Results 31 to 40 of about 699,236 (327)
Study on Calculation Method of Transient Temperature of IGBT in Metro Vehicles
机车电传动, 2021 The physical structure of IGBT module package was introduced, and the main mechanism of chip failure caused by heat shock was analyzed. The main transfer path of chip heat loss was analyzed, the transient heat-transfer model of each link of heat transfer
Wenjie ZENG +5 more
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Means for phase locking the outputs of a surface emitting laser diode array [PDF]
, 1987 An array of diode lasers, either a two-dimensional array of surface emitting lasers, or a linear array of stripe lasers, is phase locked by a diode laser through a hologram which focuses the output of the diode laser into a set of distinct, spatially ...
Lesh, James R.
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Advanced Engineering Materials, EarlyView.This study investigates laser shock peening for enhancing fatigue performance of riveted aerospace aluminum joints. A comparative approach with cold expansion combines fatigue testing and synchrotron X‐ray methods. Integrating mechanical testing with residual stress and strain characterization provides insights into how different treatments affect the ...
Ogün Baris Tapar +6 more
wiley +1 more source
Recent research progress of SiC superjunction devices
机车电传动, 2023 Because of its excellent physical and chemical properties, silicon carbide (SiC) is suitable for manufacturing semiconductor devices working under high temperature and high power.
ZHANG Jinping +4 more
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Spektra: Jurnal Fisika dan Aplikasinya, 2017 Abstrak Penelitian ini bertujuan untuk memanfaatkan probabilitas distribusi Gaussian untuk membantu menentukan kualitas rangkaian penyearah gelombang penuh. Sebagai sampel digunakan dioda IN4002 dan IN4007 yang dihubungkan secara seri dengan tahanan 1.
Haris Rosdianto, Moh. Toifur
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Diode laser in the management of foliate papillitis – Two case reports
Journal of Pharmacy and Bioallied Sciences, 2023 The human tongue consists of various kinds of papillae which form its characteristic morphology. Among these papillae, the foliate papillae may become enlarged and inflamed causing a condition called as foliate papillitis.
Jagadish Ebenezer +4 more
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Advanced Engineering Materials, EarlyView.Al‐Cu intermetallic compounds (IMCs) have a significant influence on the properties of Al‐Cu bimetallic interfaces formed in compound casting. This article provides a deeper understanding of microstructure, crystallography, thermal properties, hardness, and corrosion response of Al‐Cu IMCs with the goal of facilitating the optimization of the ...
Alireza Nazarahari +7 more
wiley +1 more source
Thienothiophene Scaffolds as Building Blocks for (Opto)Electronics
Organics, 2022 Thieno[3,2-b]thiophene and isomeric thieno[2,3-b]thiophene represent fused, bicyclic and electron rich heterocycles. These small planar organic compounds belong to the remarkable family of annulated building blocks for various organic materials.
Jan Podlesný, Filip Bureš
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Advanced Engineering Materials, EarlyView.Laser wire directed energy deposition process was leveraged to fabricate large scale NiTi alloy wall. Evaluation of build‐height‐dependent tribo‐mechanical properties revealed significant differences in location specific sample characteristics. The middle region achieved optimal performance (superior wear resistance, balanced strength‐ductility ...
Hyunsuk Choi +5 more
wiley +1 more source
THEORETICAL CONSIDERATIONS REGARDING THE USE OF SEMICONDUCTOR DIODES [PDF]
Fiabilitate şi Durabilitate, 2022 The paper presents theoretical aspects regarding the simplest electronic component, the diode and the way in which the function of transforming the alternating current into direct current, allows the use of this electronic device in the field of IT ...
Rodica Maria NEGREA
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