Results 61 to 70 of about 2,878,811 (302)

Beam-Doppler Unitary ESPRIT for Multitarget DOA Estimation

International Journal of Antennas and Propagation, 2018
High-resolution direction of arrival (DOA) estimation is a critical issue for mainbeam multitarget tracking in ground-based or airborne early warning radar system. A beam-Doppler unitary ESPRIT (BD-UESPRIT) algorithm is proposed to deal with this problem.
Cai Wen, Yan Zhou, Mingliang Tao, Jianxin Wu, Jinye Peng   +4 more
doaj   +1 more source

Correction to “Micromagnetic models of pseudo-single domain grains of magnetite near the Verwey Transition” [PDF]

, 1999
Domain structures of small pseudo-single domain (PSD) magnetite near the Verwey transition (Tυ) at ≈120 K were modeled using an unconstrained three-dimensional micromagnetic algorithm.
A. R. Muxworthy, W. Williams, Muxworthy, A. R., Williams, Wyn; id_orcid   +3 more
core   +1 more source

Microstructure Modification of Additively Manufactured Mo–9Si–8B by Annealing and Its Effects on High‐Temperature Mechanical Properties

Advanced Engineering Materials, EarlyView.
Postbuild annealing systematically modifies the phase fractions and morphology of EB‐PBF processed Mo–9Si–8B. Quantitative microstructure–property correlations reveal how controlled phase evolution enhances high‐temperature compressive strength and creep resistance.
Christopher Schmidt, Yong Chen, Georg Hasemann, Benjamin Wahlmann, Carolin Körner, Manja Krüger   +5 more
wiley   +1 more source

The change of the domain wall shape under the ion beam irradiation in lithium niobate

Journal of Advanced Dielectrics
In this paper, we present the study of the shape change on the polar surface and in the bulk of the walls of lamellar domains as a result of local switching by focused ion beam. Periodical lamellar domain structures (PDS) are created alternatively by two
Elena Pashnina, Alla Slautina, Andrey Akhmatkhanov, Maria Chuvakova, Vladimir Shur   +4 more
doaj   +1 more source

Bending and free vibration of functionally graded beams using various higher-order shear deformation beam theories [PDF]

, 2012
In this paper, various higher-order shear deformation beam theories for bending and free vibration of functionally graded beams are developed. The developed theories account for higher-order variation of transverse shear strain through the depth of the ...
Thai, Huu-Tai, Vo, Thuc
core   +1 more source

Investigating the Effect of Inclination Angle and the Influence of Scan Parameters on the Appearance and Thermal and Mechanical Properties of Filigree Tension Rods of LPBF‐Manufactured NiTi Shape‐Memory Alloys

Advanced Engineering Materials, EarlyView.
This article investigates the dependence of the properties on the manufacturing orientation in the form of the inclination angle to the build plate of LPBF‐fabricated NiTi rods with a diameter of 150–220 µm. Metallographic, chemical, thermal, and mechanical characterization show behavior under identical manufacturing conditions that ranges from ...
Sandra Herzig, Michael Werner, Christian Rotsch   +2 more
wiley   +1 more source

Electric field tunable diffraction optical element based on strontium–barium niobate single crystals

Journal of Advanced Dielectrics
In this paper, we present the electric field controllable diffractive optical elements in strontium–barium niobate single crystals with stable tailored spiral-shaped domain structure and demonstrate the generation of optical beam with orbital angular ...
Vera Shikhova, Andrey Akhmatkhanov, Maria Chuvakova, Ludmila Ivleva, Vladimir Pavelyev, Maxim Nebogatikov, Vladimir Shur   +6 more
doaj   +1 more source

Modeling of Passive Constrained Layer Damping as Applied to a Gun Tube

Shock and Vibration, 2001
We study the damping effects of a cantilever beam system consisting of a gun tube wrapped with a constrained viscoelastic polymer on terrain induced vibrations.
Margaret Z. Kiehl, C.P.T. Wayne Jerzak
doaj   +1 more source

Numerical examples: (a) MBB beam–only right half (a2) of the full design domain (a1) is considered due to symmetry, (b) Cantilever beam, and (c) L bracket.

, 2015
Numerical examples: (a) MBB beam–only right half (a2) of the full design domain (a1) is considered due to symmetry, (b) Cantilever beam, and (c) L bracket.
Emre Biyikli (838340), Albert C. To (838341)   +1 more
core   +1 more source

Controlling Grain Growth in Powder Bed Fusion of Yttria‐Stabilized Zirconia Using Femtosecond Lasers: Challenges and Methodological Insights

Advanced Engineering Materials, EarlyView.
Binder‐free laser powder bed fusion of 8YSZ with a femtosecond laser is used to map process windows linking scan strategy, heat accumulation, and grain growth. Time‐resolved thermography and simulations reveal thermal regimes that enable continuous, vitrified, and fine‐grained 8YSZ surface layers without absorptive additives and demonstrate ...
Markus Kühn, Sarah Kaden, Andrea Barz, Daniel Störzner, Jens Bliedtner, Andrés Fabián Lasagni   +5 more
wiley   +1 more source