TY - GEN
T1 - Self-shifting neutral axis and negative poisson’s ratio in hierarchical structured natural composites
T2 - Annual Conference and Exposition on Experimental and Applied Mechanics, 2016
AU - Xu, Shaowen
AU - Mitra, Aniruddha
AU - Migues, Stephen
AU - Mayfield, Jacob
AU - Shinall, Michael
AU - Derek, Bessenbacher
AU - Linley, Davis
AU - Russell, Spratlin
N1 - Publisher Copyright:
© The Society for Experimental Mechanics, Inc. 2017.
PY - 2017
Y1 - 2017
N2 - Bamboo is a light weight, high strength natural composite. Although it has been wildly used in the world for thousand years, the mechanism of material enhancement and microstructure/property relationships has not been well understood yet. In this study, triple points bending tests were conducted for mechanical behavior characterization of natural composite-bamboo. Digital Image Correlation was utilized to determine the deformation and strain of a bamboo beam. It was found that (a) the material responses to the applied load had both a linear and a non-linear range, (b) the beam was stiffer when it had node at two ends, (c) the neutral axis shifted toward the tensile side of the beam during loading process, (d) when samples were reloaded, the material responses to the load were different, (e) negative Poisson’s ration was found in the high fiber density of the beam.
AB - Bamboo is a light weight, high strength natural composite. Although it has been wildly used in the world for thousand years, the mechanism of material enhancement and microstructure/property relationships has not been well understood yet. In this study, triple points bending tests were conducted for mechanical behavior characterization of natural composite-bamboo. Digital Image Correlation was utilized to determine the deformation and strain of a bamboo beam. It was found that (a) the material responses to the applied load had both a linear and a non-linear range, (b) the beam was stiffer when it had node at two ends, (c) the neutral axis shifted toward the tensile side of the beam during loading process, (d) when samples were reloaded, the material responses to the load were different, (e) negative Poisson’s ration was found in the high fiber density of the beam.
KW - Digital image correlation
KW - Hierarchical structure
KW - Negative poisson’s ratio
KW - Neutral axis
KW - Self-shifting
UR - http://www.scopus.com/inward/record.url?scp=84990050318&partnerID=8YFLogxK
U2 - 10.1007/978-3-319-41351-8_10
DO - 10.1007/978-3-319-41351-8_10
M3 - Conference article
AN - SCOPUS:84990050318
SN - 9783319413501
T3 - Conference Proceedings of the Society for Experimental Mechanics Series
SP - 67
EP - 73
BT - Mechanics of Biological Systems and Materials - Proceedings of the 2016 Annual Conference on Experimental and Applied Mechanics
A2 - Korach, Chad S.
A2 - Tekalur, Srinivasan Arjun
A2 - Zavattieri, Pablo
PB - Springer New York LLC
Y2 - 6 June 2016 through 9 June 2016
ER -