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Indexed by:期刊论文

Date of Publication:2012-11-04

Journal:Key Engineering Materials

Included Journals:EI、CPCI-S、SCIE、Scopus

Volume:562-565

Page Number:914-919

ISSN No.:9783037857397

Key Words:Micro-tensile Testing; Material Property; Feather Barbs; Asio Otus

Abstract:Avian feather is the outstanding protein fiber structure that still lacks an interpretation generally acceptable in any detail. In this paper, asio otus feathers were morphological represented and their barbs were mechanical characterized by a developed micro-tensile tester with a load resolution of 0.25 mN and a displacement resolution of 10 nm. With a tensile loading speed at 0.02 mu m/s, Young's modulus of the flight feather barbs with length of 1450-1900 mu m was calculated to be 3.13-3.66 GPa, higher than 1.47-2.04 GPa for the down feather barbs with length of 520-710 mu m. It is concluded that the asio otus's flight feathers on its wing and tail are more rigid than the down feathers on its body.