Results 21 to 30 of about 23,148 (262)

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

open access: yesAdvanced 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   +2 more
wiley   +1 more source

Identifying substructure associations in the Milky Way halo using chemo-kinematic tagging

open access: yesAstronomy & Astrophysics
Context. The Milky Way halo has been built-up over cosmic time through the accretion and dissolution of star clusters and dwarf galaxies as well as through their complex interactions with the Galactic disc.
Youakim K., Lind K.
doaj   +1 more source

Rapid BAL Variability: Re-Emerging Absorption

open access: yesFrontiers in Astronomy and Space Sciences, 2017
We study BAL variations of SDSS J141955.28+522741.4 utilizing 32 epochs of spectroscopic observations from SDSS. We identify three individual BAL troughs for C iv and one BAL trough for Si iv.
Damla Erakuman   +2 more
doaj   +1 more source

A simplified approach to kinematics of stars in solar neighbourhood [PDF]

open access: yesSerbian Astronomical Journal, 2015
For a number of stars from the Solar neighbourhood the eccentricities of their galactocentric orbits are calculated by using a simplified procedure given by Ninković (2011).
Stojanović M.
doaj   +1 more source

Application of direct and inverse kinematics and dynamics in motion planning of manipulator links

open access: yesInternational Journal of Applied Mechanics and Engineering, 2023
For the synthesis of manipulators and robots, an accurate analysis of the movements of the individual links is essential. This thesis deals with motion planning of the effector of a multi-linked manipulator.
Ingrid Delyová   +5 more
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

open access: yesAdvanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara   +8 more
wiley   +1 more source

Modeling the kinematics and dynamics of compliant contact [PDF]

open access: yes2003 IEEE International Conference on Robotics and Automation (Cat. No.03CH37422), 2004
In this paper, we discuss the modeling of the kinematics and dynamics of compliant contact between bodies moving in Euclidean space. First, we derive the kinematic equations describing the motion of the contact point when two rigid bodies are rolling on each other.
Vincent Duindam, Stefano Stramigioli
openaire   +4 more sources

OntOMat: Toward Ontology‐Based Product and Process Design Engineering and Optimization Solutions Fueling Circular Value Chains

open access: yesAdvanced Engineering Materials, EarlyView.
The OntOMat ontology establishes a structured framework for polymer matrix fiber reinforced composite materials, integrating manufacturing processes, characterization methods, and multiscale design through the VDI/VDE 3682 formalized process description standard.
Nicolas Christ   +19 more
wiley   +1 more source

Gas Motion Mapping for Three Seyfert Galaxies

open access: yesOpen Astronomy, 2011
We report the preliminary results of a kinematical study of three Seyfert galaxies selected from a sample of nearby active galactic nuclei observed using 3D spectroscopy.
Smirnova A.   +3 more
doaj   +1 more source

Reconsideration of mass-distribution models [PDF]

open access: yesSerbian Astronomical Journal, 2014
The mass-distribution model proposed by Kuzmin and Veltmann (1973) is revisited. It is subdivided into two models which have a common case. Only one of them is subject of the present study.
Ninković S.
doaj   +1 more source

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