Results 101 to 110 of about 1,070,708 (345)

Investigation of Lumped-Mass Method on Coupled Torsional-longitudinal Vibrations for a Marine Propulsion Shaft with Impact Factors

Journal of Marine Science and Engineering, 2019
Severe vibrations of the marine propulsion shaft can evidently affect the dynamical response of the propulsion system and degrade the performance of a ship.
Qianwen Huang, Haiyun Liu, Jiyin Cao
doaj   +1 more source

Realization of a Bilayer Elastic Topological Insulator

Advanced Science, EarlyView.
Bilayer elastic wave topological insulators are experimentally realized, introducing the layer degree of freedom to access four topological phases. This enables diverse domain walls and transmission behaviors, including interlayer conversion and beam splitting.
Chengzhi Ma, Zhiwei Song, Zheyu Cheng, Jiu Hui Wu, Baile Zhang   +4 more
wiley   +1 more source

Modeling and Calibration for Crack Detection in Circular Shafts Supported on Bearings Using Lateral and Torsional Vibration Measurements

Advances in Mechanical Engineering, 2012
In this paper the requisite foundational numerical and experimental investigations that are carried out, to model the “uncracked and cracked” shaft and to identify its bending and torsional vibration responses, are reported. The cylindrical shaft used in
A. Tlaisi, A. S. J. Swamidas, M. R. Haddara, A. Akinturk   +3 more
doaj   +1 more source

Evaluation of Input-Shaping Control Robustness for the Reduction of Torsional Vibrations

IEEE transactions on industry applications, 2021
Constanza Ahumada, P. Wheeler
semanticscholar   +1 more source

Charge Injection and Transport in an Isoindigo‐Based Polymer Transistor

Advanced Electronic Materials, EarlyView.
This study presents the charge injection and transport properties of field‐effect transistors based on an isoindigo‐bithiophene donor‐acceptor polymer semiconductor contacted with thiolated self‐assembled monolayer (SAM)‐functionalized electrodes. Temperature‐dependent contact characteristics are measured and simulated.
Zuchong Yang, Daniele Zucchelli, Melissa Berteau‐Rainville, Qi Wang, Sydney Mikulin, Ingo Salzmann, Steffen Duhm, Fabrizio Torricelli, Emanuele Orgiu   +8 more
wiley   +1 more source

Resonant Acoustic Determination of Complex Elastic Moduli [PDF]

, 1991
A simple, inexpensive, yet accurate method for measuring the dynamic complex modulus of elasticity is described. Using a 'free-free' bar selectively excited in three independent vibrational modes, the shear modulus is obtained by measuring the frequency ...
Brown, David A., Garrett, Steven L.
core   +1 more source

Electromechanical Magnetization Switching

, 2015
We show that the magnetic moment of a composite multiferroic torsional oscillator can be switched by the electric field. The 180$^o$ switching arises from the spin-rotation coupling and is not prohibited by the different symmetry of the magnetic moment ...
Chudnovsky E. M., Eugene M. Chudnovsky, Reem Jaafar   +2 more
core   +2 more sources

Toward a Rational Design of Conjugated Copolymers with Oxygenated Side Chains for Boosting Thermoelectric Properties

Advanced Energy Materials, EarlyView.
The molecular design strategy that integrates both side chain and backbone engineering in diketopyrrolopyrrole‐based conjugated polymers to identify the optimal balance between doping efficiency and microstructural order is demonstrated. Comprehensive spectroscopic, electrochemical, morphological, and structural characterizations reveal that the ...
Taewoong Han, Suhui Sim, Hoimin Kim, Taewoong Yoon, Hyungju Ahn, Seungjoo Chang, Namgyu Park, Hajeong Kim, Shabaz Alam, Dongki Lee, Sungjun Park, Sungjoo Lee, Jaewon Lee, Boseok Kang   +13 more
wiley   +1 more source

Multimodal Locomotion of Soft Robots

Advanced Intelligent Systems, EarlyView.
This review comprehensively surveys recent advances in multimodal locomotion within soft robotics. Typical locomotion modes are summarized and categorized. Furthermore, the underlying mechanisms enabling multimodal locomotion are discussed and classified into three primary categories: active control‐based, reconfiguration‐based, and environment ...
Zihao Yuan, Huangwei Ji, Kai Huang, Feifei Chen, Guoying Gu   +4 more
wiley   +1 more source

Torsional Vibration Suppression in Multi-Condition Electric Propulsion Systems Through Harmonic Current Modulation

Actuators
Electric helicopters represent a pivotal component in the advancement of urban air mobility (UAM), with considerable potential for future development. The electric propulsion system (EPS) is the core component of these systems.
Hanjie Jia, Guanghong Hu, Xiangyang Xu, Dong Liang, Changzhao Liu   +4 more
doaj   +1 more source