Reduction in Viscosity of Quasi-2D-Confined Nanoimprint Resin through the Addition of Fluorine-Containing Monomers: Shear Resonance Study

2013 ◽  
Vol 5 (16) ◽  
pp. 7661-7664 ◽  
Author(s):  
Yuzuru Shimazaki ◽  
Shuhei Oinaka ◽  
Shota Moriko ◽  
Kenji Kawasaki ◽  
Satoshi Ishii ◽  
...  
Keyword(s):  
Shear Resonance

Viscosity and Lubricity of Aqueous NaCl Solution Confined between Mica Surfaces Studied by Shear Resonance Measurement

2006 ◽  
Vol 96 (4) ◽  
Author(s):  
Hiroshi Sakuma ◽  
Kenshiro Otsuki ◽  
Kazue Kurihara
Keyword(s):  
Nacl Solution ◽  
Resonance Measurement ◽  
Shear Resonance

Shear Resonance Frequencies of Alluvial Valleys by Rayleigh's Method

1999 ◽  
Vol 15 (3) ◽  
pp. 503-521 ◽  
Author(s):  
Roberto Paolucci
Keyword(s):  
Numerical Solutions ◽  
Sedimentary Basins ◽  
Prediction Errors ◽  
Practical Applications ◽  
Fast Estimation ◽  
True Value ◽  
Standard Code ◽  
Resonance Frequencies ◽  
Shear Resonance

A simple approach based on Rayleigh's method has been used for the fast estimation of the shear resonance frequencies of alluvial valleys. After an example considering a 1-D non-homogeneous configuration, the method is applied to 2-D and 3-D homogeneous simple-shaped valleys, for which numerical solutions exist in the literature. The application of the proposed method to deep non-homogeneous sedimentary basins is then illustrated, showing that even in a rather complex soil configuration the prediction errors do not exceed about 20%. If one considers the uncertainties related to the determination of the mechanical properties of a real soil configuration, this prediction is quite reasonable. Furthermore, the predicted fundamental frequency always provides an upper limit of the true value. Although the predicted results are not very accurate, the proposed procedure may be helpful in several practical applications, such as in the case of complex geological configurations, where the problem exists of assessing in which frequency band 1-D resonance will differ significantly from the 2-D or 3-D one. This is important to decide whether performing more sophisticated analyses of site effects and whether the use of standard code spectral shapes is appropriate.

Shear resonance and torsional oscillator measurements of solid4He under dc rotation

2012 ◽  
Vol 86 (17) ◽  
Author(s):  
W. Choi ◽  
D. Takahashi ◽  
D. Y. Kim ◽  
H. Choi ◽  
K. Kono ◽  
...  
Keyword(s):  
Torsional Oscillator ◽  
Shear Resonance ◽  
Dc Rotation

Exact thickness-shear resonance frequency of electroded piezoelectric crystal plates

2005 ◽  
Vol 6 (9) ◽  
pp. 980-985 ◽  
Author(s):  
Wang Ji ◽  
Shen Li-jun
Keyword(s):  
Resonance Frequency ◽  
Piezoelectric Crystal ◽  
Thickness Shear ◽  
Shear Resonance

scholarly journals A Modified Iterative Automatic Method for Characterization at Shear Resonance: Case Study of Ba0.85Ca0.15Ti0.90Zr0.10O3 Eco-Piezoceramics

Materials ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1666
Author(s):  
Lorena Pardo ◽  
Armando Reyes-Montero ◽  
Álvaro García ◽  
Alfredo Jacas-Rodríguez ◽  
Pilar Ochoa ◽  
...  
Keyword(s):  
Iterative Method ◽  
Piezoelectric Coefficient ◽  
Complex Impedance ◽  
Shear Mode ◽  
Rectangular Plates ◽  
Material Models ◽  
Shear Plate ◽  
Standard Plate ◽  
Shear Resonance

Coupling between electrically excited electromechanical resonances of piezoelectric ceramics is undesirable for the purpose of their characterization, since the material models correspond to monomodal resonances. However, coupling takes place quite often and it is unavoidable at the shear resonance of standard in-plane poled and thickness-excited rectangular plates. The piezoelectric coefficient e15, the elastic compliance s55E and the dielectric permittivity component ε11S for a piezoelectric ceramic can be determined, including all losses, using the automatic iterative method of analysis of the complex impedance curves for the shear mode of an appropriated resonator. This is the non-standard, thickness-poled and longitudinally excited, shear plate. In this paper, the automatic iterative method is modified. The purpose is to be able to deal with the analysis of the impedance curves of the non-standard plate as the periodic phenomena of coupling and decoupling of the main shear resonance and other resonances takes place. This happens when the thickness of the plate is reduced, and its aspect ratio (width of the excitation (w)/thickness for poling (t)) is increased. In this process, the frequency of the shear resonance also increases and meets those of other plate modes periodically. We aim to obtain the best approach for the shear properties of near coupling and to reveal both their validity and the limitations of the thus-obtained information. Finally, we use a plate of a Ba0.85Ca0.15Ti0.90Zr0.10O3 eco-piezoceramic as a case study.

Shear resonance mode decoupling to determine the characteristic matrix of piezoceramics for 3-D modeling

2011 ◽  
Vol 58 (3) ◽  
pp. 646-657 ◽  
Author(s):  
Lorena Pardo ◽  
Alvaro García ◽  
Francisco Montero De Espinosa ◽  
Klaus Brebøl
Keyword(s):  
Resonance Mode ◽  
Characteristic Matrix ◽  
Shear Resonance

scholarly journals Is There any Effect of Sample Sizes on Laboratory Liquefaction Tests?

2019 ◽  
Vol 2 (3) ◽  
pp. 750-757
Author(s):  
Turgay Beyaz ◽  
Şeyda Özçelik
Keyword(s):  
Simple Shear ◽  
Test Results ◽  
Test Apparatus ◽  
Bender Elements ◽  
Shear Tests ◽  
Simple Shear Test ◽  
Sea Sand ◽  
Inner Diameter ◽  
Shear Resonance

Determination of liquefaction potential of sands in laboratory; dynamic three axial, hollow cylindrical torsional shear, resonance column, bender elements and cyclic simple shear tests are used. In this study, the effect of sample size on the determination of liquefaction energy of sandy soils in cyclic simple shear test apparatus was investigated. Uniform clean sea sand was used in the study. The cell inner diameter in which the samples to be tested is placed is 50 mm. Samples were prepared three different sizes with a length/diameter (H/D) ratio of 1, 0.5 and 0.25 and four varied relative densities (Dr: 40%, 50%, 60% and 70%). The samples were subjected to 1D cyclic loading at a frequency of 0.1 Hz under 100 kPa vertical stress and 50 kPa pore pressure. Each experiment was repeated 3 times, with equivalent or closer results considered significant. According to the test results, the liquefaction energy values per volume (J/m3) of the samples of different sizes are different from each other.

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