Surface strain measurements of fingertip skin under shearing
Identifieur interne : 003F94 ( Ncbi/Merge ); précédent : 003F93; suivant : 003F95Surface strain measurements of fingertip skin under shearing
Auteurs : Benoit Delhaye [Belgique, États-Unis] ; Allan Barrea [Belgique] ; Benoni B. Edin [Suède] ; Philippe Lefèvre [Belgique] ; Jean-Louis Thonnard [Belgique]Source :
- Journal of the Royal Society Interface [ 1742-5689 ] ; 2016.
Abstract
The temporal evolution of surface strain, resulting from a combination of normal and tangential loading forces on the fingerpad, was calculated from high-resolution images. A customized robotic device loaded the fingertip with varying normal force, tangential direction and tangential speed. We observed strain waves that propagated from the periphery to the centre of the contact area. Consequently, different regions of the contact area were subject to varying degrees of compression, stretch and shear. The spatial distribution of both the strains and the strain energy densities depended on the stimulus direction. Additionally, the strains varied with the normal force level and were substantial, e.g. peak strains of 50% with a normal force of 5 N, i.e. at force levels well within the range of common dexterous manipulation tasks. While these observations were consistent with some theoretical predictions from contact mechanics, we also observed substantial deviations as expected given the complex geometry and mechanics of fingertips. Specifically, from in-depth analyses, we conclude that some of these deviations depend on local fingerprint patterns. Our data provide useful information for models of tactile afferent responses and background for the design of novel haptic interfaces.
Url:
DOI: 10.1098/rsif.2015.0874
PubMed: 26888949
PubMed Central: 4780562
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<front><div type="abstract" xml:lang="en"><p>The temporal evolution of surface strain, resulting from a combination of normal and tangential loading forces on the fingerpad, was calculated from high-resolution images. A customized robotic device loaded the fingertip with varying normal force, tangential direction and tangential speed. We observed strain waves that propagated from the periphery to the centre of the contact area. Consequently, different regions of the contact area were subject to varying degrees of compression, stretch and shear. The spatial distribution of both the strains and the strain energy densities depended on the stimulus direction. Additionally, the strains varied with the normal force level and were substantial, e.g. peak strains of 50% with a normal force of 5 N, i.e. at force levels well within the range of common dexterous manipulation tasks. While these observations were consistent with some theoretical predictions from contact mechanics, we also observed substantial deviations as expected given the complex geometry and mechanics of fingertips. Specifically, from in-depth analyses, we conclude that some of these deviations depend on local fingerprint patterns. Our data provide useful information for models of tactile afferent responses and background for the design of novel haptic interfaces.</p>
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,<addr-line>Umeå</addr-line>
,<country>Sweden</country>
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<country xml:lang="fr">Suède</country>
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<author><name sortKey="Delhaye, Benoit" sort="Delhaye, Benoit" uniqKey="Delhaye B" first="Benoit" last="Delhaye">Benoit Delhaye</name>
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,<institution>Université catholique de Louvain</institution>
,<addr-line>Brussels and Louvain-la-Neuve</addr-line>
,<country>Belgium</country>
</nlm:aff>
<country xml:lang="fr">Belgique</country>
<wicri:regionArea># see nlm:aff country strict</wicri:regionArea>
</affiliation>
<affiliation wicri:level="1"><nlm:aff id="af2"><addr-line>Institute of Information and Communication Technologies, Electronics and Applied Mathematics (ICTEAM)</addr-line>
,<institution>Université catholique de Louvain</institution>
