Results 81 to 90 of about 32,523 (343)

Tradeoff between compression ratio and decoding delay of distributed source coding for uplink transmissions in machine-type communication

open access: yesInternational Journal of Distributed Sensor Networks, 2018
Rapid growth of machine-type communications devices challenges the future network with a significant aggregated data traffic. Distributed source coding is a promising technique that compresses data sources and decreases required aggregated data ...
Wen Wang   +3 more
doaj   +1 more source

A fundamental study of prechamber combustion characteristics in a constant volume combustion chamber

open access: yesNihon Kikai Gakkai ronbunshu, 2020
The prechamber combustion characteristics were studied using a constant volume combustion chamber to improve the efficiency of cogeneration natural gas engines.
Seiya UENO   +5 more
doaj   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal   +2 more
wiley   +1 more source

Auto-ignition characteristics and kinetic modeling study of PODE3/n-heptane blends

open access: yesFuel Processing Technology
Polyoxymethylene dimethyl ethers (PODEn) are promising oxygenated additives for diesel engines due to their high cetane number and low soot emissions. However, the auto-ignition characteristics of PODE3 blended with diesel surrogate fuels like n-heptane ...
Yuwei Zhao   +6 more
doaj   +1 more source

Geometrical analysis, for rapid prototyping, of the compressor’s helical conic rotor model

open access: yesMATEC Web of Conferences, 2018
The conical rotary compressor represents a solution for gases compression, for relatively small flow, in conditions of a superior energetic efficiency.
Baroiu Nicuşor   +4 more
doaj   +1 more source

Powder Optimization Strategies for Binder Jetting Printing of BaTiO3 and Ba0,6Sr0,4TiO3 Ceramics

open access: yesAdvanced Engineering Materials, EarlyView.
Powder optimization is investigated to enable binder jetting of BaTiO3 and Ba0.6Sr0.4TiO3 ferroelectric ceramics. The antagonistic relationship between flowability and binder compatibility is addressed through binder impregnation of granulated powders and fumed silica addition to fine powders.
Fanny Pruvost   +4 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

Gas-phase autoignition of diesel/gasoline blends over wide temperature and pressure in heated shock tube and rapid compression machine

open access: yesCombustion and Flame, 2019
Diesel/gasoline blended fuel, also named as dieseline, has attracted worldwide interests in varied advanced engine combustion modes dominated by mixing time scale and chemical reaction time scale. However, the research on ignition properties and chemical
Sixu Wang   +7 more
semanticscholar   +1 more source

Short-Cut Method to Assess a Gross Available Energy in a Medium-Load Screw Friction Press

open access: yesMetals, 2018
The present study proposed a rapid method, based on a previous universal compression tests, to estimate the required load capacity to cold forge different specimen quantity in a screw press.
A.J. Sánchez Egea   +4 more
doaj   +1 more source

Field Report from Collaborative Research Center 1625: Heterogeneous Research Data Management Using Ontology Representations

open access: yesAdvanced Engineering Materials, EarlyView.
A unified research data management framework for heterogeneous materials data is presented. The system integrates multimodal datasets using ontologies and knowledge graphs, enabling interoperability and FAIR (findable, accessible, interoperable, reusable) data principles. By linking data across scales and workflows, it supports reproducible, Artifitial
Doaa Mohamed   +6 more
wiley   +1 more source

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