scholarly journals Recent Progress in Metallurgical Bonding Mechanisms at the Liquid/Solid Interface of Dissimilar Metals Investigated via in situ X-ray Imaging Technologies

2021 ◽  
Vol 34 (2) ◽  
pp. 145-168
Author(s):  
Zongye Ding ◽  
Naifang Zhang ◽  
Liao Yu ◽  
Wenquan Lu ◽  
Jianguo Li ◽  
...  
Keyword(s):  
Recent Progress ◽  
Dissimilar Metals ◽  
X Ray ◽  
Imaging Technologies ◽  
Solid Interface ◽  
X Ray Imaging ◽  
Metallurgical Bonding ◽  
Bonding Mechanisms

scholarly journals Principles of Different X-ray Phase-Contrast Imaging: A Review

2021 ◽  
Vol 11 (7) ◽  
pp. 2971
Author(s):  
Siwei Tao ◽  
Congxiao He ◽  
Xiang Hao ◽  
Cuifang Kuang ◽  
Xu Liu
Keyword(s):  
Biological Samples ◽  
Phase Contrast ◽  
Recent Progress ◽  
Phase Contrast Imaging ◽  
Contrast Imaging ◽  
X Ray ◽  
X Ray Imaging ◽  
Internal Structures ◽  
X Ray Absorption ◽  
Made In

Numerous advances have been made in X-ray technology in recent years. X-ray imaging plays an important role in the nondestructive exploration of the internal structures of objects. However, the contrast of X-ray absorption images remains low, especially for materials with low atomic numbers, such as biological samples. X-ray phase-contrast images have an intrinsically higher contrast than absorption images. In this review, the principles, milestones, and recent progress of X-ray phase-contrast imaging methods are demonstrated. In addition, prospective applications are presented.

scholarly journals Synchrotron X-ray imaging and ultrafast tomography in situ study of the fragmentation and growth dynamics of dendritic microstructures in solidification under ultrasound

2021 ◽  
pp. 116796
Author(s):  
Zhiguo Zhang ◽  
Chuangnan Wang ◽  
Billy Koe ◽  
Christian M. Schlepütz ◽  
Sarah Irvine ◽  
...  
Keyword(s):  
Growth Dynamics ◽  
X Ray ◽  
In Situ Study ◽  
X Ray Imaging ◽  
Dendritic Microstructures

scholarly journals A novel experimental setup for in situ optical and X-ray imaging of laser sintering of polymer particles

2019 ◽  
Vol 90 (8) ◽  
pp. 083905 ◽  
Author(s):  
Prakhyat Hejmady ◽  
Lucien C. Cleven ◽  
Lambèrt C. A. van Breemen ◽  
Patrick D. Anderson ◽  
Ruth Cardinaels
Keyword(s):  
Laser Sintering ◽  
Experimental Setup ◽  
Polymer Particles ◽  
X Ray ◽  
X Ray Imaging

scholarly journals Ammonothermal Synthesis of Earth-Abundant Nitride Semiconductors ZnSiN2 and ZnGeN2 and Dissolution Monitoring by In Situ X-ray Imaging

2017 ◽  
Vol 23 (50) ◽  
pp. 12275-12282 ◽  
Author(s):  
Jonas Häusler ◽  
Saskia Schimmel ◽  
Peter Wellmann ◽  
Wolfgang Schnick
Keyword(s):  
Nitride Semiconductors ◽  
X Ray ◽  
X Ray Imaging ◽  
Earth Abundant

scholarly journals In Situ Analysis of Laser Powder Bed Fusion Using Simultaneous High-Speed Infrared and X-ray Imaging

JOM ◽  
2020 ◽  
Vol 73 (1) ◽  
pp. 201-211 ◽  
Author(s):  
Benjamin Gould ◽  
Sarah Wolff ◽  
Niranjan Parab ◽  
Cang Zhao ◽  
Maria Cinta Lorenzo-Martin ◽  
...  
Keyword(s):  
High Speed ◽  
In Situ Analysis ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Powder Bed ◽  
X Ray ◽  
X Ray Imaging

Gamma Ray and X-Ray Imaging Studies of the Location and Shape of the Melt-Solid Interface during Bridgman Growth of Germanium and Lead-Tin-Telluride

1992 ◽  
pp. 1295-1300 ◽  
Author(s):  
R. T. Simchick ◽  
S. Sorokach ◽  
A. L. Fripp ◽  
W. J. Debnam ◽  
R. F. Berry ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Bridgman Growth ◽  
Imaging Studies ◽  
X Ray ◽  
Solid Interface ◽  
Tin Telluride ◽  
X Ray Imaging ◽  
Lead Tin Telluride

scholarly journals Low Dose X-Ray Sources and High Quantum Efficiency Sensors: The Next Challenge in Dental Digital Imaging?

