Every linear planar anisotropic elastic material is equivalent, under a linear change of coordinates, to an orthotropic material. Consequently, up to linear changes of variables, there are just two "canonical" planar elastic moduli which determine the properties of any linearly elastic material. Extensions to three-dimensional elasticity and applications are indicated.

%'e present a new first-principles approach to the calculation of effective elastic moduli of composites based on the iterative solution of the Dyson equation for elastic wave scatterings in inhomogeneous media. Application of the method to the examination of elastic scaling behavior of a continuous fractal shows that the moduli associated with different elastic eigenmodes exhibit distinct expo...

In this short paper we show how one may extract elastic properties of materials by probing it with elastic waves and processing the signal that returns (i.e. the scattered waves) in an appropriate way. In particular, we present a linearized inversion scheme to estimate the high–frequency, anisotropic components of the elastic tensor and density (the elastic moduli) in human tissue. For a given ...

Temporal changes of seismic properties, such as velocity, attenuation, anisotropy, and scattering properties, have been inferred by active methods for decades and more recently by passive methods. In particular, passive methods are capable of monitoring seismic properties because they do not require earthquakes but rely on continuously excited signals in the ocean, for example, a collection of ...

UNLABELLED The roles of microarchitecture and types of trabeculae in determining elastic modulus of trabecular bone have been studied in microCT images of 29 trabecular bone samples by comparing their Young's moduli calculated by finite element analysis (FEA) with different trabecular type-specific reconstructions. The results suggest that trabecular plates play an essential role in determining...

.......................................................................................... v CHAPTER 1: INTRODUCTION.................................................................. 1 CHAPTER 2: LABUSCH PARAMETER AND CAMPBELL PENETRATION DEPTH.......................................................... 6 Introduction...................................................................................

During the immune response, neutrophils display localized mechanical events by interacting with their environment through the micro-vascular transit, trans-endothelial, and trans-epithelial migration. Nano-mechanical studies of human neutrophils on localized nano-domains could provide the essential information for understanding their immune responsive functions. Using the Atomic Force Microscop...

Human dentin exhibits a mechanical behavior like a functionally graded material with properties dependent on many physical and biological factors. This work describes and critically analyzes the methods to measure elastic moduli and damping and the corresponding results reported in literature. Furthermore, Mechanical Spectroscopy (MS) experiments have been carried out to determine with high pre...

The single-crystal elastic moduli of alpha-quartz were measured to above 20 GPa in a diamond-anvil cell by Brillouin spectroscopy. The behavior of the elastic moduli indicates that the high-pressure phase transition in quartz is ferroelastic in nature and is driven by softening of C44 through one of the Born stability criteria. The trends in elastic moduli confirm theoretical predictions, but t...