Results 11 to 20 of about 7,364 (219)

Scoliosis Brace Finite Element Model and Preliminary Experimental Testing Using Electronic Speckle Pattern Interferometry

Applied Sciences, 2022
This article presents the results of numerical finite element method (FEM) simulations in the Ansys environment of a Boston orthopaedic brace. The geometric model was developed based on the results of digitisation performed by means of a three ...
Slawomir Grycuk, Piotr Mrozek
doaj   +1 more source

Stress and Strain Fields Analysis by Method ESPI with Use of Fixture for Shear Examination Arcan [PDF]

Transactions of the VŠB-Technical University of Ostrava, Mechanical Series, 2013
This article describes the possibilities of utilizing of ESPI - Electronic Speckle Pattern Interferometry for system Q-100 application for strain and stress analysis on surface of flat specimens predominantly loaded by shear deformation.
Matúš KALINA, Luboš PEČENKA, František ŠIMČÁK   +2 more
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Experimental determination of vibration characteristics of turbine blades with an immunity digital speckl interferometer

Авіаційно-космічна техніка та технологія, 2021
The paper notes the wide possibilities and high efficiency of vibration diagnostics of parts and assemblies of power units by the method of electronic speckle interferometry (ESI), shows the feasibility of developing and improving methods for obtaining ...
Михаил Романович Ткач, Юрий Григорьевич Золотой, Ирина Юрьевна Жук, Юрий Николаевич Галинкин, Аркадий Юрьевич Проскурин, Владимир Сергеевич Ключник   +5 more
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Deep Learning-Based Wrapped Phase Denoising Method for Application in Digital Holographic Speckle Pattern Interferometry

Applied Sciences, 2020
This paper presents a new processing method for denoising interferograms obtained by digital holographic speckle pattern interferometry (DHSPI) to serve in the structural diagnosis of artworks.
Ketao Yan, Lin Chang, Michalis Andrianakis, Vivi Tornari, Yingjie Yu   +4 more
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Designing Physical Unclonable Functions From Optically Active Materials. [PDF]

Adv Mater
Assigning unforgeable “fingerprints” to manufactured goods is a key strategy to fight global counterfeiting. Optical physical unclonable functions (PUFs) are chemically generated random patterns of optically active materials serving as unique authenticators.
Klausen M, Zhang J, Stevens MM.
europepmc   +2 more sources

Residual stresses near cold-expanded hole at different stages of high-cycle fatigue by crack compliance data

Fracture and Structural Integrity, 2021
Experimental method for a characterization of high-cycle fatigue evolution of residual stress near cold-expanded hole is developed and implemented. The technique is based on simultaneous measurements of deformation response to narrow notch, inserted in ...
S. I. Eleonsky, V.S. Pisarev, M.D. Zajtsev, M.Ch. Zichenkov, M.R. Abdullin   +4 more
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Digital Double-Pulse Holographic Interferometry for Vibration Analysis

Shock and Vibration, 1996
Different arrangements for double-pulsed holographic and speckle interferometry for vibration analysis will be described. Experimental results obtained with films (classical holographic interferometry) and CCD cameras (digital holographic interferometry)
H.J. Tiziani, G. Pedrini
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An Integrated Method for the Vibroacoustic Evaluation of a Carbon Fiber Bouzouki

Applied Sciences, 2023
An integrated method, which combines Electronic Speckle Pattern Interferometry, impulse response measurements, finite element method simulations, and psychoacoustic tests, is proposed to evaluate the vibroacoustic behavior of a carbon fiber bouzouki ...
Spyros Brezas, Markos Katsipis, Yannis Orphanos, Evaggelos Kaselouris, Kostas Kechrakos, Nikos Kefaloyannis, Helen Papadaki, Antonis Sarantis-Karamesinis, Stylianos Petrakis, Ioannis Theodorakis, Efstratios Iliadis, Tilemachos Karagkounidis, Ioannis Koumantos, Michael Tatarakis, Makis Bakarezos, Nektarios A. Papadogiannis, Vasilis Dimitriou   +16 more
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Michelson Interferometry with the Keck I Telescope [PDF]

, 2000
We report the first use of Michelson interferometry on the Keck I telescope for diffraction-limited imaging in the near infrared JHK and L bands. By using an aperture mask located close to the f/25 secondary, the 10 m Keck primary mirror was transformed ...
Buscher D., Buscher D. F., Buscher D. F., C. A. Haniff, Chanan G., Cornwell T. J., E. H. Wishnow, Golay M. J. E., Gull S. F., Haniff C. A., Hogbom J., J. D. Monnier, Jennison R. C., Labeyrie A., Lohmann A. W., Michelson A. A., Monnier J. D., Negrete-Regagnon P., P. G. Tuthill, Roddier F., W. C. Danchi, Weigelt G., Wilson R. W.   +22 more
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Modern optical astronomy: technology and impact of interferometry [PDF]

, 2002
The present `state of the art' and the path to future progress in high spatial resolution imaging interferometry is reviewed. The review begins with a treatment of the fundamentals of stellar optical interferometry, the origin, properties, optical ...
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