Characterizing and imaging gross and real finger contacts under dynamic loading

Séréna Bochereau; Brygida Dzidek; Michael Adams; Vincent Hayward Hayward

doi:10.1109/TOH.2017.2686849

Characterizing and imaging gross and real finger contacts under dynamic loading

Séréna Bochereau, Brygida Dzidek, Michael Adams, Vincent Hayward Hayward

Chemical Engineering

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

392 Downloads (Pure)

Abstract

We describe an instrument intended to study finger contacts
under tangential dynamic loading. This type of loading is relevant to the
natural conditions when touch is used to discriminate and identify the
properties of the surfaces of objects — it is also crucial during object
manipulation. The system comprises a high performance tribometer
able to accurately record in vivo the components of the interfacial
forces when a finger interacts with arbitrary surfaces which is combined
with a high-speed, high-definition imaging apparatus. Broadband skin
excitation reproducing the dynamic contact loads previously identified
can be effected while imaging the contact through a transparent window,
thus closely approximating the condition when the skin interacts with a
non-transparent surface during sliding. As a preliminary example of the
type of phenomenon that can be identified with this apparatus, we show
that traction in the range from 10 to 1000 Hz tends to decrease faster
with excitation frequency for dry fingers than for moist fingers.

Original language	English
Journal	IEEE Transactions on Haptics
Early online date	4 Jul 2017
DOIs	https://doi.org/10.1109/TOH.2017.2686849
Publication status	E-pub ahead of print - 4 Jul 2017

Keywords

fingerprint imaging
bio-tribology
dynamic loading
tactile

ASJC Scopus subject areas

General Engineering

Access to Document

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Cite this

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title = "Characterizing and imaging gross and real finger contacts under dynamic loading",

abstract = "We describe an instrument intended to study finger contactsunder tangential dynamic loading. This type of loading is relevant to thenatural conditions when touch is used to discriminate and identify theproperties of the surfaces of objects — it is also crucial during objectmanipulation. The system comprises a high performance tribometerable to accurately record in vivo the components of the interfacialforces when a finger interacts with arbitrary surfaces which is combinedwith a high-speed, high-definition imaging apparatus. Broadband skinexcitation reproducing the dynamic contact loads previously identifiedcan be effected while imaging the contact through a transparent window,thus closely approximating the condition when the skin interacts with anon-transparent surface during sliding. As a preliminary example of thetype of phenomenon that can be identified with this apparatus, we showthat traction in the range from 10 to 1000 Hz tends to decrease fasterwith excitation frequency for dry fingers than for moist fingers.",

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AU - Hayward, Vincent Hayward

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N2 - We describe an instrument intended to study finger contactsunder tangential dynamic loading. This type of loading is relevant to thenatural conditions when touch is used to discriminate and identify theproperties of the surfaces of objects — it is also crucial during objectmanipulation. The system comprises a high performance tribometerable to accurately record in vivo the components of the interfacialforces when a finger interacts with arbitrary surfaces which is combinedwith a high-speed, high-definition imaging apparatus. Broadband skinexcitation reproducing the dynamic contact loads previously identifiedcan be effected while imaging the contact through a transparent window,thus closely approximating the condition when the skin interacts with anon-transparent surface during sliding. As a preliminary example of thetype of phenomenon that can be identified with this apparatus, we showthat traction in the range from 10 to 1000 Hz tends to decrease fasterwith excitation frequency for dry fingers than for moist fingers.

AB - We describe an instrument intended to study finger contactsunder tangential dynamic loading. This type of loading is relevant to thenatural conditions when touch is used to discriminate and identify theproperties of the surfaces of objects — it is also crucial during objectmanipulation. The system comprises a high performance tribometerable to accurately record in vivo the components of the interfacialforces when a finger interacts with arbitrary surfaces which is combinedwith a high-speed, high-definition imaging apparatus. Broadband skinexcitation reproducing the dynamic contact loads previously identifiedcan be effected while imaging the contact through a transparent window,thus closely approximating the condition when the skin interacts with anon-transparent surface during sliding. As a preliminary example of thetype of phenomenon that can be identified with this apparatus, we showthat traction in the range from 10 to 1000 Hz tends to decrease fasterwith excitation frequency for dry fingers than for moist fingers.

KW - fingerprint imaging

KW - bio-tribology

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KW - tactile

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JO - IEEE Transactions on Haptics

JF - IEEE Transactions on Haptics

ER -

Characterizing and imaging gross and real finger contacts under dynamic loading

Abstract

Keywords

ASJC Scopus subject areas

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