-Hardfacing is one of the most useful and economic ways to improve the performance of components submitted to severe wear conditions. A study was made to compare the microstructure and abrasion resistance of hardfacing alloys reinforced with primary chromium carbides, the hardfacing alloys were deposited onto M.S. plate by SMAW process. Two different commercial hardfacing electrodes were employ...

In this chapter we give an overview of the effects of various microstructural features on the resulting magnetic properties of magnetic thin films. The role of microstructure on certain properties of materials has a long history of investigation, starting in the discipline of physical metallurgy where the role of microstructure on properties was investigated in great detail [1]. It became clear...

Aiming to quantitatively evaluate the microstructure of polymer-modified bitumen (PMB) for roads, this paper employs the two-dimensional fast Fourier transform (2DFFT) to process the microscopic and numerical images of four PMBs. The related derivative parameters, including the characteristic frequency and wavelength, are computed from the 2D-FFT power spectrum. The results show that the absenc...

Hearing thresholds have been shown to exhibit periodic minima and maxima, a pattern known as threshold microstructure. Microstructure has previously been linked to spontaneous otoacoustic emissions (SOAEs) and normal cochlear function. However, SOAEs at high frequencies (>4 kHz) have been associated with hearing loss or cochlear pathology in some reports. Microstructure would not be expected ne...

Models of the diffusion-weighted signal are of strong interest for population studies of the brain microstructure. These studies are typically conducted by extracting a scalar property from the model and subjecting it to null hypothesis significance testing. This process has two major limitations: the reported p-value is a weak predictor of the reproducibility of findings and evidence for the a...

| A randomized microstructure based on the Voronoi diagram is proposed for micromagnetic models. Simulations illustrate variability of extrinsic magnetic properties with microstructure, medium noise dependence on medium properties, and jitter dependence on trackwidth.

We present a numerical method for the approximation of microstructure in martensitic crystals by piecewise laminates, and we give computational results for several three-dimensional models of martensitic microstructure by using piecewise second-order laminates.

The high-cycle fatigue (HCF) of titanium alloy turbine engine components remains a principal cause of failures in military aircraft engines. A recent initiative sponsored by the United States Air Force has focused on the major drivers for such failures in Ti-6Al-4V, a commonly used turbine blade alloy, specifically for fan and compressor blades. However, as most of this research has been direct...

The objective of this project is the development of a multi-scale simulation tool for designing thermo-mechanical processes to achieve control of microstructure-sensitive properties in materials used in applications of interest to the U.S. Army. As a part of continuing research effort, developments in the year 2004-05 are presented. An efficient large strain homogenization tool has been develop...

On the basis of the market microstructure theory, a continuous time microstructure model is proposed for describing the dynamics of the foreign currency exchange time series with randomness and volatility features. From the microstructure model one may obtain the estimates of two state variables, which represent the market excess demand and liquidity respectively, but can not be directly observ...