Results 81 to 90 of about 115,275 (300)
Dynamic atomic-scale electron avalanche breakdown in solid dielectrics
Nature CommunicationsElectron avalanche breakdown plays a pivotal role in determining the efficiency and reliability of semiconductors and insulators in micro-nanoelectronics and power systems.
Jian Wang +7 more
doaj +1 more source
High Voltage, 2019 Insulation oil is an important dielectric in power devices, and many studies on mixed insulation oil have been conducted in recent years to improve the performance of insulation oils.
Dawei Feng +5 more
doaj +1 more source
Multimodal Data‐Driven Microstructure Characterization
Advanced Engineering Materials, EarlyView.A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang +4 more
wiley +1 more source
, 2011 Chemically crosslinked polyethylene (XLPE) has been used as electrical insulation for power cables since the 1970s due to its favourable combination of electrical and mechanical properties.
Green, C.D. +5 more
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Thickness-dependence of the breakdown strength: analysis of the dielectric and mechanical failure
, 2014 The breakdown strength as well as the mechanical strength of ceramic materials decreases with increasing volume. The volume-effect of the mechanical strength can be explained by the Weibull theory. For the breakdown strength the same explanation has been
Jelitto, Hans +5 more
core +1 more source
Microstructure Evolution of a VMnFeCoNi High‐Entropy Alloy After Synthesis, Swaging, and Annealing
Advanced Engineering Materials, EarlyView.The synthesis and processing (rotary swaging and annealing) of the novel VMnFeCoNi alloy is investigated, alongside the estimation of the grain size effect on hardness. Analysis of a wide grain size range of recrystallized microstructures (12–210 µm) reveals a low annealing twin density.
Aditya Srinivasan Tirunilai +6 more
wiley +1 more source
Space charge and its impact on DC breakdown of polymeric materials
, 2013 The presence of space charge will lead to distortion of electric field distribution within the dielectric material, resulting electric field enhancement in certain region of the dielectric. The electric field enhancement could cause material degradation,
Chen, George
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Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys
Advanced Engineering Materials, EarlyView.Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak +3 more
wiley +1 more source
Area and volume effects on breakdown strength in liquid nitrogen [PDF]
, 1995 We measured dc and ac breakdown voltages in liquid nitrogen (LN_2) with a sphere-to-plane electrode configuration. Experimental results revealed that the breakdown voltage in LN_2 did not increase monotonously but partially decreased as the sphere ...
Okubo, H. +4 more
core +1 more source
St. Petersburg Polytechnical University Journal: Physics and MathematicsAn equation expressing the dependence of the breakdown field strength of polymer dielectrics on ambient temperature has been derived based on the hypothesis of an analogy between the physical phenomenon of breakdown and the mathematical cusp catastrophe.
Kiselevich Valentin
doaj +1 more source