Results 31 to 40 of about 1,576 (295)
Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading
Advanced Engineering Materials, EarlyView.The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley +1 more source
Applied SciencesHypergolic propellants have long been central to spacecraft propulsion because of their storability, reliability and rapid ignition. Conventional systems such as hydrazine derivatives paired with oxidisers like nitrogen tetroxide deliver ignition delays ...
Prakhar Jindal, Jyoti Botchu Vara Siva
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Advanced Engineering Materials, EarlyView.A two‐dimensional multiscale finite element analysis framework was established for the first‐generation MoSiBTiC alloy, and the mechanical and fracture‐related parameters of the constituent phases were calibrated through experiments and simulations. The framework provides a basis for analyzing crack propagation behavior in its complex microstructure ...
Junfeng Du +4 more
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Studies on the flame propagation characteristic and thermal hazard of the premixed N2O/fuel mixtures
Defence Technology, 2020 An experimental study was carried out to investigate the flame propagation and thermal hazard of the premixed N2O/fuel mixtures, including NH3, C3H8 and C2H4.
Yu-yan Li +5 more
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Testing of the N2O/HDPE Vortex Flow Pancake Hybrid Rocket Engine with Augmented Spark Igniter
Aerospace, 2023 The paper is part of the research aimed at determining if the vortex flow pancake (VFP) hybrid rocket engine is feasible as green in-space chemical propulsion.
Tomasz Palacz, Jacek Cieślik
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Fatigue Crack Initiation and Growth in Nanocrystalline Ni at Multiple Length‐Scales
Advanced Engineering Materials, EarlyView.Overview of miniaturized in situ SEM fatigue setup and resultant fatigue crack growth data for nanocrystalline Ni. The presented study focuses on the analysis of fatigue crack growth rate (FCGR) in focused ion beam‐notched microcantilevers prepared from nanocrystalline (NC) Ni as a model material.
Igor Moravcik +7 more
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AerospaceIn the last three decades, significant progress has been made to find, develop, test, and qualify advanced green monopropellants which have the potential to replace hydrazine in satellite propulsion to a large extent due to their lower health risks ...
Helmut K. Ciezki
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Green propellants based on cryogenic solids and the state of the art of CSPS using solid H2O2
, 2022 Cryogenic Solid Propellants (CSP) are the propellants of choice when it comes to combining the advantages of solid and liquid propellants. CSP based solid rocket motors are as simple and as reliable as conventional solid monopropellant rocket motors ...
Eisenreich, N. +3 more
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Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying
Advanced 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
Characterization of New Lead-free Ballistic Modifiers and Phthalate-free Plasticizers in Propellants
Journal of Aerospace Technology and Management, 2020 This paper describes the synthesis and characterization of a copper-based ballistic modifier, copper subsalicylate (monobasic copper salicylate), and its performance in green-type propellants.
Rosane Macchiarulo Jorge +1 more
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