Results 1 to 10 of about 140,708 (245)

Description of Dynamic Recrystallization by Means of An Advanced Statistical Multilevel Model: Grain Structure Evolution Analysis

open access: yesCrystals, 2022
Physical multilevel models of inelastic deformation that take into account the material structure evolution hold promise for the development of functional materials.
Peter Trusov   +2 more
doaj   +1 more source

Advanced Statistical Crystal Plasticity Model: Description of Copper Grain Structure Refinement during Equal Channel Angular Pressing

open access: yesMetals, 2023
The grain structure of metals changes significantly during severe plastic deformation (SPD), and grain refinement is the main process associated with SPD at low homologous temperatures.
Kirill Romanov   +2 more
doaj   +1 more source

Some Issues on Crystal Plasticity Models Formulation: Motion Decomposition and Constitutive Law Variants

open access: yesCrystals, 2021
In this paper, kinematic relations and constitutive laws in crystal plasticity are analyzed in the context of geometric nonlinearity description and fulfillment of thermodynamic requirements in the case of elastic deformation.
Peter Trusov   +2 more
doaj   +1 more source

Grain Structure Rearrangement by Means the Advanced Statistical Model Modified for Describing Dynamic Recrystallization

open access: yesMetals, 2023
The study of grain and defect structure evolution in materials subjected to thermomechanical processing is still an urgent problem because the state of a structure substantially determines the physical and mechanical macro properties of polycrystals and ...
Peter Trusov   +2 more
doaj   +1 more source

Toward a new conceptualization of resilience at work as a meta-construct?

open access: yesFrontiers in Psychology, 2023
Organizations of all kinds are faced with multiple demands for adaptation of increasing frequency and amplitude due to such factors as reorganizations, climate change, pandemics, and labor shortages.
Anaïs Galy   +3 more
doaj   +1 more source

Analysis and Design of High-Efficiency Modular Multilevel Resonant DC-DC Converter

open access: yesIEEE Open Journal of Power Electronics, 2022
This paper demonstrates a high-efficiency modular multilevel resonant DC-DC converter (MMRC) with zero-voltage switching (ZVS) capability. In order to minimize the conduction loss in the converter, optimizing the root-mean-square (RMS) current flowing ...
Yanchao Li   +4 more
doaj   +1 more source

Multilevel Laser Induced Continuum Structure

open access: yesEntropy, 2021
Laser-induced-continuum-structure (LICS) allows for coherent control techniques to be applied in a Raman type system with an intermediate continuum state. The standard LICS problem involves two bound states coupled to one or more continua. In this paper,
Kaloyan Zlatanov, Nikolay Vitanov
doaj   +1 more source

Modelling the Duration of the First Job Using Bayesian Accelerated Failure Time Models

open access: yesActa Universitatis Lodziensis. Folia Oeconomica, 2017
In this paper, the duration of the first job of young people aged 18–30 has been analyzed. The aim of the work is to find the distribution which best describes the investigated phenomenon.
Wioletta Grzenda
doaj   +1 more source

Symmetric and Asymmetric Configurations for a Multilevel Inverter Using Less Number of Power Switches [PDF]

open access: yesInternational Journal of Industrial Electronics, Control and Optimization, 2018
This paper proposes a multilevel inverter that produces many steps in output voltage using fewer power electronic switches. The configuration of the proposed inverter is modular and extendable.
Farzad Sedaghati, Naser Hashemipour
doaj   +1 more source

Single Phase T-Type Multilevel Inverters for Renewable Energy Systems, Topology, Modulation, and Control Techniques: A Review

open access: yesEnergies, 2022
Multilevel inverters (MLI) consist of a wide range of power converters. They have many designs and have been introduced with different circuit topologies such as neutral point clamped, diode clamped, cascaded H-bridges, and flying capacitors.
Mustafa F. Mohammed, Mohammed A. Qasim
doaj   +1 more source

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