Results 91 to 100 of about 473,459 (366)

Laser Additive Manufacturing of Oxide‐Dispersion‐Strengthened Steels: A Simulation‐Based Comparison Between Powder Bed Fusion and Direct Energy Deposition

open access: yesAdvanced Engineering Materials, EarlyView.
Controlling the size and distribution of dispersoids is essential for optimizing the performance of oxide‐dispersion‐strengthened steels. This study focuses on nanoparticle dispersion and agglomeration during laser additive manufacturing of Fe20Cr alloy reinforced with ZrO 2 nanoparticles. Utilizing multiphysics phase‐field simulations and nanoparticle
Somnath Bharech   +6 more
wiley   +1 more source

Segmentation-free x-ray energy spectrum estimation for computed tomography

open access: yes, 2016
X-ray energy spectrum plays an essential role in imaging and related tasks. Due to the high photon flux of clinical CT scanners, most of the spectrum estimation methods are indirect and are usually suffered from various limitations. The recently proposed
Niu, Tianye, Zhang, Qiude, Zhao, Wei
core   +1 more source

In-situ Analysis of Laminated Composite Materials by X-ray Micro-Computed Tomography and Digital Volume Correlation [PDF]

open access: yes, 2013
The complex mechanical behaviour of composite materials, due to internal heterogeneity and multi-layered composition impose deeper studies. This paper presents an experimental investigation technique to perform volume kinematic measurements in composite ...
A Germaneau   +32 more
core   +2 more sources

High‐quality X‐ray computed tomography reconstruction using projected and interpolated images

open access: yesIET Image Processing, 2019
Recent advances in computation power have allowed computed tomography (CT) to utilise iterative reconstruction (IR) algorithms. The IR technique can handle noisy data and reconstructs optimal CT images from limited projected images.
D.M. Bappy, Insu Jeon
doaj   +1 more source

X‐Ray Computed Tomography Quantifies Primary Phases and Reveals Crack Morphology in High‐Cycle Fatigue of Aluminum Alloy EN AW‐2618A

open access: yesAdvanced Engineering Materials, EarlyView.
Primary phases and a fatigue crack are studied in a forged blank of an aluminum alloy using synchrotron and laboratory X‐ray computed tomography. To image the crack, the fatigue test is interrupted, and a static tensile load is applied to open the crack.
Jakob Schröder   +6 more
wiley   +1 more source

X-ray Diffraction Tomographic Imaging and Reconstruction [PDF]

open access: yes, 2011
Material discrimination based on conventional or dual energy X-ray computed tomography (CT) imaging can be ambiguous. X-ray diffraction imaging (XDI) can be used to construct diffraction profiles of objects, providing new molecular signature information ...
Castañón, David, Chen, Ke
core   +1 more source

Visualizing Fluid Flows With X-Rays [PDF]

open access: yes, 2007
There are several methods available to visualize fluid flows when one has optical access. However, when optical access is limited to near the boundaries or not available at all, alternative visualization methods are required.
Gray, Joseph   +3 more
core   +2 more sources

Assessment of the responses of soil pore properties to combined soil structure amendments using X-ray computed tomography

open access: yesScientific Reports, 2018
Soil amendments, such as straw mulch, organic fertilizers and superabsorbent polymer (SAP), are extensively applied to improve soil structure and porosity, and we reported the functional consequences of the individual application of these amendments in ...
Yonghui Yang   +6 more
semanticscholar   +1 more source

Additive Manufacturing of Highly Alloyed Aluminum–Lithium

open access: yesAdvanced Engineering Materials, EarlyView.
Al–Li alloys, promising for future lightweight constructions due to their low density and high stiffness, are limited to 9 at% lithium in commercial forms because of segregation issues. To overcome this traditional limitation, powder bed fusion with an ultrashort pulse laser is used.
Lisa Matthäus   +4 more
wiley   +1 more source

Salt crystallization dynamics in building rocks: a 4D study using laboratory X-ray micro-CT [PDF]

open access: yes, 2015
We employ laboratory X-ray micro-computed tomography (μCT) during climate-controlled salt weathering experiments to acquire data on the kinetics of drying and salt precipitation and the distribution of crystals within the pore space of Mšené sandstone ...
Boone, Marijn   +9 more
core  

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