scholarly journals Analysis of Sn-Bi Solders: X-ray Micro Computed Tomography Imaging and Microstructure Characterization in Relation to Properties and Liquid Phase Healing Potential

Materials ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 153
Author(s):  
Georg Siroky ◽  
Elke Kraker ◽  
Jördis Rosc ◽  
Dietmar Kieslinger ◽  
Roland Brunner ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Liquid Phase ◽  
Elastic Anisotropy ◽  
Primary Phase ◽  
Micro Computed Tomography ◽  
X Ray ◽  
Microstructural Parameters ◽  
Semi Solid ◽  
Tomography Data ◽  
Mean Intercept Length

This work provides an analysis of X-ray micro computed tomography data of Sn-xBi solders with x = 20, 30, 35, 47, 58 wt.% Bi. The eutectic thickness, fraction of eutectic and primary phase are analyzed. Furthermore, the 3D data is evaluated by means of morphology parameters, such as, shape complexity, flatness, elongation and mean intercept length tensor. The investigated alloys are categorized in three groups based on their morphology, which are described as “complex dominant”, “complex- equiaxed” and “mixed”. The mechanical behavior of Sn-Bi alloys in the semi-solid configuration and the correlation with microstructural parameters are discussed. A varying degree of geometric anisotropy of the investigated alloys is found through the mean intercept length tensor. Representative volume element models for finite element simulations (RVE-FEM) are created from tomography data of each alloy to analyze a correlation of geometric and elastic anisotropy. The simulations reveal an elastic isotropic behavior due to the small difference of elastic constants of primary and eutectic phase. A discussion of properties in the semi-solid state and liquid phase healing is provided.

scholarly journals Grains, grids and mineral surfaces: approaches to grain-scale matrix modeling based on X-ray micro-computed tomography data

2019 ◽  
Vol 1 (10) ◽  
Author(s):  
Urban Svensson ◽  
Paolo Trinchero ◽  
Michel Ferry ◽  
Mikko Voutilainen ◽  
Björn Gylling ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Mineral Surfaces ◽  
Micro Computed Tomography ◽  
X Ray ◽  
Matrix Modeling ◽  
Scale Matrix ◽  
Tomography Data

scholarly journals Perspectives of the Tooth Restoration Technology Based on the Computed Tomography Data

2018 ◽  
Vol 155 ◽  
pp. 01004
Author(s):  
Maxim Putrik ◽  
Vladimir Ivanov ◽  
Igor Antsygin
Keyword(s):  
Computed Tomography ◽  
Processing System ◽  
Cone Beam ◽  
Tooth Surface ◽  
X Rays ◽  
Micro Computed Tomography ◽  
X Ray ◽  
Tomography Method ◽  
Cone Beam Tomography ◽  
Tomography Data

The aim of the study is to create an image processing system, which allows dentists to create tooth surface automatically. X-rays images of jaws from the cone beam tomography or the spiral computed tomography and images from the micro-computed tomography are the initial data for processing. Example of using the combination of optical and x-ray images in the dentistry is described. Also, it was shown how to use the microcomputed tomography method to plan the placement of orthopedic structures on the lost teeth sites.

Morphology and Affinities of Ampelocissites Seeds (Vitaceae: Ampelopsis clade) from the Paleogene of Texas, USA

2020 ◽  
Vol 45 (3) ◽  
pp. 478-482
Author(s):  
Steven R. Manchester
Keyword(s):  
Computed Tomography ◽  
Cross Sections ◽  
Seed Coat ◽  
Ct Scanning ◽  
Seed Morphology ◽  
Early Eocene ◽  
Micro Computed Tomography ◽  
X Ray ◽  
Fossil Seeds ◽  
Fossil Genus

Abstract—The type material on which the fossil genus name Ampelocissites was established in 1929 has been reexamined with the aid of X-ray micro-computed tomography (μ-CT) scanning and compared with seeds of extant taxa to assess the relationships of these fossils within the grape family, Vitaceae. The specimens were collected from a sandstone of late Paleocene or early Eocene age. Although originally inferred by Berry to be intermediate in morphology between Ampelocissus and Vitis, the newly revealed details of seed morphology indicate that these seeds represent instead the Ampelopsis clade. Digital cross sections show that the seed coat maintains its thickness over the external surfaces, but diminishes quickly in the ventral infolds. This feature, along with the elliptical chalaza and lack of an apical groove, indicate that Ampelocissites lytlensis Berry probably represents Ampelopsis or Nekemias (rather than Ampelocissus or Vitis) and that the generic name Ampelocissites may be useful for fossil seeds with morphology consistent with the Ampelopsis clade that lack sufficient characters to specify placement within one of these extant genera.

INVESTIGATION OF AUBRITES THROUGH INTEGRATION OF 3D MODAL MINERALOGY WITH X-RAY MICRO-COMPUTED TOMOGRAPHY AND GEOCHEMISTRY

2018 ◽  
Author(s):  
Zoë E. Wilbur ◽  
◽  
Arya Udry ◽  
Arya Udry ◽  
Daniel M. Coleff ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Micro Computed Tomography ◽  
X Ray

scholarly journals Investigation of opening eye defects and effects of different ripening profiles on eye structure in semi-hard cheese using X-ray micro-computed tomography

2021 ◽  
Vol 28 ◽  
pp. 100190
Author(s):  
Jaqueline Auer ◽  
Michael Reiter ◽  
Sascha Senck ◽  
Andreas Reiter ◽  
Johann Kastner ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Micro Computed Tomography ◽  
X Ray ◽  
Hard Cheese

scholarly journals 3D visualisation of voids in grapevine flowers and berries using X‐ray micro computed tomography

2021 ◽  
Author(s):  
Z. Xiao ◽  
T. Stait‐Gardner ◽  
S.A. Willis ◽  
W.S. Price ◽  
F.J. Moroni ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Micro Computed Tomography ◽  
X Ray ◽  
3D Visualisation

Identification of corrosion products and 3D distribution in reinforced concrete using X-ray micro computed tomography

2019 ◽  
Vol 207 ◽  
pp. 304-315 ◽  
Author(s):  
Guohao Fang ◽  
Weijian Ding ◽  
Yuqing Liu ◽  
Jianchao Zhang ◽  
Feng Xing ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Reinforced Concrete ◽  
Corrosion Products ◽  
Micro Computed Tomography ◽  
X Ray
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