Results 51 to 60 of about 384,122 (348)

Investigating the Effects of Build Height on Mechanical Behavior of Large‐Scale Laser Wire Directed Energy Deposited Nickel Titanium Alloy

open access: yesAdvanced Engineering Materials, EarlyView.
Laser wire directed energy deposition process was leveraged to fabricate large scale NiTi alloy wall. Evaluation of build‐height‐dependent tribo‐mechanical properties revealed significant differences in location specific sample characteristics. The middle region achieved optimal performance (superior wear resistance, balanced strength‐ductility ...
Hyunsuk Choi   +5 more
wiley   +1 more source

Sliding mode control based piezoelectric actuator control [PDF]

open access: yes, 2004
In this paper a method for piezoelectric stack actuator control is proposed. In addition a brief discussion about the usage of the same methods for estimation of external force acting to the actuator in contact with environment is made.
Abidi, Khalid Seyed   +4 more
core  

Construction and Characterization of a Frequency-Controlled, Picometer-Resolution, Displacement Encoder-Actuator

open access: yes, 2015
We have constructed an actuator/encoder whose generated displacement is controlled through the resonance frequency of a microwave cavity. A compact, 10-micrometer-range, digitally-controlled actuator executing frequency-coded displacement with picometer ...
Holczer, Karoly   +2 more
core   +1 more source

Construction of a Fish-like Robot Based on High Performance Graphene/PVDF Bimorph Actuation Materials. [PDF]

open access: yes, 2016
Smart actuators have many potential applications in various areas, so the development of novel actuation materials, with facile fabricating methods and excellent performances, are still urgent needs.
Chang, Huicong   +7 more
core   +1 more source

Experimental Analysis and Physics‐Based Analytical Model on Twisted and Coiled Artificial Muscles

open access: yesAdvanced Engineering Materials, EarlyView.
Twisted and coiled artificial muscles made from silver‐coated nylon fibers are investigated through experiments and analytical modeling. The actuators achieve contractions up to 19.3% and specific work of 8 kJ kg−1, though efficiency remains limited (≈0.15%) by thermal losses.
Salvatore Garofalo   +3 more
wiley   +1 more source

Potential of Piezoelectric MEMS Resonators for Grape Must Fermentation Monitoring

open access: yesMicromachines, 2017
In this study grape must fermentation is monitored using a self-actuating/self-sensing piezoelectric micro-electromechanical system (MEMS) resonator.
Georg Pfusterschmied   +9 more
doaj   +1 more source

Challenges during Flash Lamp Annealing of Aerosol‐Deposited Barium Titanate Films

open access: yesAdvanced Engineering Materials, EarlyView.
Aerosol deposition is used to rapidly deposit barium titanate films with thicknesses ranging from 2 to 16 μm at room temperature, eliminating the need for further densification. However, to recover the electromechanical properties, annealing is required, which limits the usage of temperature‐sensitive substrates.
Michel Kuhfuß   +7 more
wiley   +1 more source

Correction to: TDOA versus ATDOA for wide area multilateration system

open access: yesEURASIP Journal on Wireless Communications and Networking, 2020
The paper (Stefanski and Sadowski, EURASIP J. Wirel. Commun. Netw. 2018, Article 179) introduces a multilateration algorithm for unsynchronized sensor networks. However, a very similar method has been proposed before that is not cited.
Daniel Frisch, Uwe D. Hanebeck
doaj   +1 more source

Efficient Multifunctional Response and Polarization Switching in BiFeO3–PbZr0.58Ti0.42O3–MnFe2O4‐Based Triphasic Composites for Advanced Pulsating Applications

open access: yesAdvanced Engineering Materials, EarlyView.
Triphasic BiFeO3–PbZr0.58Ti0.42O3–MnFe2O4 composites exhibit enhanced ferroelectric and magnetic behavior, achieving 70.76% energy‐storage efficiency and improved polarization switching. The coupling between ferroelectric and magnetic phases enables multifunctional performance, making these composites promising candidates for next‐generation energy ...
Hassan Raza Khan   +7 more
wiley   +1 more source

Biosensing System for Concentration Quantification of Magnetically Labeled E. coli in Water Samples

open access: yesSensors, 2018
Bacterial contamination of water sources (e.g., lakes, rivers and springs) from waterborne bacteria is a crucial water safety issue and its prevention is of the utmost significance since it threatens the health and well-being of wildlife, livestock, and ...
Anna Malec   +3 more
doaj   +1 more source

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