,<addr-line>Brussels and Louvain-la-Neuve</addr-line>
,<country>Belgium</country>
</nlm:aff>
<country xml:lang="fr">Belgique</country>
<wicri:regionArea># see nlm:aff country strict</wicri:regionArea>
</affiliation>
<affiliation wicri:level="1"><nlm:aff id="af4"><addr-line>Department of Organismal Biology and Anatomy</addr-line>
,<institution>University of Chicago</institution>
,<addr-line>Chicago, IL</addr-line>
,<country>USA</country>
</nlm:aff>
<country xml:lang="fr">États-Unis</country>
<wicri:regionArea># see nlm:aff country strict</wicri:regionArea>
</affiliation>
</author>
<author><name sortKey="Barrea, Allan" sort="Barrea, Allan" uniqKey="Barrea A" first="Allan" last="Barrea">Allan Barrea</name>
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,<institution>Université catholique de Louvain</institution>
,<addr-line>Brussels and Louvain-la-Neuve</addr-line>
,<country>Belgium</country>
</nlm:aff>
<country xml:lang="fr">Belgique</country>
<wicri:regionArea># see nlm:aff country strict</wicri:regionArea>
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,<country>Belgium</country>
</nlm:aff>
<country xml:lang="fr">Belgique</country>
<wicri:regionArea># see nlm:aff country strict</wicri:regionArea>
</affiliation>
</author>
<author><name sortKey="Edin, Benoni B" sort="Edin, Benoni B" uniqKey="Edin B" first="Benoni B." last="Edin">Benoni B. Edin</name>
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,<institution>Umeå University</institution>
,<addr-line>Umeå</addr-line>
,<country>Sweden</country>
</nlm:aff>
<country xml:lang="fr">Suède</country>
<wicri:regionArea># see nlm:aff country strict</wicri:regionArea>
</affiliation>
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<author><name sortKey="Lefevre, Philippe" sort="Lefevre, Philippe" uniqKey="Lefevre P" first="Philippe" last="Lefèvre">Philippe Lefèvre</name>
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,<institution>Université catholique de Louvain</institution>
,<addr-line>Brussels and Louvain-la-Neuve</addr-line>
,<country>Belgium</country>
</nlm:aff>
<country xml:lang="fr">Belgique</country>
<wicri:regionArea># see nlm:aff country strict</wicri:regionArea>
</affiliation>
<affiliation wicri:level="1"><nlm:aff id="af2"><addr-line>Institute of Information and Communication Technologies, Electronics and Applied Mathematics (ICTEAM)</addr-line>
,<institution>Université catholique de Louvain</institution>
,<addr-line>Brussels and Louvain-la-Neuve</addr-line>
,<country>Belgium</country>
</nlm:aff>
<country xml:lang="fr">Belgique</country>
<wicri:regionArea># see nlm:aff country strict</wicri:regionArea>
</affiliation>
</author>
<author><name sortKey="Thonnard, Jean Louis" sort="Thonnard, Jean Louis" uniqKey="Thonnard J" first="Jean-Louis" last="Thonnard">Jean-Louis Thonnard</name>
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,<institution>Université catholique de Louvain</institution>
,<addr-line>Brussels and Louvain-la-Neuve</addr-line>
,<country>Belgium</country>
</nlm:aff>
<country xml:lang="fr">Belgique</country>
<wicri:regionArea># see nlm:aff country strict</wicri:regionArea>
</affiliation>
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,<addr-line>Brussels and Louvain-la-Neuve</addr-line>
,<country>Belgium</country>
</nlm:aff>
<country xml:lang="fr">Belgique</country>
<wicri:regionArea># see nlm:aff country strict</wicri:regionArea>
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</analytic>
<series><title level="j">Journal of the Royal Society Interface</title>
<idno type="ISSN">1742-5689</idno>
<idno type="eISSN">1742-5662</idno>
<imprint><date when="2016">2016</date>
