Results 71 to 80 of about 34,421 (359)
Advanced Materials, EarlyView.Ball‐milling Cu‐based metallic glasses with ceria creates a unique nanostructure where metallic glass particles are wrapped by CeO2 nanoparticles. The intimate integration triggers copper state reorganization during reaction and aging, boosting CO oxidation and COPrOx activity.
Maahin Mirzay‐Shahim +17 more
wiley +1 more source
Model Based Active Slosh Damping Experiment
CoRR, 2018 ESA GNC 2017: 10th International ESA Conference on Guidance, Navigation and Control Systems, Salzburg, Austria, 29.May - 2 June ...
Christina Jetzschmann +2 more
openaire +2 more sources
PASSIVE DAMPING OF SPACECRAFT SANDWICH PANELS
, 2007 For reusable and expendable launch vehicles as well as for other spacecraft structural vibration loads are safety critical design drivers impacting mass and lifetime. Here, the improvement of reliability and safety, the reduction of mass, the extension
Romberg, Oliver +6 more
core
Intelligent Acousto‐Electrical Metamaterials (IAM) for Sound Source Detection
Advanced Materials, EarlyView.Our proposed metamaterial concept enables sound source detection using a single material, in contrast to conventional arrays that require dozens or even hundreds of transducers. We show that the coupled acoustic–vibrational–electrical responses in piezoelectric metamaterials give rise to topology‐governed charge transport, producing distinct voltage ...
Victor Couëdel +7 more
wiley +1 more source
Ship roll damping via direct inverse neural network control system
Alexandria Engineering Journal, 2018 Undesired roll motions of surface vessels under sea way have negative influence on passengers, crew members, equipment and cargo. Damping roll motions is a complex problem due to unpredictable and irregular nature of marine environmental disturbances ...
Taher Awad +2 more
doaj +1 more source
Energy harvesting using semi-active nonlinear control
, 2013 This paper presents the application of semi-active control for power harvesting using an electromechanical energy harvester. Two semi-active control strategies are proposed in the form of a time-periodic damper and a nonlinear cubic damper.
Ghandchi Tehrani, M. +6 more
core
Vibration analysis of stylus instrument for random surface measurement [PDF]
, 2010 This paper presents dynamic modeling and vibration analysis methodologies for investigating surface profile fidelity in stylus instruments, using a novel dynamic model that takes account of Hertzian contact stiffness between the stylus tip and surface ...
Zhang, D. +4 more
core +1 more source
Advanced Materials, EarlyView.Ordered three‐dimensional anodic aluminum oxide (3D‐AAO) nanoarchitectures with longitudinal and transverse pores enable architecture‐driven metamaterials. The review maps fabrication advances, including hybrid pulse anodization, and shows how 3D‐AAO templates tailor properties across magnetism, energy, catalysis, and sensing.
Marisol Martín‐González
wiley +1 more source
Passiv damping on spacecraft sandwich panels
, 2007 For reusable and expendable launch vehicles as well as for other spacecraft structural vibration loads are safety critical design drivers impacting mass and lifetime. Here, the improvement of reliability and safety, the reduction of mass, the extension
Romberg, Oliver +3 more
core
MODELLING AND ANALYSIS OF CHATTER MITIGATION STRATEGIES IN MILLING [PDF]
, 2013 Machining stability plays a major role in improving machine tool performance and product quality. Uncontrolled chatter phenomenon causes too many defects and problems in manufacturing industry such as increased surface roughness, tool wear and even ...
Saleh, Khaled
core