Results 11 to 20 of about 433,609 (313)

Shape descriptors for mode-shape recognition and model updating [PDF]

open access: yesJournal of Physics: Conference Series, 2009
The most widely used method for comparing mode shapes from finite elements and experimental measurements is the Modal Assurance Criterion (MAC), which returns a single numerical value and carries no explicit information on shape features. New techniques, based on image processing (IP) and pattern recognition (PR) are described in this paper.
Wang, W, Mottershead, JE, Mares, C
openaire   +4 more sources

Correction of Evanescent Wave Influence on the Flexural Wave Velocity and Wavelength Estimation Based on a Mode Shape Function [PDF]

open access: yes, 2022
The aim of this research is to use a simple acoustic method of a very near field recording, which enables measurement and display of oscillation modes, to estimate the velocity of flexural waves, based on the wavelengths of standing waves measured on the
Šumarac Pavlović, Dragana   +3 more
core   +2 more sources

Temperature-Modulated Micromechanical Thermal Analysis with Microstring Resonators Detects Multiple Coherent Features of Small Molecule Glass Transition

open access: yesSensors, 2020
Micromechanical Thermal Analysis utilizes microstring resonators to analyze a minimum amount of sample to obtain both the thermal and mechanical responses of the sample during a heating ramp.
Maximilian Karl   +4 more
doaj   +1 more source

Progressive failure analysis of helicopter rotor blade under aeroelastic loading

open access: yesAviation, 2020
Unlike metal structure, composite structures don’t give any clue till the fatal final collapse. The problem is more complicated when applied load on the structure is aeroelastic in nature. Under such loading, composite laminate experiences stresses.
Kamran Ahmad   +3 more
doaj   +1 more source

How Modes Shape Casimir Physics

open access: yesInternational Journal of Modern Physics A, 2022
Modes have steadily influenced the understanding of physical systems through time. At least since the prediction of the Casimir effect, they also play a very important role in Casimir physics and in the understanding of the different phenomena typical of this research field.
openaire   +2 more sources

Correlation of Short Pitch Rail Corrugation with Railway Wheel-Track Resonance at Low Frequencies of Excitation

open access: yesVibration, 2020
As much as there has been a significant increase in the development of railway systems in recent years, one of the significant drawbacks on this mode of transport is ground-borne vibrations and noise emanating from vehicle-track interaction in service ...
Bingo Masiza Balekwa   +1 more
doaj   +1 more source

Dynamic Characterization of Cercal Mechanosensory Hairs of Crickets

open access: yesInsects, 2012
Previous dynamic characterizations of the cercal mechanosensory hairs of crickets have generally been limited to the first resonant frequency and associated deflection shape.
Joel M. Book, Samuel F. Asokanthan
doaj   +1 more source

SCALING OF OPERATIONAL MODE SHAPES USING SENSITIVITY ANALYSIS [PDF]

open access: yesمجله مدل سازی در مهندسی, 2009
Recently, identification of dynamic properties of structures such as bridges, towers and building, which are not easy to excite, is possible by measuring only the output responses. Due to measuring only the responses when the structure is excited only by
محمد مهدی Khatibi   +2 more
doaj   +1 more source

Influence of Mechanical Properties on Modal Analysis of Natural Fiber Reinforced Laminated Composite Trapezoidal Plates

open access: yesJournal of Natural Fibers, 2021
Present work concentrates on modal parameters of laminated composite plates composed of natural fibers reinforced with unsaturated polyester resin. The selected jute and ramie fibers underwent alkaline treatment to improve mechanical properties.
D.R. Rajkumar   +2 more
doaj   +1 more source

Broadband single-mode microfiber coupler for OCT [PDF]

open access: yes, 2009
We present a bi-conical microfiber coupler (MFC) with a specifically designed transition region as an efficient tool to filter higher-order modes in multimode waveguides.
David J. Richardson   +5 more
core   +1 more source

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