Details
| Original language | English |
|---|---|
| Pages (from-to) | 983-1003 |
| Number of pages | 21 |
| Journal | Journal of rheology |
| Volume | 66 |
| Issue number | 5 |
| Early online date | 26 Aug 2022 |
| Publication status | Published - 1 Sept 2022 |
Abstract
The piezoelectric shear gauge (PSG) [Christensen and Olsen, Rev. Sci. Instrum. 66, 5019 (1995)] is a rheometric technique developed to measure the complex shear modulus of viscous liquids near their glass transition temperature. We report recent advances to the PSG technique: (1) The data extraction procedure is optimized, which extends the upper limit of the frequency range of the method to between 50 and 70 kHz. (2) The measuring cell is simplified to use only one piezoelectric ceramic disk instead of three. We present an implementation of this design intended for liquid samples. Data obtained with this design revealed that a soft extra spacer is necessary to allow for thermal contraction of the sample in the axial direction. Model calculations show that flow in the radial direction is hindered by the confined geometry of the cell when the liquid becomes viscous upon cooling. The method is especially well-suited for - but not limited to - glassy materials.
ASJC Scopus subject areas
- Materials Science(all)
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
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In: Journal of rheology, Vol. 66, No. 5, 01.09.2022, p. 983-1003.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Piezoelectric shear rheometry
T2 - Further developments in experimental implementation and data extraction
AU - Mikkelsen, Mathias
AU - Eliasen, Kira L.
AU - Lindemann, Niclas
AU - Moch, Kevin
AU - Böhmer, Roland
AU - Karimi-Varzaneh, Hossein Ali
AU - Lacayo-Pineda, Jorge
AU - Jakobsen, Bo
AU - Niss, Kristine
AU - Christensen, Tage
AU - Hecksher, Tina
N1 - Funding Information: This work was supported by the VILLUM Foundation’s Matter Grant (No. 16515) and by Innovation Fund Denmark (Case No. 9065-00002B). Work at TU Dortmund was supported by the Deutsche Forschungsgemeinschaft (Grant No. 461147152).
PY - 2022/9/1
Y1 - 2022/9/1
N2 - The piezoelectric shear gauge (PSG) [Christensen and Olsen, Rev. Sci. Instrum. 66, 5019 (1995)] is a rheometric technique developed to measure the complex shear modulus of viscous liquids near their glass transition temperature. We report recent advances to the PSG technique: (1) The data extraction procedure is optimized, which extends the upper limit of the frequency range of the method to between 50 and 70 kHz. (2) The measuring cell is simplified to use only one piezoelectric ceramic disk instead of three. We present an implementation of this design intended for liquid samples. Data obtained with this design revealed that a soft extra spacer is necessary to allow for thermal contraction of the sample in the axial direction. Model calculations show that flow in the radial direction is hindered by the confined geometry of the cell when the liquid becomes viscous upon cooling. The method is especially well-suited for - but not limited to - glassy materials.
AB - The piezoelectric shear gauge (PSG) [Christensen and Olsen, Rev. Sci. Instrum. 66, 5019 (1995)] is a rheometric technique developed to measure the complex shear modulus of viscous liquids near their glass transition temperature. We report recent advances to the PSG technique: (1) The data extraction procedure is optimized, which extends the upper limit of the frequency range of the method to between 50 and 70 kHz. (2) The measuring cell is simplified to use only one piezoelectric ceramic disk instead of three. We present an implementation of this design intended for liquid samples. Data obtained with this design revealed that a soft extra spacer is necessary to allow for thermal contraction of the sample in the axial direction. Model calculations show that flow in the radial direction is hindered by the confined geometry of the cell when the liquid becomes viscous upon cooling. The method is especially well-suited for - but not limited to - glassy materials.
UR - http://www.scopus.com/inward/record.url?scp=85137103099&partnerID=8YFLogxK
U2 - 10.48550/arXiv.2201.12529
DO - 10.48550/arXiv.2201.12529
M3 - Article
AN - SCOPUS:85137103099
VL - 66
SP - 983
EP - 1003
JO - Journal of rheology
JF - Journal of rheology
SN - 0148-6055
IS - 5
ER -