TY - JOUR
T1 - Novel approach for measuring the effective shear modulus of porous materials
AU - Pyatigorets, Andrey V.
AU - Labuz, Joseph F.
AU - Mogilevskaya, Sofia G.
AU - Stolarski, Henryk K.
N1 - Funding Information:
Acknowledgements Partial support for this work was provided by the National Science Foundation, Grant Number CMMI-0825454.
PY - 2010/2
Y1 - 2010/2
N2 - A new approach is proposed for the experimental study of the effective shear modulus of porous elastic materials using the uniaxial tension test. The idea is to measure strains at a few points surrounding a cluster of holes that represents the structure of the material. The representative cluster is placed in the material with the same elastic properties as those of the matrix. The measured strains lead to the properties of the equivalent circular inhomogeneity, which would produce the same elastic fields as from the cluster. An aluminum plate containing a cluster of seven circular or hexagonal holes was used. The effective shear modulus obtained from the strain data was compared with theoretical predictions and various bounds, and it was shown that the laboratory estimated values are quite accurate. The experimental technique can be used for the determination of the effective Poisson's ratio of porous media and/or cellular solids if more detailed strain data are obtained.
AB - A new approach is proposed for the experimental study of the effective shear modulus of porous elastic materials using the uniaxial tension test. The idea is to measure strains at a few points surrounding a cluster of holes that represents the structure of the material. The representative cluster is placed in the material with the same elastic properties as those of the matrix. The measured strains lead to the properties of the equivalent circular inhomogeneity, which would produce the same elastic fields as from the cluster. An aluminum plate containing a cluster of seven circular or hexagonal holes was used. The effective shear modulus obtained from the strain data was compared with theoretical predictions and various bounds, and it was shown that the laboratory estimated values are quite accurate. The experimental technique can be used for the determination of the effective Poisson's ratio of porous media and/or cellular solids if more detailed strain data are obtained.
UR - https://www.scopus.com/pages/publications/76649091240
UR - https://www.scopus.com/pages/publications/76649091240#tab=citedBy
U2 - 10.1007/s10853-009-4023-5
DO - 10.1007/s10853-009-4023-5
M3 - Article
AN - SCOPUS:76649091240
SN - 0022-2461
VL - 45
SP - 936
EP - 945
JO - Journal of Materials Science
JF - Journal of Materials Science
IS - 4
ER -