Shear Modulus Determination Using the Smartphone in a Torsion Pendulum

2021 ◽  
Vol 59 (4) ◽  
pp. 268-271
Author(s):  
Andreas Kaps ◽  
Tobias Splith ◽  
Frank Stallmach
Keyword(s):  
Shear Modulus ◽  
Torsion Pendulum

A Modified torsion pendulum for measuring the shear modulus of a single micro-sized filament

2014 ◽  
Vol 27 (3) ◽  
pp. 221-233 ◽  
Author(s):  
Dabiao Liu ◽  
Yuming He ◽  
Peng Hu ◽  
Zhipeng Gan ◽  
Huaming Ding
Keyword(s):  
Shear Modulus ◽  
Torsion Pendulum

A torsion pendulum for the determination of shear modulus and damping around 1 Hz

1967 ◽  
Vol 6 (4) ◽  
pp. 316-323 ◽  
Author(s):  
C. J. Nederveen ◽  
C. W. van der Wal
Keyword(s):  
Shear Modulus ◽  
Torsion Pendulum

An Acoustic Study of Irreversible Structural Relaxation in a Bulk Metallic Glass

2006 ◽  
Vol 115 ◽  
pp. 113-120 ◽  
Author(s):  
N.P. Kobelev ◽  
E.L. Kolyvanov ◽  
V.A. Khonik
Keyword(s):  
Heat Treatment ◽  
Activation Energy ◽  
Energy Spectrum ◽  
Shear Modulus ◽  
Structural Relaxation ◽  
Glass Structure ◽  
Torsion Pendulum ◽  
Frequency Range ◽  
Acoustic Study ◽  
Frequency Temperature

Irreversible structural relaxation of bulk amorphous Zr52.5Ti5Cu17.9Ni14.6Al10 was studied by means of logarithmic decrement and shear modulus measurements using an inverse torsion pendulum in the frequency range from 5 Hz to 40 Hz. Irreversible contributions to the decrement and shear modulus and their frequency, temperature, and time dependences were investigated. The activation energy spectrum of irreversible structural relaxation has been reconstructed. It has been shown that irreversible structural relaxation can be regenerated by a special heat treatment. The results obtained are discussed within the framework of a phenomenological model, which implies existence of two-well relaxation centers in the glass structure.

Rubber-Thermoplastic Compositions. Part III. Predicting Elastic Moduli of Melt Mixed Rubber-Plastic Blends

1981 ◽  
Vol 54 (1) ◽  
pp. 91-100 ◽  
Author(s):  
A. Y. Coran ◽  
R. Patel
Keyword(s):  
Shear Modulus ◽  
Elastic Moduli ◽  
Volume Fraction ◽  
Material Selection ◽  
Adjustable Parameter ◽  
Dynamic Shear Modulus ◽  
Torsion Pendulum ◽  
Molten State ◽  
Dynamic Shear ◽  
The Individual

Abstract Blends prepared by mixing rubbers with plastics in the molten state have been known and used for a number of years. The stiffness of such blends vary widely with both the proportions of rubber to plastic and with material selection, even at equivalent rubber to plastic proportions. This report describes correlations between blend stiffness and the properties of the individual blend components. Dynamic shear modulus G′, determined by torsion pendulum measurements, was used to characterize the stiffnesses of the blends. Values of G′ were related to the moduli of the hard and soft (plastic and rubber) phases, G′H and G′S, and the volume fraction of plastic ϕH through a single adjustable parameter by means of a recently proposed relationship. The adjustable parameter was then correlated with other properties of the blend components. In contrast with the work reported in the first two papers of this series, this report is on compositions in which the rubber is not crosslinked.

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