Elastic Constants of Grout by Ultrasound

Elastic constants of natural quartz.

The elastic constants of a natural-quartz sphere using resonance-ultrasound spectroscopy (RUS) are measured. The measurements of the near-traction-free vibrational frequencies of the sphere are matched with the predicted frequencies from the dynamic theory of elasticity, with optimized estimates for the elastic constants driving the differences between these sets of frequencies to a minimal val...

Elastic constants of -eucryptite studied by density functional theory

Badri Narayanan,1 Ivar E. Reimanis,1 Edwin R. Fuller, Jr.,2 and Cristian V. Ciobanu3,* 1Department of Metallurgy & Materials Engineering, Colorado School of Mines, Golden, Colorado 80401, USA 2Ceramics Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA 3Division of Engineering, Colorado School of Mines, Golden, Colorado 80401, USA Received 2 January 2010...

Elastic constants of quantum solids by path integral simulations

Two methods are proposed to evaluate the second-order elastic constants of quantum mechanically treated solids. One method is based on path-integral simulations in the NVT ensemble using an estimator for elastic constants Ci j . The other method is based on simulations in the NpT ensemble exploiting the relationship between strain fluctuations and elastic constants. The strengths and weaknesses...

Martensitic Transformation and Elastic Constants

Electromagnetic-resonance-ultrasound Microscopy (erum) for Quantitative Evaluation of Localized Elastic Constants of Solids

This paper presents a new acoustic-resonance microscopy, electromagneticresonanceultrasound microscopy (ERUM), to evaluate the localized elastic constant of a solid material. It is based on the resonance-frequency shift of a vibrating oriented langasite (La3Ga5SiO14) crystal contacting the specimen via a sphere tip. The vibration of langasite is excited and detected by a dynamic electric field ...