Results 61 to 70 of about 5,564 (299)

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

Advanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak, Olha Zvirko, Rostyslav Leshchak, Hryhoriy Nykyforchyn   +3 more
wiley   +1 more source

Monitoring monthly surface water dynamics of Dongting Lake using Sentinel-1 data at 10 m [PDF]

PeerJ, 2018
High temporal resolution water distribution maps are essential for surface water monitoring because surface water exhibits significant inner-annual variation. Therefore, high-frequency remote sensing data are needed for surface water mapping.
Liwei Xing, Xinming Tang, Huabin Wang, Wenfeng Fan, Guanghui Wang   +4 more
doaj   +2 more sources

Uniqueness for the inverse backscattering problem for angularly controlled potentials

, 2014
We consider the problem of recovering a smooth, compactly supported potential on ℝ3 from its backscattering data.We show that if two such potentials have the same backscattering data and the difference of the two potentials has controlled angular ...
Rakesh, Uhlmann, Gunther
core   +1 more source

Fatigue Crack Initiation and Growth in Nanocrystalline Ni at Multiple Length‐Scales

Advanced Engineering Materials, EarlyView.
Overview of miniaturized in situ SEM fatigue setup and resultant fatigue crack growth data for nanocrystalline Ni. The presented study focuses on the analysis of fatigue crack growth rate (FCGR) in focused ion beam‐notched microcantilevers prepared from nanocrystalline (NC) Ni as a model material.
Igor Moravcik, Alexander Jelinek, Markus Alfreider, Jutta Luksch, Anton Hohenwarter, Florian Schaefer, Christian Motz, Daniel Kiener   +7 more
wiley   +1 more source

Backscattering en microanillos de silicio [PDF]

, 2013
[ES] En este trabajo presentamos un técnica experimental para caracterizar el backscattering en microanillos resonantes de silicio, junto con un modelo analítico capaz de reproducir los resultados experimentales.
Ballesteros García, Guillem
core  

Creep‐Induced Microstructural Evolution in an A2‐B2 Superalloy

Advanced Engineering Materials, EarlyView.
A 27.3Ta‐27.3Mo‐27.3Ti‐8Cr‐10Al (at.%) refractory high‐entropy alloy with precipitation‐strengthened A2‐B2 microstructure was studied by creep tests at 1030°C, which demonstrate a transition in deformation mechanisms in the range of 100–150 MPa applied stress. This is associated with changes in dislocation–precipitate interactions. Relevant deformation
Liu Yang, Aparajita Pramanik, Sandipan Sen, Shubhashis Dixit, Marcel Muench, R. J. Vikram, Daniel Schliephake, Yolita M. Eggeler, Ankur Chauhan, Martin Heilmaier, Alexander Kauffmann   +10 more
wiley   +1 more source

Spectral backscattering properties of marine phytoplankton cultures

, 2010
The backscattering properties of marine phytoplankton, which are assumed to vary widely with differences in size, shape, morphology and internal structure, have been directly measured in the laboratory on a very limited basis.
Lee Karp-Boss, Whitmire, Amanda L., Amanda L. Whitmire, Cowles, Timothy J., W. Scott Pegau, Scott Pegau, W., Boss, Emmanuel, Karp-Boss, Lee, Emmanuel Boss, Timothy J. Cowles   +9 more
core   +1 more source

Enhanced Strength and Corrosion Resistance of Ti‐13Nb‐12Ta‐10Zr‐4Sn Alloy by Aging Treatment

Advanced Engineering Materials, EarlyView.
This work systematically investigates the effect of aging treatment on mechanical properties and corrosion behavior of vacuum arc‐melted Ti‐13Nb‐12Ta‐10Zr‐4Sn alloy. Owing to the increased α″ martensite, strength and corrosion resistance were significantly enhanced by aging treatment.
Yuhua Li, Rong Zhao, Qian Zhang, Haojie Wang, Yujing Liu, Lai‐Chang Zhang   +5 more
wiley   +1 more source

Characterization of atherosclerosis plaques by measuring both backscattering and attenuation coefficients in optical coherence tomography.

, 2008
peer reviewedIntravascular optical coherence tomography (OCT) has been proven a powerful diagnostic tool for cardiovascular diseases. However, the optical mechanism for the qualitative observations are still absent. We address the fundamental issues that
Schmitt, Joseph M, Virmani, Renu, Xu, Chenyang, Carlier, Stéphane   +3 more
core   +1 more source

Volumetric Estimation of the Backscatter Coefficient With a Matrix Probe

IEEE Open Journal of Ultrasonics, Ferroelectrics, and Frequency Control
Evaluation of the backscatter coefficient (BSC) from soft tissues has many applications for medical diagnosis. However, electronic noise and spatial variations often affect BSC estimation, requiring spatial averaging inside a region of interest (ROI) that reduces spatial resolution compared to the B-mode images.
Mazellier, Valentin, Varray, François, Muleki-Seya, Pauline   +2 more
openaire   +2 more sources