Results 211 to 220 of about 2,340,427 (274)

Magnified hard X-ray microtomography

2000 IEEE Nuclear Science Symposium. Conference Record (Cat. No.00CH37149), 2002
Summary form only given. In the field of hard X-ray microtomography one goal is the enhancement of resolution. Several ways can be followed to obtain this objective. One possibility is the use of high-resolution X-ray films or detector screens coupled with a microscope optical system.
C. Rau, T. Weitkamp, A. Snigirev, C.G. Schroer, J. Tummler, B. Lengeler   +5 more
openaire   +1 more source

Synchrotron X-Ray Microtomography

1988
We present results obtained with a new form of 3-D microscopy. The technique is based on tomographic methods and we refer to it as 3-D Microtomography. When used with a tunable X-ray source, it is a powerful diagnostic and research tool for a wide variety of materials studies problems.
K. L. D’Amico, H. W. Deckman, B. P. Flannery, W. G. Roberge   +3 more
openaire   +1 more source

Energy-modulated x-ray microtomography

Review of Scientific Instruments, 1988
We describe an instrument for computerized x-ray tomography which can provide fully three-dimensional examination of small samples (a few millimeters to a few centimeters) with resolution variable from 5 to 100 μm. Elemental and chemical-state distributions are obtained with high resolution by modulating the energy of the incident x-ray beam.
John H. Kinney, Quintin C. Johnson, R. Allyn Saroyan, Monte C. Nichols, Ulrich Bonse, Rudolf Nusshardt, Reinhardt Pahl   +6 more
openaire   +1 more source

Assessment of the ablation characteristics of carbon/phenolic composites using X-ray microtomography

Composites Science And Technology, 2019
In this study, the ablation characteristics of carbon/phenolic composites were evaluated using X-ray microtomography. The ablation tests of carbon/phenolic composites were performed using a 0.4 MW arc-heated wind tunnel, and the composite samples were ...
J. Cheon, E. Shin
semanticscholar   +1 more source

A fiber-segmentation algorithm for composites imaged using X-ray microtomography: Development and validation

Composites. Part A, Applied science and manufacturing, 2019
This study proposes a new algorithm for three-dimensional segmentation of fibers in multi-directional fiber-reinforced composites (FRCs) imaged using X-ray microtomography (µCT). The proposed algorithm uses synthetic fiber-templates and template matching
Peter J. Creveling, William W. Whitacre, M. Czabaj   +2 more
semanticscholar   +1 more source

Direct Determination of Dissolution Rates at Crystal Surfaces Using 3D X-ray Microtomography

ACS Earth and Space Chemistry, 2018
Investigations of mineral surface reactivity have recently challenged the classical approach of determining dissolution rates from mineral powders as crystals often exhibit heterogeneous and/or anisotropic reactivity.
C. Noiriel, Matthias Oursin, G. Saldi, D. Haberthür   +3 more
semanticscholar   +1 more source

X-ray microtomography of bones and teeth

Physiological Measurement, 1996
X-ray microtomography is a miniaturized version of computerized axial tomography with a resolution of the order of micrometres. In the biomedical field it is particularly useful in the study of hard tissue because of its ability to accurately measure the linear attenuation coefficient.
G R, Davis, F S, Wong
openaire   +2 more sources

X-ray microtomography of materials

International Materials Reviews, 1999
X-ray microtomography allows imaging of the interior microstructure of materials non- destructively and with spatial resolution which can approach that of optical microscopy (typically, no better t...
openaire   +1 more source

Combined mechanical and 3D-microstructural analysis of strain-hardening cement-based composites (SHCC) by in-situ X-ray microtomography

, 2020
The paper presents the results of a series of combined mechanical and in-situ morphological investigations on highstrength strain-hardening cement-based composites (SHCC).
R. Lorenzoni, I. Curosu, Fabien Leonard, S. Paciornik, V. Mechtcherine, F. Silva, G. Bruno   +6 more
semanticscholar   +1 more source

Hard X-Ray Microtomography Using X-Ray Imaging Optics

Japanese Journal of Applied Physics, 2001
The first experiment to test the hard X-ray microtomography using X-ray imaging optics was carried out at the undulator beamline BL47XU of SPring-8. A Wolter type grazing incidence mirror was used as an objective. A charge coupled device (CCD) camera coupled with a phosphor screen and a relay lens (pixel size: 6 µm×6 µm, spatial resolution: 12.3 µm
Akihisa Takeuchi Akihisa Takeuchi, Kentaro Uesugi Kentaro Uesugi, Yoshio Suzuki Yoshio Suzuki, Sadao Aoki Sadao Aoki   +3 more
openaire   +1 more source