High Resolution X-Ray Computed Tomography for Petrological Characterization of Speleothems

High-resolution X-ray computed tomography of impactites

[1] High-resolution X-ray computed tomography (HRXCT) is a nondestructive method used to study the interiors of opaque solid objects. Here we present the results of a first application of the HRXCT method to imaging the interior of impactites, in particular, suevites (glass-bearing impact breccias) from the Bosumtwi (Ghana) and Ries (Germany) craters and a Muong Nong–type tektite from Thailand....

Quantitative Characterization of Asphalt Concretes Using High-Resolution X-ray Computed Tomography (CT)

X-ray computed tomography.

X-ray computed tomography (CT), introduced into clinical practice in 1972, was the first of the modern slice-imaging modalities. To reconstruct images mathematically from measured data and to display and to archive them in digital form was a novelty then and is commonplace today. CT has shown a steady upward trend with respect to technology, performance and clinical use independent of predictio...

High Resolution X-ray-Induced Acoustic Tomography

Absorption based CT imaging has been an invaluable tool in medical diagnosis, biology, and materials science. However, CT requires a large set of projection data and high radiation dose to achieve superior image quality. In this letter, we report a new imaging modality, X-ray Induced Acoustic Tomography (XACT), which takes advantages of high sensitivity to X-ray absorption and high ultrasonic r...

The Critical Role of High Resolution X-ray Micro- Computed Tomography for Ultra-thin Wall Space Component Characterization

A high resolution micro-computed tomography (μCT) system complemented by specialized hardware and software tools were used to provide quantitative characterization for a tapered ultrathin wall space component at NASA. The CT data served two purposes: first to assess whether an acceptable flaw condition based on acceptable use requirements existed and second to provide comprehensive flaw measure...