Dynamic Tensile Properties of Human Skin

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Title: Dynamic Tensile Properties of Human Skin
Authors: Gallagher, A. J.
Ní Annaidh, Aisling
Bruyère, Karine
et al.
Permanent link: http://hdl.handle.net/10197/4772
Date: 2012
Abstract: The mechanical properties of skin are important for a number of applications including surgery, dermatology, impact biomechanics and forensic science. Studies have shown that the anisotropic effects of skin have been linked to sample orientation with respect to contour lines of tension, i.e. the Langer’s lines. There have been numerous studies undertaken to calculate the influence of Langer’s lines on the mechanical properties of human skin at quasistatic strain rates; however, it is relatively unknown what occurs at dynamic speeds. This study conducts a number of dynamic mechanical tensile tests to investigate the influence dynamic speeds have on the mechanical properties of human skin. The testing protocol involves uniaxial tensile tests at three different dynamic speeds, 1m/s, 1.5m/s and 2m/s, performed using an Instron tensile test machine. A total of 33 tests were conducted on 3 human cadavers aged 85, 77 and 82. Samples were excised at specific locations and orientations with respect to the Langer’s lines. The purpose for this was to recognise the significance that location and orientation have on the mechanical properties of human skin. The mean ultimate tensile strength (UTS) was 27.2±9.3MPa, the mean strain energy was 4.9±1.5MJ/m3, the mean elastic modulus was 98.97±97MPa and the mean failure strain was 25.45±5.07%. This new material data for human skin can be applied to constitutive models in areas such as impact biomechanics, forensic science and computer‐assisted surgery.
Type of material: Conference Publication
Publisher: International Research Council on the Biomechanics of Injury
Copyright (published version): 2012 International Research Council on the Biomechanics of Injury
Keywords: Soft tissueLanger's linesDynamic speedsTensile properties
Language: en
Status of Item: Peer reviewed
Is part of: 2012 IRCOBI Conference Proceedings
Conference Details: IRCOBI Conference 2012, 12 - 14 September 2012, Dublin (Ireland)
Appears in Collections:Mechanical & Materials Engineering Research Collection

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