Results 11 to 20 of about 2,115 (205)
Modelling, 2023 The structural health monitoring (SHM) technique is a highly competent operative process dedicated to improving the resilience of an infrastructure by evaluating its system state. SHM is performed to identify any modification in the dynamic properties of
Reina El Dahr +3 more
doaj +1 more source
AIP Advances, 2013 We propose a vibration energy harvester consisting of an auxiliary frequency-tuned mass unit and a piezoelectric vibration energy harvesting unit for enhancing output power.
Jae Eun Kim, Yoon Young Kim
doaj +1 more source
Developing a new focal vibration and heat therapy system
Current Directions in Biomedical Engineering, 2023 Vibrational heating therapy is a type of physical therapy that uses the application of heat and vibrations to stimulate the body’s healing process. The therapy is believed to promote circulation, reduce inflammation, and relieve muscle tension.
Abbasimoshaei Alireza +2 more
doaj +1 more source
Sensors, 2021 Identifying cracks in the incipient state is essential to prevent the failure of engineering structures. Detection methods relying on the analysis of the changes in modal parameters are widely used because of the advantages they present.
Gilbert-Rainer Gillich +6 more
doaj +1 more source
On the Eigenfrequencies of an Ordered System of Nanoobjects [PDF]
, 2008 A method is discussed to determine the eigenfrequencies of nanostructures (nanotubes, nanospheres, and nanocrystals) by measuring the eigenfrequencies of a ‘large system’ that consists of an array of vertically oriented similar nanotubes or nanocrystals equidistantly grown on a substrate.
Eremeyev V. A., Altenbach H.
openaire +2 more sources
Eigenfrequency of Hydraulic Systems of Loading Device
EPJ Web of Conferences, 2016 Eigenfrequency of hydraulic systems belongs to important dynamic quantities. If the excitation frequency of a given hydraulic system is equal to the system eigenfrequency, high-amplitude pressure and flow pulsations can arise. It has a negative influence
Vašina Martin +2 more
doaj +1 more source
Investigations on Dynamical Stability in 3D Quadrupole Ion Traps
Applied Sciences, 2021 We firstly discuss classical stability for a dynamical system of two ions levitated in a 3D Radio-Frequency (RF) trap, assimilated with two coupled oscillators.
Bogdan M. Mihalcea, Stephen Lynch
doaj +1 more source
Complex Eigenmodes and Eigenfrequencies in Electromagnetics [PDF]
IEEE Transactions on Antennas and Propagation, 2021 A first comprehensive treatment on complex eigenmodes is presented for general lossy traveling-wave electromagnetic structures where the per unit length propagation phase shift ($β$) dependent complex eigenfrequencies $Ω(β)$ are mapped to the frequency dependent complex propagation constant $γ(ω_0)$ for variety of electromagnetic structures.
Joao G. Nizer Rahmeier +2 more
openaire +2 more sources
Fundamental Approach for Analysis of Dynamic Characteristics of Fixtures [PDF]
EAI Endorsed Transactions on Industrial Networks and Intelligent Systems, 2018 Present work is aimed at research of locating and clamping process of prismatic parts in fixtures during the machining on drilling-milling-boring machines.
Vitalii Ivanov, Ivan Pavlenko
doaj +1 more source
The Distribution of Eigenfrequencies of Anisotropic Fractal Drums [PDF]
Journal of the London Mathematical Society, 1999 Let \(\Gamma\) be an anisotropic fractal as it was defined by \textit{H. Triebel} in the book ``Fractals and spectra related to Fourier analysis and function spaces.'' (Birkhäuser, Basel, 1997), see Definition 5.2. The aim of the paper is to investigate the distribution of the eigenvalues of the fractal differential operator \((-\Delta)^{-1}\circ \text{
Farkas, Walter, Triebel, H
openaire +2 more sources