Results 61 to 70 of about 388,267 (293)

Phase Demodulation of Rotor Torsional Vibration Measurement under Time-Varying Speed

open access: yesShock and Vibration, 2022
When torsional vibration is measured with the zebra-tape method, the modulation signals can be contaminated by electrical noise, environmental noise, step noise, sensor nonlinearities, and so on.
Moli Chen   +4 more
doaj   +1 more source

Torsional Vibration Of Machine Systems [PDF]

open access: yes, 1977
LecturePg. 13-22.This paper is concerned with torsional vibration in the design, development, and fault diagnosis and correction of machine systems. The physical behavior of torsional vibrations in shafting systems and sources of torsional excitation are
Eshleman, Ronald L.
core   +1 more source

Cross‐Scale Hierarchical Targeted Delivery System Based on Small‐Scale Magnetic Robots

open access: yesAdvanced Robotics Research, EarlyView.
This article reviews a cross‐scale hierarchical targeted delivery system that integrates magnetic continuum robots and magnetic microrobots. By combining rapid long‐range navigation with precise microscale targeting, the system overcomes key limitations of single‐scale approaches.
Junjian Zhou   +4 more
wiley   +1 more source

A Versatile‐Designable Framework for Active and Programmable Shape‐Morphing Soft Matter Systems: From Inverse Design to Closed‐Loop Control

open access: yesAdvanced Science, EarlyView.
A versatile framework integrates addressable electrothermal actuation and strain‐constraint mechanisms to construct programmable shape‐morphing soft matter systems. By combining an analytical inverse design strategy for high‐fidelity 3D surface reconstruction with deep learning‐based closed‐loop control, this approach enables zero‐energy shape locking,
Kai Liu   +5 more
wiley   +1 more source

Dynamics Simulation Analysis of Tooth Root Crack Fault of Planetary Gearbox based on Torsional Vibration Signal

open access: yesJixie chuandong, 2021
The vibration-based methods have been widely used in the tooth root crack fault diagnosis of planetary gearbox. Compared with traditional transverse vibration signal,torsional vibration signal is not affected by the modulation of time-varying ...
Wei Wei, Yunpeng Li, Yanshuai Yang
doaj  

Kresling Origami‐Based Metamaterial Robot for Dynamic Electromagnetic Control

open access: yesAdvanced Science, EarlyView.
A reconfigurable metamaterial system integrates deformable origami units with high‐permittivity ceramic plates. Pneumatic switching between structural states alters local resonance conditions, enabling dynamic radar stealth and adaptive microwave reflection for mobile communication.
Xinxi Zeng   +13 more
wiley   +1 more source

Integration of Theoretical and Experimental Torsional Vibration Analysis in a Marine Propulsion System with Component Degradation

open access: yesApplied Sciences
This study investigates torsional vibration characteristics in an aged coastal car ferry propulsion system using theoretical calculations based on the Matrix method alongside experimental measurements.
Quang Dao Vuong   +2 more
doaj   +1 more source

Dilatant-Fluid Torsional Vibration Damper for a Four-Stroke Diesel Engine Crankshaft

open access: yesPolish Maritime Research, 2023
This paper presents a study of a viscous torsional vibration damper for a crankshaft of a four-stroke diesel engine. The reliable operation of a widely used silicone-type viscous damper depends on the ability of the silicone oil to absorb the energy of ...
Kozytskyi Sergiy, Kiriian Sergii
doaj   +1 more source

Stretchable, Tough, and Luminescent Perovskite Molecular Ferroelectric Composite: Empowering Reliable Self‐Powered Motion Sensing in High Humidity and Subzero Temperatures

open access: yesAdvanced Science, EarlyView.
A flexible molecular ferroelectric composite is fabricated via in situ growth of luminescent DMAA‐MnCl3 ferroelectric crystals within a SEBS/SIS double‐polymer matrix. It delivers 7.54 MPa tensile strength, over 1200% tensile strain, durable piezoelectric motion sensing, and excellent harsh‐environment stability for all‐weather wearable biomechanical ...
Shuangqing Li   +6 more
wiley   +1 more source

Transient torsional vibration analysis of marine diesel engine under short-circuit impact

open access: yesZhongguo Jianchuan Yanjiu
ObjectivesIn order to formulate an optimization scheme for the torsional vibration parameters of a marine diesel generator shaft system, it is necessary to analyze the transient torsional vibration characteristics of the diesel generator under short ...
Congcong XU   +6 more
doaj   +1 more source

Home - About - Disclaimer - Privacy