Results 91 to 100 of about 3,887,393 (242)

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

Advanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar, Dhanadeep Dutta, G. Bharat Reddy   +2 more
wiley   +1 more source

Mathematical forms of Planck’s thermal radiation law and photobiological biomass adaptations

Academia Biology
Solar photons with energies from 1.2 to 3 eV fuel Earth’s biosphere via excited-state photochemical reactions. The solar radiance spectrum is successfully modeled by Planck’s thermal radiation law, applied to a blackbody heated to ~5,800 K ...
Mariana Sendova, Isaac Moncada-Almendarez   +1 more
doaj   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 more
wiley   +1 more source

Emerging optical spectroscopy techniques for biomedical applications—A brief review of recent progress

, 2017
© 2018 Taylor & Francis Group, LLC. Optical measurement methods are widely employed in both industrial and medical fields for two reasons: (1) they are non-invasive and (2) they have a high resolution.
Song, Hyerin, Heesang Ahn, Kyujung Kim, Shin, Dong Myeong, Hyerin Song, Ahn, Heesang, Choi, Jong ryul, Dong-Myeong Shin, Jong-ryul Choi, Kim, Kyujung   +9 more
core   +1 more source

Studies and development of FBG based multi-point temperature sensor for vacuum chambers of synchrotron radiation source Indus-2

Results in Optics
This paper presents the development and deployment of a multi-point fiber Bragg grating (FBG) sensor system for precise temperature monitoring along the vacuum chamber walls of dipole and Pinger magnets in Indus-2, a synchrotron radiation source.
J. Kumar, S. Kumar, R. Mahakud, K.V.A.N.P.S. Kumar, B. Sindal, D.P. Yadav, P.K. Agrawal, M.K. Saxena, O. Prakash   +8 more
doaj   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Optical High-Capacity Satellite Downlinks via High-Altitude Platform Relays [PDF]

, 2007
Earth-observation (EO) satellite missions produce a large amount of data using high-resolution optical or radar sensors. During the last decades the amount of data has steadily increased due to improved sensor technologies with increased temporal ...
Florian Moll, Bischl, Hermann, Markus Knapek, Giggenbach, Dirk, Joachim Horwath, Horwath, Joachim, Courville, Nicolas, Knapek, Markus, Bernd Epple, Moll, Florian, Nicolas Courville, Hermann Bischl, Epple, Bernhard, Dirk Giggenbach   +13 more
core   +1 more source

Electronic structures and abnormal phonon behaviors of cobalt-modified Na0.5Bi0.5TiO3-6%BaTiO3 single crystals

AIP Advances, 2016
Optical properties, electronic structures, and structural variations of x wt% cobalt (Co) doped Na0.5Bi0.5TiO3-6%BaTiO3 (x=0%, 0.5%, 0.8%) single crystals have been studied by temperature-dependent optical ellipsometry and Raman spectra from 250 to 650 K.
T. Huang, P. Zhang, L. P. Xu, C. Chen, J. Z. Zhang, Z. G. Hu, H. S. Luo, J. H. Chu   +7 more
doaj   +1 more source

Density Measurement of Irradiated and Nonirradiated Zirconium Oxide by Ptychographic X‐Ray Computed Tomography (PXCT)

Advanced Engineering Materials, EarlyView.
Mass density governs the protective behavior of oxide layers on nuclear fuel cladding. Ptychographic X‐ray computed tomography measures zirconium oxide grown on Zircaloy‐4 under reactor and autoclave conditions, revealing nearly identical bulk densities of 5.1 ± 0.80 g cm−3.
Okan Yetik, Liliana I. Duarte, Malgorzata G. Makowska, Roland Brütsch, Andrej Bullemer, Ana Diaz, Mirko Holler, Andreas Menzel, Johannes Bertsch, Pavel Trtik   +9 more
wiley   +1 more source

Comparison of an InSb Detector and Upconversion Detector for Infrared Polarization Spectroscopy

, 2017
This paper compares the signal-to-noise ratio obtained using an InSb photodiode for infrared (IR) polarization spectroscopy to that obtained using an upconversion detector, and shows a factor 64 improvement by the change.
Zongshan Li, Hot, Dina, Pedersen, Rasmus L., Li, Zongshan, Dina Hot, Rasmus L. Pedersen, Pedersen, Rasmus L.,, Hot, Dina,, Li, Zongshan,, Lund University.   +9 more
core   +1 more source