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<front><div type="abstract" xml:lang="en"><p>The temporal evolution of surface strain, resulting from a combination of normal and tangential loading forces on the fingerpad, was calculated from high-resolution images. A customized robotic device loaded the fingertip with varying normal force, tangential direction and tangential speed. We observed strain waves that propagated from the periphery to the centre of the contact area. Consequently, different regions of the contact area were subject to varying degrees of compression, stretch and shear. The spatial distribution of both the strains and the strain energy densities depended on the stimulus direction. Additionally, the strains varied with the normal force level and were substantial, e.g. peak strains of 50% with a normal force of 5 N, i.e. at force levels well within the range of common dexterous manipulation tasks. While these observations were consistent with some theoretical predictions from contact mechanics, we also observed substantial deviations as expected given the complex geometry and mechanics of fingertips. Specifically, from in-depth analyses, we conclude that some of these deviations depend on local fingerprint patterns. Our data provide useful information for models of tactile afferent responses and background for the design of novel haptic interfaces.</p>
</div>
</front>
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<pubmed><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Surface strain measurements of fingertip skin under shearing.</title>
<author><name sortKey="Delhaye, Benoit" sort="Delhaye, Benoit" uniqKey="Delhaye B" first="Benoit" last="Delhaye">Benoit Delhaye</name>
<affiliation wicri:level="4"><nlm:affiliation>Institute of Neuroscience (IoNS), Université catholique de Louvain, Brussels and Louvain-la-Neuve, Belgium Institute of Information and Communication Technologies, Electronics and Applied Mathematics (ICTEAM), Université catholique de Louvain, Brussels and Louvain-la-Neuve, Belgium Department of Organismal Biology and Anatomy, University of Chicago, Chicago, IL, USA.</nlm:affiliation>
<country xml:lang="fr">États-Unis</country>
<wicri:regionArea>Institute of Neuroscience (IoNS), Université catholique de Louvain, Brussels and Louvain-la-Neuve, Belgium Institute of Information and Communication Technologies, Electronics and Applied Mathematics (ICTEAM), Université catholique de Louvain, Brussels and Louvain-la-Neuve, Belgium Department of Organismal Biology and Anatomy, University of Chicago, Chicago, IL</wicri:regionArea>
<placeName><region type="state">Illinois</region>
</placeName>
<orgName type="university">Université catholique de Louvain</orgName>
</affiliation>
</author>
<author><name sortKey="Barrea, Allan" sort="Barrea, Allan" uniqKey="Barrea A" first="Allan" last="Barrea">Allan Barrea</name>
<affiliation wicri:level="4"><nlm:affiliation>Institute of Neuroscience (IoNS), Université catholique de Louvain, Brussels and Louvain-la-Neuve, Belgium Institute of Information and Communication Technologies, Electronics and Applied Mathematics (ICTEAM), Université catholique de Louvain, Brussels and Louvain-la-Neuve, Belgium.</nlm:affiliation>
<country xml:lang="fr">Belgique</country>
<wicri:regionArea>Institute of Neuroscience (IoNS), Université catholique de Louvain, Brussels and Louvain-la-Neuve, Belgium Institute of Information and Communication Technologies, Electronics and Applied Mathematics (ICTEAM), Université catholique de Louvain, Brussels and Louvain-la-Neuve</wicri:regionArea>
<orgName type="university">Université catholique de Louvain</orgName>
<placeName><settlement type="city">Louvain-la-Neuve</settlement>
<region type="region" nuts="1">Région wallonne</region>
<region type="province" nuts="1">Province du Brabant wallon</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Edin, Benoni B" sort="Edin, Benoni B" uniqKey="Edin B" first="Benoni B" last="Edin">Benoni B. Edin</name>
<affiliation wicri:level="1"><nlm:affiliation>Physiology Section, Department of Integrative Medical Biology, Umeå University, Umeå, Sweden.</nlm:affiliation>
<country xml:lang="fr">Suède</country>
<wicri:regionArea>Physiology Section, Department of Integrative Medical Biology, Umeå University, Umeå</wicri:regionArea>
<wicri:noRegion>Umeå</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Lefevre, Philippe" sort="Lefevre, Philippe" uniqKey="Lefevre P" first="Philippe" last="Lefèvre">Philippe Lefèvre</name>
