Results 41 to 50 of about 35,563 (301)

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

Advanced 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, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

Influences of the Stiffness and Damping Parameters on the Torsional Vibrations’ Severity in Petroleum Drilling Systems

Energies
The torsional, lateral, and axial vibrations that occur during drilling operations have negative effects on the drilling equipment. These negative effects can cause huge economic impacts, as the failure of drilling tools results in wasted materials, non ...
Mohamed Zinelabidine Doghmane
doaj   +1 more source

Exploiting Cyclic Angle-Dependency in a Kalman Filter-Based Torque Estimation on a Mechatronic Drivetrain

Actuators, 2022
Torsional vibrations play a critical role in the design and operation of a mechanical or mechatronic drivetrain due to their impact on lifetime, performance, and cost.
Thijs Van der Veken, Jan Croes, Matteo Kirchner, Jonathan Baake, Wim Desmet, Frank Naets   +5 more
doaj   +1 more source

Harnessing bifurcations in tapping-mode atomic force microscopy to calibrate time-varying tip-sample force measurements

, 2007
Torsional harmonic cantilevers allow measurement of time varying tip-sample forces in tapping-mode atomic force microscopy. Accuracy of these force measurements is important for quantitative nanomechanical measurements.
Sahin, Ozgur
core   +1 more source

Vibration and buckling of thin-walled composite I-beams with arbitrary lay-ups under axial loads and end moments [PDF]

, 2013
A finite element model with seven degrees of freedom per node is developed to study vibration and buckling of thin-walled composite I-beams with arbitrary lay-ups under constant axial loads and equal end moments.
Banerjee J. R., Banerjee J. R., Bank L. C., Bleich F., Gjelsvik A., Jaehong Lee, Jones R.M., Joshi A., Joshi A., Kaya M., Kim N. I., Kim N. I., Kim N. I., Lee J., Lee J., Lee J., Leung A.Y. T., Leung A.Y. T., Leung A.Y. T., Leung A.Y. T., Li J., Li J., Machado S.P., Mohri F., Mohri F., Pavlovic R., Sapountzakis E. J., Sapountzakis E. J., Sapountzakis E. J., Thuc Phuong Vo, Timoshenko S., Timoshenko S., Vlasov V. Z., Voros G. M.   +33 more
core   +2 more sources

Exploring Dipolar Dynamics and Ionic Transport in Metal‐Organic Frameworks: Experimental and Theoretical Insights

Advanced Functional Materials, EarlyView.
In this study, the interplay of dipolar dynamics and ionic charge transport in MOF compounds is investigated. Synthesizing the novel structure CFA‐25 with integrated freely rotating dipolar groups, local and macroscopic effects, including interactions with Cs cations are explored.
Ralph Freund, Arthur Schulz, Peter Lunkenheimer, Maryana Kraft, Thomas Bergler, Harald Oberhofer, Dirk Volkmer   +6 more
wiley   +1 more source

THE DIAGNOSTICS OF VISCOTIC DUMPERS OF TORSIONAL VIBRATIONS [PDF]

Scientific Journal of Silesian University of Technology. Series Transport, 2014
The general problems connected with the vibrations of crankshafts with a pay particular attention to the torsional vibrations are discussed in the paper.
Wojciech HOMIK
doaj  

3D (Bio) Printing Combined Fiber Fabrication Methods for Tissue Engineering Applications: Possibilities and Limitations

Advanced Functional Materials, EarlyView.
Biofabrication aims at providing innovative technologies and tools for the fabrication of tissue‐like constructs for tissue engineering and regenerative medicine applications. By integrating multiple biofabrication technologies, such as 3D (bio) printing with fiber fabrication methods, it would be more realistic to reconstruct native tissue's ...
Waseem Kitana, Indra Apsite, Leonid Ionov   +2 more
wiley   +1 more source

Rezultati proračuna torzionih oscilacija u sistemu brodske dizel motorne propulzije / The results of torsional vibration calculation in the ship diesel engine propulsion system

Vojnotehnički Glasnik, 2008
U radu je prikazan tradicionalan postupak proračuna torzionih oscilacija u sistemu brodske dizel motorne propulzije. Realan sistem zamenjen je ekvivalentnim sistemom sa 19 stepeni slobode kretanja, za koji su analizirane slobodne i prinudne torzione ...
Dragan R. Trifković, Predrag Dobratić, Živojin O. Petrović   +2 more
doaj   +1 more source

Vibration analysis of simultaneous drilling and reaming BHA

Journal of Petroleum Exploration and Production Technology, 2020
The drillstring used in the oil and gas exploration is a complex structure due to the different forces acting on it. One of the primary sources of drillstring vibrations is the cutting forces caused by the drill bit contact with the rock formation.
Mohammed F. Al Dushaishi, Daniel S. Stutts   +1 more
doaj   +1 more source