Results 1 to 10 of about 3,166,293 (279)

Backward-Wave Oscillation Suppression in Folded Waveguide Traveling-Wave Tube With Metamaterial Absorber

open access: yesIEEE Access, 2023
A D-band folded waveguide (FWG) traveling-wave tube (TWT) with metamaterial absorber (MMA) is proposed, where the MMA is designed to suppress the backward oscillation in this FWG-TWT. The MMA consists of single splitter rings (SRs) with silica layer that
Yang Xie   +5 more
doaj   +1 more source

An Immune Algorithm based Reliability Optimization Method of Circuit Board

open access: yesJournal of Harbin University of Science and Technology, 2023
To improve the efficiency of solving the reliability design optimization model of circuit board based on physics of failure. The failure modes and mechanism of circuit board and components are analyzed, and the reliability optimization models of circuit ...
XIA Quan, REN Yi, SUN Bo, WU Zeyu
doaj   +1 more source

Vibration reduction on circular saw blades with vibroacoustic metamaterials [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 2023
The presented work focuses on the experimental investigation of a vibroacoustic metamaterial integrated into a spinning circular saw blade. Vibroacoustic metamaterials are a novel technology for broadband vibration reduction. Built from an array of local
Sebastian Rieß   +2 more
doaj   +1 more source

Fault Injection in Actuator Models for Testing of Automated Driving Functions

open access: yesVehicles, 2023
In this work, a simulation framework for virtual testing of autonomous driving functions under the influence of a fault occurring in a component is presented.
Hendrik Holzmann   +5 more
doaj   +1 more source

Evaluation of fatigue strength criteria for thick-walled nodular cast iron components from EN-GJS-400 under multiaxial load [PDF]

open access: yesMATEC Web of Conferences, 2019
This paper discusses the quality of common methods for estimating the fatigue strength of EN-GJS-400-18-LT specimens under multiaxial stress. This is particularly important for the lightweight design of wind turbines.
Fass Markus   +2 more
doaj   +1 more source

Numerical Approach to Optimize the Dynamic Behaviour of Structures Considering Structural Durability

open access: yesVibration, 2023
In the design of lightweight structures, both the dynamics and durability must be taken into account. In this paper, a methodology for the combined optimization of structural dynamics, lightweight design, and lifetime with discrete vibration engineering ...
William Kaal   +3 more
doaj   +1 more source

Skill Vehicle Routing Problem With Time Windows Considering Dynamic Service Times and Time-Skill-Dependent Costs

open access: yesIEEE Access, 2019
Service processes in modern logistic systems tend to be highly specialized and intellectualized. However, some casual and unexpected behavior may occur, causing specific dynamic interactions among their many constituents.
Xiaoyuan Yan   +5 more
doaj   +1 more source

Modeling the Capacitated Multi-Level Lot-Sizing Problem under Time-Varying Environments and a Fix-and-Optimize Solution Approach

open access: yesEntropy, 2019
In this study, we investigated the time-varying capacitated lot-sizing problem under a fast-changing production environment, where production factors such as the setup costs, inventory-holding costs, production capacities, or even material prices may be ...
Meng You   +5 more
doaj   +1 more source

A Joint Location–Allocation–Inventory Spare Part Optimization Model for Base-Level Support System with Uncertain Demands

open access: yesAxioms, 2023
This paper copes with a joint Location-Allocation-Inventory problem in a three-echelon base-level spare part support system with epistemic uncertainty in uncertain demands of bases.
Peixuan Li   +3 more
doaj   +1 more source

Sensitivity Analysis for a Scenario-Based Reliability Prediction Model [PDF]

open access: yes, 2005
As a popular means for capturing behavioural requirements, scenariosshow how components interact to provide system-level functionality.If component reliability information is available, scenarioscan be used to perform early system reliability assessment.
Rodrigues, G, Rosenblum, D, Uchitel, S
core   +1 more source

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