Other Materials Science and Engineering Commons^™

Comparison Of Beta Backscatter And X-Ray Fluorescence Methods To Measure Coating Thickness, Sergio Palomo, Bernice Mills

STAR Program Research Presentations

This work compares and assesses the effectiveness of beta backscatter (BB) and x-ray fluorescence (XRF) for measuring the thickness of gold coatings on two substrates: silicon and an iron-nickel alloy. A set of samples of known gold coating thickness, ranging from 0.5 – 4.0 microns, was measured in each case along with the substrate alone. In BB the number of electrons (beta particles from a very small radioactive source, Pm-147 in this case) backscattered from a sample in a fixed time period is counted. The XRF method uses x-rays generated in the sample from a primary x-ray beam of higher …

Enhanced Presentation Of Tomographic Data, Carmen Watts Clayton, Bernice E. Mills, George Buffleben, Thien Vu-Nguyen

STAR Program Research Presentations

Solid materials can now be viewed non-destructively with x-rays by tomography; a technique for taking many 2D images of an object at many angles and reconstructing the images into a 3D data cube. The data is next rendered into 2D or 3D still images or movies. By nature, x-ray tomography yields a very large amount of data in three dimensions. Effectively displaying this data to an audience is a challenge.

In this work techniques are explored to improve the presentation methods of movies of both 2D and 3D tomographic data for visual appeal and correct perspective. Finding the optimal ways …