Results 71 to 80 of about 376,488 (285)

Dark-field chest x-ray imaging: first experience in patients with alpha1-antitrypsin deficiency

European Radiology Experimental, 2022
Background Spirometry and conventional chest x-ray have limitations in investigating early emphysema, while computed tomography, the reference imaging method in this context, is not part of routine patient care due to its higher radiation dose.
Gregor S. Zimmermann, Alexander A. Fingerle, Bernhard Renger, Karl-Ludwig Laugwitz, Hubert Hautmann, Andreas Sauter, Felix Meurer, Florian Tilman Gassert, Jannis Bodden, Christina Müller-Leisse, Martin Renz, Ernst J. Rummeny, Marcus R. Makowski, Konstantin Willer, Wolfgang Noichl, Fabio De Marco, Manuela Frank, Theresa Urban, Rafael C. Schick, Julia Herzen, Thomas Koehler, Bernhard Haller, Daniela Pfeiffer, Franz Pfeiffer   +23 more
doaj   +1 more source

Calculation of Optimal Geometrical Magnification and Spatial Resolution of Betatron Tomograph [PDF]

, 2017
One of the perspective directions of development of non-destructive testing is the method of computed tomography. Computed tomography really enhances the ability of X-ray inspection, from thin and simple to thick and complex parts. There are many factors
Chakhlov, Sergey Vladimirovich, Trinh, V. B., Zhong, Y.   +2 more
core   +1 more source

The Impact of High‐Productivity Processing on the Fatigue Failure of an Additive Manufactured Superalloy HAYNES 282

Advanced Engineering Materials, EarlyView.
The low cycle fatigue life of additive manufactured HAYNES® 282® superalloy was investigated for conventional and high‐productivity processing: samples of the former lasted 1400–1700 cycles, while samples of the latter failed at ~ 1200 cycles, at 760 °C and 1% strain.
Abdul Shaafi Shaikh, Ahmed Fardan, Tatiana Mishurova, Eduard Hryha   +3 more
wiley   +1 more source

Using X-ray computed tomography to study paving materials [PDF]

, 2007
X-ray computed tomography, a non-destructive threedimensional imaging tool, has been very helpful in medical diagnosis since the first commercial tomographs were constructed in 1973.
Ceylan, Halil, Ceylan, Halil, Gopalakrishnan, Kasthurirangan, Inanc, F.   +3 more
core   +3 more sources

A Workflow to Accelerate Microstructure‐Sensitive Fatigue Life Predictions

Advanced Engineering Materials, EarlyView.
This study introduces a workflow to accelerate predictions of microstructure‐sensitive fatigue life. Results from frameworks with varying levels of simplification are benchmarked against published reference results. The analysis reveals a trade‐off between accuracy and model complexity, offering researchers a practical guide for selecting the optimal ...
Luca Loiodice, Krzysztof S. Stopka, Michael D. Sangid   +2 more
wiley   +1 more source

Multimodal Mechanical Testing of Additively Manufactured Ti6Al4V Lattice Structures: Compression, Bending, and Fatigue

Advanced Engineering Materials, EarlyView.
In this experimental study, the mechanical properties of additively manufactured Ti‐6Al‐4V lattice structures of different geometries are characterized using compression, four point bending and fatigue testing. While TPMS designs show superior fatigue resistance, SplitP and Honeycomb lattice structures combine high stiffness and strength. The resulting
Klaus Burkart, Jonas Schmidt, Anastasiya Toenjes, Johanna Eisenträger   +3 more
wiley   +1 more source

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

, 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, Boone, Matthieu, Cnudde, Veerle, De Kock, Tim, De Miranda, Stefano, Derluyn, Hannelore, Desarnaud, Julie, Molari, Lisa, Peetermans, Steven, Shahidzadeh, Noushine   +9 more
core  

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

Advanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti, Finn‐Lennard Janthur, Selina Raumel, Sascha Jan Zimmermann, Sarah Seffer, René Gustus, Sebastian Herbst, Marc C. Wurz, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Florian Nürnberger   +11 more
wiley   +1 more source

Exploring the application of dual‐energy CT to discriminate sediment facies in a varved sequence

The Depositional Record
Dual‐energy X‐ray computed tomography consists of imaging objects using two incident X‐ray beams of different energy to distinguish the different compounds within a sample based on their density (electron density, ρe) and elemental composition (effective
M. Martini, P. Francus, L. Di Schiavi Trotta, P. Letellier, M. Des Roches, P. Després   +5 more
doaj   +1 more source

Computed tomography-osteoabsorptiometry for assessing the density distribution of subchondral bone as a measure of long-term mechanical adaptation in individual joints [PDF]

, 1989
To estimate subchondral mineralisation patterns which represent the long-term loading history of individual joints, a method has been developed employing computed tomography (CT) which permits repeated examination of living joints.
A Schleicher, B Kummer, B Kummer, Berthold Wimmer, E Amtmann, Erik Schulte, F Pauwels, GU Rao, H Konermann, H Molzberger, HE Meema, HK Genant, J Adams, J Noble, J-J Knief, K Kouris, Magdalena M�ller-Gerbl, N Möllers, Norbert Hodapp, P Maquet, P Steiger, Reinhard Putz, SB Murphy, WA Kalender   +23 more
core   +1 more source