|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Pan American Materials Congress: Advanced Biomaterials
||On the Strain Rate Sensitivity of Keratin Hair Fibers
||Yang Yu, Wen Yang, Marc A Meyers
|On-Site Speaker (Planned)
Keratinous fibrous materials, such as wool and hair, have been observed to exhibit viscoelasticity. Our previous study on human hair shows that the yield stress is dependent on the strain rate. In order to better understand the strain rate sensitivity and the contributing component, both human and horse hair were studied before and after the matrix was disrupted. Human and horse hair were first treated with an established method to disrupt the disulfide bonds within the keratin matrix. Preliminary results show that human hair shows a much decrease in strain rate sensitivity (from 0.11 to 0.05), while horse hair doesn't exhibit much difference due to the treatment. After treatment, both fibers show a similar sensitivity (0.05 and 0.06 for human and horse hair, respectively). Therefore, it is shown that the matrix ratio affects the strain rate sensitivity of the keratin fibers.
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