2014 ◽  
Vol 2014 ◽  
pp. 1-7
Author(s):  
Arnav R. Mistry ◽  
Daniel Uzbelger Feldman ◽  
Jie Yang ◽  
Eric Ryterski
Keyword(s):  
Low Dose ◽  
Image Resolution ◽  
X Ray ◽  
Imaging Technologies ◽  
Group 4 ◽  
X Ray Imaging ◽  
Group 3 ◽  
Group 5 ◽  
Group 2 ◽  
Group 1

Objective(s). The major challenge encountered to decrease the milliamperes (mA) level in X-ray imaging systems is the quantum noise phenomena. This investigation evaluated dose exposure and image resolution of a low dose X-ray imaging (LDXI) prototype comprising a low mA X-ray source and a novel microlens-based sensor relative to current imaging technologies.Study Design. A LDXI in static (group 1) and dynamic (group 2) modes was compared to medical fluoroscopy (group 3), digital intraoral radiography (group 4), and CBCT scan (group 5) using a dental phantom.Results. The Mann-Whitney test showed no statistical significance(α=0.01)in dose exposure between groups 1 and 3 and 1 and 4 and timing exposure (seconds) between groups 1 and 5 and 2 and 3. Image resolution test showed group 1 > group 4 > group 2 > group 3 > group 5.Conclusions. The LDXI proved the concept for obtaining a high definition image resolution for static and dynamic radiography at lower or similar dose exposure and smaller pixel size, respectively, when compared to current imaging technologies. Lower mA at the X-ray source and high QE at the detector level principles with microlens could be applied to current imaging technologies to considerably reduce dose exposure without compromising image resolution in the near future.

In-Situ/Operando Synchrotron X-ray Imaging Techniques for Energy-Related Applications

2021 ◽  
pp. 223-247
Author(s):  
Lei Du ◽  
Nan Sun ◽  
Yajie Song ◽  
Hanwen An ◽  
Jian Liu
Keyword(s):  
Imaging Techniques ◽  
X Ray ◽  
X Ray Imaging

High-Speed X-Ray Imaging of Diesel Injector Needle Motion

2009 ◽  
Author(s):  
A. L. Kastengren ◽  
C. F. Powell ◽  
Z. Liu ◽  
K. Fezzaa ◽  
J. Wang
Keyword(s):  
High Speed ◽  
Three Dimensional ◽  
Linear Increase ◽  
Nozzle Geometry ◽  
X Ray ◽  
Needle Position ◽  
X Ray Imaging ◽  
Linear Oscillation ◽  
Degree Of Convergence

Phase-enhanced x-ray imaging has been used to examine the geometry and dynamics of four diesel injector nozzles. The technique uses a high-speed camera, which allows the dynamics of individual injection events to be observed in real time and compared. Moreover, data has been obtained for the nozzles from two different viewing angles, allowing for the full three-dimensional motions of the needle to be examined. This technique allows the needle motion to be determined in situ at the needle seat and requires no modifications to the injector hardware, unlike conventional techniques. Measurements of the nozzle geometry have allowed the average nozzle diameter, degree of convergence or divergence, and the degree of rounding at the nozzle inlet to be examined. Measurements of the needle lift have shown that the lift behavior of all four nozzles consists of a linear increase in needle lift with respect to time until the needle reaches full lift and a linear decrease as the needle closes. For all four nozzles, the needle position oscillates at full lift with a period of 170–180 μs. The full-lift position of the needle changes as the rail pressure increases, perhaps reflecting compression of the injector components. Significant lateral motions were seen in the two single-hole nozzles, with the needle motion perpendicular to the injector axis resembling a circular motion for one nozzle and linear oscillation for the other nozzle. The two VCO multihole nozzles show much less lateral motion, with no strong oscillations visible.

scholarly journals The Use of In Situ X-ray Imaging Methods in the Research and Development of Magnesium-Based Grain-Refined and Nanocomposite Materials

JOM ◽  
2016 ◽  
Vol 68 (12) ◽  
pp. 3042-3050 ◽  
Author(s):  
W. H. Sillekens ◽  
D. Casari ◽  
W. U. Mirihanage ◽  
S. Terzi ◽  
R. H. Mathiesen ◽  
...  
Keyword(s):  
Research And Development ◽  
Nanocomposite Materials ◽  
Imaging Methods ◽  
X Ray ◽  
X Ray Imaging
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