goal of this paper is to present a fully synchronised acoustomechanical method for finding the elasticity and hysteresis parameters of an ex vivo skin sample. The coupled test equipment enables to measure nonclassical nonlinearity of porcine skin using a novel setup for mechanically loading a test object and conducting ultrasonic measurements in a synchronised fashion. The skin sample is uniaxially loaded into quasistatic tension with a sinusoidal load path of increasing amplitude and offset. Ultrasonic tests up to 5 MHz range are conducted perpendicularly, through the thickness of the sample. The mechanical extension forms the hysteresis loops in the strain-stress plane while the ultrasonic testing equipment with the Time Reversal - Nonlinear Elastic Wave Spectroscopy signal processing method focuses the high intensity acoustic energy to measure the hysteresis and elasticity parameters of skin under various mechanical loadings. The multiscale properties of the skin are revealed from the hysteresis measurements from both synchronised data sets. This test setup could also used for other kinds of nonclassically nonlinear materials.

Czech name

—

Czech description

—

Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20301 - Mechanical engineering

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

the 24th International Congress on Sound and Vibration

ISBN

978-1-906913-27-4

ISSN

2329-3675

e-ISSN

—

Number of pages

8

Pages from-to

1-8

Publisher name

IIAV - International Institute of Acoustics and Vibration

Place of publication

Auburn

Event location

London

Event date

Jul 23, 2017

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

—