Measurement of the force–displacement response of in vivo human skin under a rich set of deformations

Handle URI:
http://hdl.handle.net/10754/598781
Title:
Measurement of the force–displacement response of in vivo human skin under a rich set of deformations
Authors:
Flynn, Cormac; Taberner, Andrew; Nielsen, Poul
Abstract:
The non-linear, anisotropic, and viscoelastic properties of human skin vary according to location on the body, age, and individual. The measurement of skin's mechanical properties is important in several fields including medicine, cosmetics, and forensics. In this study, a novel force-sensitive micro-robot applied a rich set of three-dimensional deformations to the skin surface of different areas of the arms of 20 volunteers. The force-displacement response of each area in different directions was measured. All tested areas exhibited a non-linear, viscoelastic, and anisotropic force-displacement response. There was a wide quantitative variation in the stiffness of the response. For the right anterior forearm, the ratio of the maximum probe reaction force to maximum probe displacement ranged from 0.44Nmm-1 to 1.45Nmm-1. All volunteers exhibited similar qualitative anisotropic characteristics. For the anterior right forearm, the stiffest force-displacement response was when the probe displaced along the longitudinal axis of the forearm. The response of the anterior left forearm was stiffest in a direction 20° to the longitudinal axis of the forearm. The posterior upper arm was stiffest in a direction 90° to the longitudinal axis of the arm. The averaged posterior upper arm response was less stiff than the averaged anterior forearm response. The maximum probe force at 1.3mm probe displacement was 0.69N for the posterior upper arm and 1.1N for the right anterior forearm. The average energy loss during the loading-unloading cycle ranged from 11.9% to 34.2%. This data will be very useful for studying the non-linear, anisotropic, and viscoelastic behaviour of skin and also for generating material parameters for appropriate constitutive models. © 2011 IPEM.
Citation:
Flynn C, Taberner A, Nielsen P (2011) Measurement of the force–displacement response of in vivo human skin under a rich set of deformations. Medical Engineering & Physics 33: 610–619. Available: http://dx.doi.org/10.1016/j.medengphy.2010.12.017.
Publisher:
Elsevier BV
Journal:
Medical Engineering & Physics
KAUST Grant Number:
KUK-C1-013-04
Issue Date:
Jun-2011
DOI:
10.1016/j.medengphy.2010.12.017
PubMed ID:
21242096
Type:
Article
ISSN:
1350-4533
Sponsors:
This work was supported by the New Zealand Foundation for Research, Science and Technology, through grants NERF 139400 and NERF 9077/3608892. This publication is also based on work supported in part by Award No. KUK-C1-013-04, made by King Abdullah University of Science and Technology (KAUST).
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorFlynn, Cormacen
dc.contributor.authorTaberner, Andrewen
dc.contributor.authorNielsen, Poulen
dc.date.accessioned2016-02-25T13:41:06Zen
dc.date.available2016-02-25T13:41:06Zen
dc.date.issued2011-06en
dc.identifier.citationFlynn C, Taberner A, Nielsen P (2011) Measurement of the force–displacement response of in vivo human skin under a rich set of deformations. Medical Engineering & Physics 33: 610–619. Available: http://dx.doi.org/10.1016/j.medengphy.2010.12.017.en
dc.identifier.issn1350-4533en
dc.identifier.pmid21242096en
dc.identifier.doi10.1016/j.medengphy.2010.12.017en
dc.identifier.urihttp://hdl.handle.net/10754/598781en
dc.description.abstractThe non-linear, anisotropic, and viscoelastic properties of human skin vary according to location on the body, age, and individual. The measurement of skin's mechanical properties is important in several fields including medicine, cosmetics, and forensics. In this study, a novel force-sensitive micro-robot applied a rich set of three-dimensional deformations to the skin surface of different areas of the arms of 20 volunteers. The force-displacement response of each area in different directions was measured. All tested areas exhibited a non-linear, viscoelastic, and anisotropic force-displacement response. There was a wide quantitative variation in the stiffness of the response. For the right anterior forearm, the ratio of the maximum probe reaction force to maximum probe displacement ranged from 0.44Nmm-1 to 1.45Nmm-1. All volunteers exhibited similar qualitative anisotropic characteristics. For the anterior right forearm, the stiffest force-displacement response was when the probe displaced along the longitudinal axis of the forearm. The response of the anterior left forearm was stiffest in a direction 20° to the longitudinal axis of the forearm. The posterior upper arm was stiffest in a direction 90° to the longitudinal axis of the arm. The averaged posterior upper arm response was less stiff than the averaged anterior forearm response. The maximum probe force at 1.3mm probe displacement was 0.69N for the posterior upper arm and 1.1N for the right anterior forearm. The average energy loss during the loading-unloading cycle ranged from 11.9% to 34.2%. This data will be very useful for studying the non-linear, anisotropic, and viscoelastic behaviour of skin and also for generating material parameters for appropriate constitutive models. © 2011 IPEM.en
dc.description.sponsorshipThis work was supported by the New Zealand Foundation for Research, Science and Technology, through grants NERF 139400 and NERF 9077/3608892. This publication is also based on work supported in part by Award No. KUK-C1-013-04, made by King Abdullah University of Science and Technology (KAUST).en
dc.publisherElsevier BVen
dc.subjectAnisotropyen
dc.subjectIn vivo deformationen
dc.subjectRelaxed skin tension linesen
dc.subjectSkinen
dc.subjectViscoelasticityen
dc.titleMeasurement of the force–displacement response of in vivo human skin under a rich set of deformationsen
dc.typeArticleen
dc.identifier.journalMedical Engineering & Physicsen
dc.contributor.institutionUniversity of Auckland, Auckland, New Zealanden
kaust.grant.numberKUK-C1-013-04en

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