<affiliation wicri:level="4"><nlm:affiliation>Institute of Neuroscience (IoNS), Université catholique de Louvain, Brussels and Louvain-la-Neuve, Belgium Institute of Information and Communication Technologies, Electronics and Applied Mathematics (ICTEAM), Université catholique de Louvain, Brussels and Louvain-la-Neuve, Belgium.</nlm:affiliation>
<country xml:lang="fr">Belgique</country>
<wicri:regionArea>Institute of Neuroscience (IoNS), Université catholique de Louvain, Brussels and Louvain-la-Neuve, Belgium Institute of Information and Communication Technologies, Electronics and Applied Mathematics (ICTEAM), Université catholique de Louvain, Brussels and Louvain-la-Neuve</wicri:regionArea>
<orgName type="university">Université catholique de Louvain</orgName>
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</author>
<author><name sortKey="Thonnard, Jean Louis" sort="Thonnard, Jean Louis" uniqKey="Thonnard J" first="Jean-Louis" last="Thonnard">Jean-Louis Thonnard</name>
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<wicri:regionArea>Institute of Neuroscience (IoNS), Université catholique de Louvain, Brussels and Louvain-la-Neuve, Belgium Cliniques Universitaires Saint-Luc, Physical and Rehabilitation Medicine Department, Université catholique de Louvain, Brussels and Louvain-la-Neuve</wicri:regionArea>
<orgName type="university">Université catholique de Louvain</orgName>
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<sourceDesc><biblStruct><analytic><title xml:lang="en">Surface strain measurements of fingertip skin under shearing.</title>
<author><name sortKey="Delhaye, Benoit" sort="Delhaye, Benoit" uniqKey="Delhaye B" first="Benoit" last="Delhaye">Benoit Delhaye</name>
<affiliation wicri:level="4"><nlm:affiliation>Institute of Neuroscience (IoNS), Université catholique de Louvain, Brussels and Louvain-la-Neuve, Belgium Institute of Information and Communication Technologies, Electronics and Applied Mathematics (ICTEAM), Université catholique de Louvain, Brussels and Louvain-la-Neuve, Belgium Department of Organismal Biology and Anatomy, University of Chicago, Chicago, IL, USA.</nlm:affiliation>
<country xml:lang="fr">États-Unis</country>
<wicri:regionArea>Institute of Neuroscience (IoNS), Université catholique de Louvain, Brussels and Louvain-la-Neuve, Belgium Institute of Information and Communication Technologies, Electronics and Applied Mathematics (ICTEAM), Université catholique de Louvain, Brussels and Louvain-la-Neuve, Belgium Department of Organismal Biology and Anatomy, University of Chicago, Chicago, IL</wicri:regionArea>
<placeName><region type="state">Illinois</region>
</placeName>
<orgName type="university">Université catholique de Louvain</orgName>
</affiliation>
</author>
<author><name sortKey="Barrea, Allan" sort="Barrea, Allan" uniqKey="Barrea A" first="Allan" last="Barrea">Allan Barrea</name>
<affiliation wicri:level="4"><nlm:affiliation>Institute of Neuroscience (IoNS), Université catholique de Louvain, Brussels and Louvain-la-Neuve, Belgium Institute of Information and Communication Technologies, Electronics and Applied Mathematics (ICTEAM), Université catholique de Louvain, Brussels and Louvain-la-Neuve, Belgium.</nlm:affiliation>
<country xml:lang="fr">Belgique</country>
<wicri:regionArea>Institute of Neuroscience (IoNS), Université catholique de Louvain, Brussels and Louvain-la-Neuve, Belgium Institute of Information and Communication Technologies, Electronics and Applied Mathematics (ICTEAM), Université catholique de Louvain, Brussels and Louvain-la-Neuve</wicri:regionArea>
<orgName type="university">Université catholique de Louvain</orgName>
<placeName><settlement type="city">Louvain-la-Neuve</settlement>
<region type="region" nuts="1">Région wallonne</region>
<region type="province" nuts="1">Province du Brabant wallon</region>
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</affiliation>
</author>
<author><name sortKey="Edin, Benoni B" sort="Edin, Benoni B" uniqKey="Edin B" first="Benoni B" last="Edin">Benoni B. Edin</name>
<affiliation wicri:level="1"><nlm:affiliation>Physiology Section, Department of Integrative Medical Biology, Umeå University, Umeå, Sweden.</nlm:affiliation>
<country xml:lang="fr">Suède</country>
