Grip performance affected by water-induced wrinkling of fingers

Hsin Ta Lin, Ting Fu Hong, Wang Long Li

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Abstract Gripping an object is one of the most common actions in our daily lives. The hairless human fingers and toes become wrinkled after interacting with water for a period of time. This wrinkling phenomenon affects finger grip performance and influences the safety and convenience of everyday life. In order to study the impact of wrinkled fingers on grip performance, the moisture of the finger was measured using a Corneometer® CM825; the real-time fingertip contact area on the moving surfaces was captured via the ink method and a high-speed camera; and the coefficient of friction between the fingertip and the contact surfaces in the dry, wet and water-submerged states was evaluated using a tribometer (UMT-2). In particular, a simple compressed spring grip experiment was designed to quantify and verify the relationship between the gripping force and the friction force of an unwrinkled/wrinkled fingertip and contact PET surfaces. The experimental results revealed that how finger wrinkles affect grip action.

Original languageEnglish
Article number515
Pages (from-to)1-9
Number of pages9
JournalTribology Letters
Volume58
Issue number3
DOIs
Publication statusPublished - 2015 Jun 1

Fingerprint

wrinkling
Water
Friction
water
High speed cameras
Ink
Moisture
tribometers
high speed cameras
inks
moisture
coefficient of friction
safety
friction
Experiments

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

Cite this

Lin, Hsin Ta ; Hong, Ting Fu ; Li, Wang Long. / Grip performance affected by water-induced wrinkling of fingers. In: Tribology Letters. 2015 ; Vol. 58, No. 3. pp. 1-9.
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Grip performance affected by water-induced wrinkling of fingers. / Lin, Hsin Ta; Hong, Ting Fu; Li, Wang Long.

In: Tribology Letters, Vol. 58, No. 3, 515, 01.06.2015, p. 1-9.

Research output: Contribution to journalArticle

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AB - Abstract Gripping an object is one of the most common actions in our daily lives. The hairless human fingers and toes become wrinkled after interacting with water for a period of time. This wrinkling phenomenon affects finger grip performance and influences the safety and convenience of everyday life. In order to study the impact of wrinkled fingers on grip performance, the moisture of the finger was measured using a Corneometer® CM825; the real-time fingertip contact area on the moving surfaces was captured via the ink method and a high-speed camera; and the coefficient of friction between the fingertip and the contact surfaces in the dry, wet and water-submerged states was evaluated using a tribometer (UMT-2). In particular, a simple compressed spring grip experiment was designed to quantify and verify the relationship between the gripping force and the friction force of an unwrinkled/wrinkled fingertip and contact PET surfaces. The experimental results revealed that how finger wrinkles affect grip action.

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