Determination of elastic moduli of rock samples using resonant ultrasound spectroscopy

2002 ◽  
Vol 111 (4) ◽  
pp. 1667-1674 ◽  
Author(s):  
TJ Ulrich ◽  
K. R. McCall ◽  
R. A. Guyer
Keyword(s):  
Elastic Moduli ◽  
Resonant Ultrasound Spectroscopy ◽  
Rock Samples ◽  
Resonant Ultrasound

scholarly journals Publisher’s Note: “Determination of single crystal elastic moduli of KTb3F10 by resonant ultrasound spectroscopy” [J. Appl. Phys 128, 165104 (2020)]

2020 ◽  
Vol 128 (23) ◽  
pp. 239902
Author(s):  
Ashiwini Balodhi ◽  
Kelvin Chang ◽  
Kevin T. Stevens ◽  
Sunil K. Chakrapani ◽  
Susan M. Ennaceur ◽  
...  
Keyword(s):  
Single Crystal ◽  
Elastic Moduli ◽  
Resonant Ultrasound Spectroscopy ◽  
Resonant Ultrasound

Determination of single crystal elastic moduli of KTb3F10 by resonant ultrasound spectroscopy

2020 ◽  
Vol 128 (16) ◽  
pp. 165104
Author(s):  
Ashiwini Balodhi ◽  
Kelvin Chang ◽  
Kevin T. Stevens ◽  
Sunil K. Chakrapani ◽  
Susan M. Ennaceur ◽  
...  
Keyword(s):  
Single Crystal ◽  
Elastic Moduli ◽  
Resonant Ultrasound Spectroscopy ◽  
Resonant Ultrasound

Elastic properties of Zr-based bulk metallic glasses studied by resonant ultrasound spectroscopy

2007 ◽  
Vol 22 (2) ◽  
pp. 364-367 ◽  
Author(s):  
Zhiying Zhang ◽  
Veerle Keppens ◽  
Peter K. Liaw ◽  
Yoshihiko Yokoyama ◽  
Akihisa Inoue
Keyword(s):  
Mechanical Properties ◽  
Elastic Properties ◽  
Metallic Glasses ◽  
Elastic Moduli ◽  
Accurate Determination ◽  
Bulk Metallic Glasses ◽  
Resonant Ultrasound Spectroscopy ◽  
Resonant Ultrasound ◽  
Longitudinal Modulus

We report measurements of the elastic properties of Zr-based bulk metallic glasses, Zr52.5Cu17.9Ni14.6Al10Ti5, Zr50Cu30Ni10Al10, and Zr50Cu40Al10 between 5 K and 300 K. Both the shear and longitudinal modulus have been measured as a function of temperature, allowing accurate determination of the Poisson’s ratio and the related ratio of bulk modulus to shear modulus, K/G. These data make it possible to assess the influence of the alloy’s composition on the mechanical properties and enable an evaluation of the correlation between the elastic moduli and the ductility of the alloys.

Resonant ultrasound spectroscopy of silicon carbide ceramics SiC‒AlN

2021 ◽  
pp. 136-140
Author(s):  
E. G. Pashuk ◽  
G. D Kardashova ◽  
Sh. A. Khalilov
Keyword(s):  
Silicon Carbide ◽  
Elastic Moduli ◽  
Ultrasonic Spectroscopy ◽  
Resonant Ultrasound Spectroscopy ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Complete Set ◽  
Resonant Ultrasound ◽  
Carbide Ceramics ◽  
Silicon Carbide Ceramics

The paper discusses the possibility of using resonant ultrasonic spectroscopy (RUS) as a source of information for the physics and technology of obtaining silicon carbide ceramics by the example of samples of the composition SiC ‒ 25 % AlN, obtained by the method of spark plasma sintering. The possibility of obtaining a complete set of elastic moduli (EM) of samples with an error of less than 1 % is shown. At the same time, the requirements for surface quality are significantly reduced. The revealed functional relationship between EM and porosity makes it possible to create a non-destructive method of porosity control and calculate the elastic moduli at zero porosity (i. e., the elastic modulus of the ceramic matrix EM0). Comparison of EM0 samples obtained at different parameters of the technological process allows determining their optima values..

scholarly journals Increasing contribution of grain boundary compliance to polycrystalline ice elasticity as temperature increases

2018 ◽  
Vol 64 (246) ◽  
pp. 669-674
Author(s):  
COLIN M. SAYERS
Keyword(s):  
Grain Boundary ◽  
Grain Boundaries ◽  
Orientation Distribution ◽  
Resonant Ultrasound Spectroscopy ◽  
Wave Velocities ◽  
Polycrystalline Ice ◽  
Resonant Ultrasound ◽  
Increasing Temperature ◽  
Shear Compliance

ABSTRACTMeasured elastic stiffnesses of ice polycrystals decrease with increasing temperature due to a decrease in grain boundary stiffness with increasing temperature. In this paper, we represent grain boundaries as imperfectly bonded interfaces, across which traction is continuous, but displacement may be discontinuous. We express the additional compliance due to grain boundaries in terms of a second-rank and a fourth-rank tensor, which quantify the effect on elastic wave velocities of the orientation distribution as well as the normal and shear compliances of the grain boundaries. Measurement of the elastic stiffnesses allows determination of the components of these tensors. Application of the method to resonant ultrasound spectroscopy measurements made on ice polycrystals enables determination of the ratio BN/BS of the normal to shear compliance of the grain boundaries, which are found to be more compliant in shear than in compression. The ratio BN/BS is small at low temperatures, but increases as temperature increases, implying that the normal compliance increases relative to the shear compliance as temperature increases.

Determination of the Hydrogen Concentration in Zr-2.5Nb Alloy by a Resonant Ultrasound Spectroscopy

2006 ◽  
Vol 321-323 ◽  
pp. 1576-1579
Author(s):  
Yong Moo Cheong ◽  
Young Suk Kim
Keyword(s):  
Hydrogen Concentration ◽  
Zirconium Alloy ◽  
Nuclear Reactor ◽  
Zirconium Alloys ◽  
Resonant Ultrasound Spectroscopy ◽  
Heavy Water Reactor ◽  
Resonant Ultrasound ◽  
Non Destructive

Zirconium alloys are used for many applications in nuclear components, such as the pressure tube material in a pressurized heavy water reactor, nuclear fuel cladding, etc. One of the problems during the operation of a nuclear reactor is the degradation of the zirconium alloys, which is due to an increase of the hydrogen content in the zirconium alloy. Therefore a non-destructive determination of the hydrogen concentration in zirconium alloy is one of the important issues that need to be addressed. The resonant ultrasound spectroscopy (RUS) technique is evaluated for a characterization of the hydrogen concentration in Zr-2.5Nb alloy. Referring to the terminal solid solubility for dissolution (TSSD) of Zr-2.5Nb alloy, the plot of the mechanical damping coefficient (Q-1) versus the temperature or the deviation of the resonant frequency for the temperature (df/dT) versus the temperature was correlated for the hydrogen concentration in Zr-2.5Nb alloy. It was found that the temperature at an abrupt change of the slope can be correlated with the hydrogen concentration of the Zr-2.5Nb alloy.

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