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Measuring Contact Area in a Sliding Human Finger-Pad Contact

Liu, X and Carre, MJ and Zhang, Q and Lu, Z and Matcher, SJ and Lewis, R (2017) Measuring Contact Area in a Sliding Human Finger-Pad Contact. Skin Research and Technology. ISSN 1600-0846

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Friction of the Human Finger-pad_Measuring Contact Area _revised 4_XL.pdf - Accepted Version
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Abstract

Background/Purpose
The work outlined in this paper was aimed at achieving further understanding of skin frictional behaviour by investigating the contact area between human finger-pads and flat surfaces.
Methods
Both the static and the dynamic contact areas (in macro- and micro-scales) were measured using various techniques, including ink printing, optical coherence tomography (OCT) and Digital Image Correlation (DIC).
Results
In the studies of the static measurements using ink printing, the experimental results showed that the apparent and the real contact area increased with load following a piecewise linear correlation function for a finger-pad in contact with paper sheets. Comparisons indicated that the OCT method is a reliable and effective method to investigate the real contact area of a finger-pad and allow micro-scale analysis. The apparent contact area (from the DIC measurements) was found to reduce with time in the transition from the static phase to the dynamic phase while the real area of contact (from OCT) increased.
Conclusions
The results from this study enable the interaction between finger-pads and contact object surface to be better analysed, and hence improve the understanding of skin friction.

Item Type: Article
Additional Information: This is the accepted version of the following article: Liu X, Carré MJ, Zhang Q, Lu Z, Matcher SJ, Lewis R. Measuring contact area in a sliding human finger-pad contact. Skin Res Technol. 2017;00:1–14. https://doi.org/10.1111/srt.12387, which has been published in final form at http://dx.doi.org/10.1111/srt.12387
Uncontrolled Keywords: 1103 Clinical Sciences
Subjects: T Technology > TK Electrical engineering. Electronics. Nuclear engineering
T Technology > TP Chemical technology
Divisions: Electronics and Electrical Engineering
General Engineering Research Institute
Publisher: Wiley
Date Deposited: 05 Jun 2017 09:04
Last Modified: 13 Sep 2017 01:58
DOI or Identification number: 10.1111/srt.12387
URI: http://researchonline.ljmu.ac.uk/id/eprint/6611

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