<wicri:regionArea>Physiology Section, Department of Integrative Medical Biology, Umeå University, Umeå</wicri:regionArea>
<wicri:noRegion>Umeå</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Lefevre, Philippe" sort="Lefevre, Philippe" uniqKey="Lefevre P" first="Philippe" last="Lefèvre">Philippe Lefèvre</name>
<affiliation wicri:level="4"><nlm:affiliation>Institute of Neuroscience (IoNS), Université catholique de Louvain, Brussels and Louvain-la-Neuve, Belgium Institute of Information and Communication Technologies, Electronics and Applied Mathematics (ICTEAM), Université catholique de Louvain, Brussels and Louvain-la-Neuve, Belgium.</nlm:affiliation>
<country xml:lang="fr">Belgique</country>
<wicri:regionArea>Institute of Neuroscience (IoNS), Université catholique de Louvain, Brussels and Louvain-la-Neuve, Belgium Institute of Information and Communication Technologies, Electronics and Applied Mathematics (ICTEAM), Université catholique de Louvain, Brussels and Louvain-la-Neuve</wicri:regionArea>
<orgName type="university">Université catholique de Louvain</orgName>
<placeName><settlement type="city">Louvain-la-Neuve</settlement>
<region type="region" nuts="1">Région wallonne</region>
<region type="province" nuts="1">Province du Brabant wallon</region>
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</affiliation>
</author>
<author><name sortKey="Thonnard, Jean Louis" sort="Thonnard, Jean Louis" uniqKey="Thonnard J" first="Jean-Louis" last="Thonnard">Jean-Louis Thonnard</name>
<affiliation wicri:level="4"><nlm:affiliation>Institute of Neuroscience (IoNS), Université catholique de Louvain, Brussels and Louvain-la-Neuve, Belgium Cliniques Universitaires Saint-Luc, Physical and Rehabilitation Medicine Department, Université catholique de Louvain, Brussels and Louvain-la-Neuve, Belgium jean-louis.thonnard@uclouvain.be.</nlm:affiliation>
<country wicri:rule="url">Belgique</country>
<wicri:regionArea>Institute of Neuroscience (IoNS), Université catholique de Louvain, Brussels and Louvain-la-Neuve, Belgium Cliniques Universitaires Saint-Luc, Physical and Rehabilitation Medicine Department, Université catholique de Louvain, Brussels and Louvain-la-Neuve</wicri:regionArea>
<orgName type="university">Université catholique de Louvain</orgName>
<placeName><settlement type="city">Louvain-la-Neuve</settlement>
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<region type="province" nuts="1">Province du Brabant wallon</region>
</placeName>
</affiliation>
</author>
</analytic>
<series><title level="j">Journal of the Royal Society, Interface / the Royal Society</title>
<idno type="eISSN">1742-5662</idno>
<imprint><date when="2016" type="published">2016</date>
</imprint>
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<front><div type="abstract" xml:lang="en">The temporal evolution of surface strain, resulting from a combination of normal and tangential loading forces on the fingerpad, was calculated from high-resolution images. A customized robotic device loaded the fingertip with varying normal force, tangential direction and tangential speed. We observed strain waves that propagated from the periphery to the centre of the contact area. Consequently, different regions of the contact area were subject to varying degrees of compression, stretch and shear. The spatial distribution of both the strains and the strain energy densities depended on the stimulus direction. Additionally, the strains varied with the normal force level and were substantial, e.g. peak strains of 50% with a normal force of 5 N, i.e. at force levels well within the range of common dexterous manipulation tasks. While these observations were consistent with some theoretical predictions from contact mechanics, we also observed substantial deviations as expected given the complex geometry and mechanics of fingertips. Specifically, from in-depth analyses, we conclude that some of these deviations depend on local fingerprint patterns. Our data provide useful information for models of tactile afferent responses and background for the design of novel haptic interfaces.</div>
</front>
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