|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Biological Materials Science
||On the Stress Relaxation and Tear Resistance of Skin
||Wen Yang, Andrei Pissarenko, Vincent Sherman, Eric Schaible , Katherine Brown, William Proud, Alun Wiliams, Robert Ritchie, Marc Meyers
|On-Site Speaker (Planned)
Skin is the organ protecting human from environment. After interacting with the external force, young adult's skin can easily take the repeated small load without a vital damage. Tear resistance is of importance in the various functions of skin, especially protection from predatorial attack. Here, we mechanistically quantify the stress relaxation and the extreme tear resistance of skin and identify the underlying structural features, which lead to its sophisticated recovery and failure mechanisms. We explain how the skin recovers at the small load and why it is virtually impossible to propagate a tear in skin. We express the deformation in terms of four mechanisms of collagen fibril activity in skin under tensile loading that virtually eliminate the possibility of tearing in pre-notched samples: fibril straightening, fibril reorientation towards the tensile direction, elastic stretching and interfibrillar sliding, all of which contribute to the redistribution of the stresses at the notch tip.
||Planned: Supplemental Proceedings volume