Indentability of Conventional and Negative Poisson's Ratio Foams
نویسندگان
چکیده
منابع مشابه
Negative Poisson's Ratio Polymeric and Metallic Foams
Foam materials based on metal and several polymers were transformed so that their cellular architectures became re-entrant, ie. with inwardly protruding cell ribs. Foams with re-entrant structures exhibited negative Poisson's ratios as well as greater resilience than conventional foams. Foams with negative Poisson's ratios were prepared using different techniques and materials and their mechani...
متن کاملMicromechanical Analysis of Dynamic Behavior of Conventional and Negative Poisson's Ratio Foams
Both conventional and negative Poisson's ratio foams exhibit dispersion of acoustic waves as well as cut-off frequencies at which the group velocity tends to zero. This macroscopic behavior is attributed to micro-vibration of the foam cell ribs. The purpose of this article is to develop a micromechanical model of the cut-off frequency. This model is based on the resonance of ribs which may be s...
متن کاملHolographic study of conventional and negative Poisson ' s ratio metallic foams : elasticity , yield , and micro - deformation
This article presents an experimental study by holographic interferometry of the following material properties of conventional and negative Poisson's ratio copper foams: Young's moduli, Poisson's ratios, yield strengths, and characteristic lengths associated with inhomogeneous deformation. The Young's modulus and yield strength of the conventional copper foam were comparable to those predicted ...
متن کاملMultifunctional Polymer-Based Graphene Foams with Buckled Structure and Negative Poisson’s Ratio
In this study, we report the polymer-based graphene foams through combination of bottom-up assembly and simple triaxially buckled structure design. The resulting polymer-based graphene foams not only effectively transfer the functional properties of graphene, but also exhibit novel negative Poisson's ratio (NPR) behaviors due to the presence of buckled structure. Our results show that after the...
متن کاملThe properties of copper foams with negative Poisson ' s ratio via resonant ultrasound spectroscopy
1 College of Sciences, Northeastern University, Shenyang 110819, PR China 2 Materials Science Program, University of Wisconsin, Madison, WI 53706-1687, USA 3 Department of Engineering Physics, University of Wisconsin, Madison, WI 53706-1687, USA
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Composite Materials
سال: 1993
ISSN: 0021-9983,1530-793X
DOI: 10.1177/002199839302701203