Influence of residual stress on the free vibrations of an elastic solid; application to resonant ultrasound spectroscopy (RUS)

2021 ◽  
Vol 150 (4) ◽  
pp. A335-A335
Author(s):  
Christopher M. Kube ◽  
Jared Gillespie
Keyword(s):  
Residual Stress ◽  
Elastic Solid ◽  
Free Vibrations ◽  
Resonant Ultrasound Spectroscopy ◽  
Resonant Ultrasound

Determination of residual stress in spherical balls by resonant ultrasound spectroscopy

2008 ◽  
Vol 41 (2) ◽  
pp. 82-87 ◽  
Author(s):  
Wakako Araki ◽  
Takahiro Kamikozawa ◽  
Tadaharu Adachi
Keyword(s):  
Residual Stress ◽  
Resonant Ultrasound Spectroscopy ◽  
Resonant Ultrasound

scholarly journals Resonant Ultrasound Spectroscopy: Sensitivity Analysis for Anisotropic Materials with Hexagonal Symmetry

2021 ◽  
pp. 1-20
Author(s):  
Christopher Sevigney ◽  
Onome Scott-Emuakpor ◽  
Farhad Farzbod
Keyword(s):  
Elastic Constants ◽  
Material Properties ◽  
Free Vibrations ◽  
Hexagonal Symmetry ◽  
Resonant Ultrasound Spectroscopy ◽  
Cubic Symmetry ◽  
Complete Set ◽  
Resonant Ultrasound ◽  
Non Destructive

Abstract Resonance ultrasound spectroscopy (RUS) is a non-destructive technique for evaluating elastic and an-elastic material properties. The frequencies of free vibrations for a carefully crafted sample are measured, and material properties can be extracted from this. In one popular application, the determination of monocrystal elasticity, the results are not always reliable. In some cases, the resonant frequencies are insensitive to changes in certain elastic constants or their linear combinations. Previous work has been done to characterize these sensitivity issues in materials with isotropic and cubic symmetry. This work examines the sensitivity of elastic constant measurements by the RUS method for materials with hexagonal symmetry, such as titanium-diboride. We investigate the reliability of RUS data and explore supplemental measurements to obtain an accurate and complete set of elastic constants.

scholarly journals Thermal Stresses in Chemically Hardening Elastic Media With Application to the Molding Process

1974 ◽  
Vol 41 (3) ◽  
pp. 647-651 ◽  
Author(s):  
Myron Levitsky ◽  
Bernard W. Shaffer
Keyword(s):  
Residual Stress ◽  
Chemical Reaction ◽  
Thermal Stresses ◽  
Stress Component ◽  
Elastic Solid ◽  
Molding Process ◽  
Hardening Process ◽  
Exothermic Chemical Reaction ◽  
Component Parallel

A method has been formulated for the determination of thermal stresses in materials which harden in the presence of an exothermic chemical reaction. Hardening is described by the transformation of the material from an inviscid liquid-like state into an elastic solid, where intermediate states consist of a mixture of the two, in a ratio which is determined by the degree of chemical reaction. The method is illustrated in terms of an infinite slab cast between two rigid mold surfaces. It is found that the stress component normal to the slab surfaces vanishes in the residual state, so that removal of the slab from the mold leaves the remaining residual stress unchanged. On the other hand, the residual stress component parallel to the slab surfaces does not vanish. Its distribution is described as a function of the parameters of the hardening process.

Young’s moduli of sputter-deposited NiTi films determined by resonant ultrasound spectroscopy: Austenite, R-phase, and martensite

2015 ◽  
Vol 101 ◽  
pp. 24-27 ◽  
Author(s):  
Martina Thomasová ◽  
Petr Sedlák ◽  
Hanuš Seiner ◽  
Michaela Janovská ◽  
Meni Kabla ◽  
...  
Keyword(s):  
Resonant Ultrasound Spectroscopy ◽  
Young’S Moduli ◽  
Resonant Ultrasound ◽  
Sputter Deposited
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