Results 91 to 100 of about 125,106 (323)

Acousto-Ultrasonic analysis of failure in ceramic matrix composite tensile specimens [PDF]

open access: yes
Three types of acousto-ultrasonic (AU) measurements, stress-wave factor (SWF), lowest antisymmetric plate mode group velocity (VS), and lowest symmetric plate mode group velocity (VL), were performed on specimens before and after tensile failure.
Chulya, Abhisak, Kautz, Harold E.
core   +1 more source

Thermooxidative stability of PMMA composites [PDF]

open access: yes, 2012
Tato práce se zabývá studiem termooxidační stability kompozitů polymethylmethakrylátu (PMMA) plněného mikro a nanočásticemi siliky. V připravených vzorcích byly použity různé objemové zlomky a různé velikosti částic siliky.
Čechová, Eva
core  

Modeling complex crack paths in ceramic laminates: A novel variational framework combining the phase field method of fracture and the cohesive zone model [PDF]

open access: yes, 2018
Artículo Open Access en el sitio web el editor. Pago por publicar en abierto.The competition between crack penetration in the layers and cohesive delamination along interfaces is herein investigated in reference to laminate ceramics, with special ...
Carollo, Valerio   +2 more
core   +2 more sources

Dynamic Testing of Cold Gas Sprayed Bipolar Plates–Porous Transport Layer Coating System in Proton Exchange Membrane Water Electrolysis

open access: yesAdvanced Engineering Materials, EarlyView.
Through direct application of porous transport layer (PTL) on the bipolar plate (BPP) with thermal spraying, the interfacial contact resistance is improved. With the cold gas sprayed BPP–PTL coating system, a proton exchange membrane water electrolysis cell with a cell voltage of Ucell = 1.9 V can be operated up to i = 2.5 A/cm2 in a dynamic mode ...
Kirsten Bobzin   +5 more
wiley   +1 more source

Productivity‐Driven Optimization of Laser Powder Bed Fusion Parameters for IN718 Superalloy: Process Control, Microstructure, and Mechanical Properties

open access: yesAdvanced Engineering Materials, EarlyView.
This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat   +7 more
wiley   +1 more source

Effect of Pb-16Li long term exposure on mechanical properties of ceramic materials

open access: yesNuclear Materials and Energy
The Dual Coolant Lithium Lead (DCLL) Breeding Blanket (BB) concept is based on the use of liquid metal Pb–16Li. In the current design of the DCLL BB, Pb-16Li circuit is enclosed inside a box made of ceramic material.
Roman Petráš   +5 more
doaj   +1 more source

Effect of fiber reinforcements on thermo-oxidative stability and mechanical properties of polymer matrix composites [PDF]

open access: yes
A number of studies have investigated the thermo-oxidative behavior of polymer matrix composites. Two significant observations have been made from these research efforts: (1) fiber reinforcement has a significant effect on composite thermal stability ...
Bowles, Kenneth J.
core   +1 more source

High-temperature deep-level transient spectroscopy system for defect studies in wide-bandgap semiconductors

open access: yes, 2019
Full investigation of deep defect states and impurities in wide-bandgap materials by employing commercial transient capacitance spectroscopy is a challenge, demanding very high temperatures. Therefore, a high-temperature deep-level transient spectroscopy
A. Hallén   +8 more
core   +1 more source

Corrosion and Process Analysis of a Preoxidized MgO Recyclate‐Based Cermet Anode in Laboratory‐Scale Na‐Cryolite Molten Salt Electrolysis of Aluminum at 1000°C

open access: yesAdvanced Engineering Materials, EarlyView.
EDX elemental map of the pre‐oxidized MgO–steel cermet anode cross section after electrolysis. The development of inert anodes for aluminum electrolysis remains challenging due to the high corrosivity of cryolite‐based melts at 950°C–1000°C. This study investigates the corrosion and process behavior of a carbon‐free MgO–steel cermet anode derived from ...
Alexander Adamczyk   +7 more
wiley   +1 more source

Probing degradation of Cobalt-free LiNi0.5Mn1.5O4 ceramic cathode in lithium-ion batteries

open access: yesnpj Materials Degradation
High-voltage LiNi0.5Mn1.5O4 (LNMO) cathode is a promising option for transition to sustainable and cost-effective cobalt-free cathodes, and ceramic cathodes can substantially increase energy density by enabling higher active material loading.
Chengyu Li   +5 more
doaj   +1 more source

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