Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 1342-1358 |
| Journal | Physica Status Solidi (B) Basic Research |
| Volume | 253 |
| Issue number | 7 |
| Early online date | 15 Jun 2016 |
| DOIs | |
| Publication status | Published - Jul 2016 |
Fingerprint
Cite this
}
Deformation analysis of reinforced-core auxetic assemblies by close-range photogrammetry. / Shufrin, Igor; Pasternak, Elena; Dyskin, Arcady.
In: Physica Status Solidi (B) Basic Research, Vol. 253, No. 7, 07.2016, p. 1342-1358.Research output: Contribution to journal › Article
TY - JOUR
T1 - Deformation analysis of reinforced-core auxetic assemblies by close-range photogrammetry
AU - Shufrin, Igor
AU - Pasternak, Elena
AU - Dyskin, Arcady
PY - 2016/7
Y1 - 2016/7
N2 - © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, WeinheimIn this article, we present an experimental study validating the concept of the reinforced-core auxetic assemblies. The main distinctive feature of these assemblies is the presence of a reinforcing core in the microstructural units that increases the shear stiffness and thus produces negative Poisson's ratio. We tested a number of prototypes manufactured using the stereolithography and selective laser sintering methods. To measure the deformations, we employed the close-range photogrammetry method, which enables monitoring of locations of unlimited number of points from digital images. We developed a procedure for multi-point measurement of planar deformations using a single digital camera. This procedure allows for continuous measurement of deformations without interruption to the loading sequence. Camera self-calibration is based on multiple images of stable reference points, which enables high accuracy of the measurements even using a consumer grade digital camera. We compare the obtained experimental results with a simplified continuum model. We demonstrate a good agreement between the theoretical predictions and the experimental results.
AB - © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, WeinheimIn this article, we present an experimental study validating the concept of the reinforced-core auxetic assemblies. The main distinctive feature of these assemblies is the presence of a reinforcing core in the microstructural units that increases the shear stiffness and thus produces negative Poisson's ratio. We tested a number of prototypes manufactured using the stereolithography and selective laser sintering methods. To measure the deformations, we employed the close-range photogrammetry method, which enables monitoring of locations of unlimited number of points from digital images. We developed a procedure for multi-point measurement of planar deformations using a single digital camera. This procedure allows for continuous measurement of deformations without interruption to the loading sequence. Camera self-calibration is based on multiple images of stable reference points, which enables high accuracy of the measurements even using a consumer grade digital camera. We compare the obtained experimental results with a simplified continuum model. We demonstrate a good agreement between the theoretical predictions and the experimental results.
U2 - 10.1002/pssb.201552723
DO - 10.1002/pssb.201552723
M3 - Article
VL - 253
SP - 1342
EP - 1358
JO - Physica Status Solidi. B: Basic Solid State Physics
JF - Physica Status Solidi. B: Basic Solid State Physics
SN - 0370-1972
IS - 7
ER -