Results 11 to 20 of about 531 (180)

Demonstration of a family of X-ray dark-field retrieval approaches on a common set of samples. [PDF]

J Synchrotron Radiat
This study aims to guide users of dark‐field imaging in selecting the most suitable technique for their imaging goals. To this end, we provide a summary table and highlight opportunities for future research into the sources of dark‐field contrast across emerging methods.There are various imaging setups capable of capturing dark‐field images, each with ...
Alloo SJ, How YY, Ahlers JN, Paganin DM, Croughan MK, Morgan KS.   +5 more
europepmc   +2 more sources

Curvy Surface Reconstruction. [PDF]

Adv Sci (Weinh)
This review introduces the concept of “general curvy surface reconstruction,” which incorporates both geometric and physical dimensions, representing an upgrade over conventional geometric reconstruction that focuses solely on spatial relationships. Particular emphasis is placed on the emerging opportunities enabled by advanced measurement techniques ...
Shang C, Qi H, Wang Z, Meng K, Liu Z, Meng Z, Yang Y, Wang J, Jiang S.   +8 more
europepmc   +2 more sources

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
doaj   +1 more source

Extended-range temporal electronic speckle pattern interferometry [PDF]

Applied Optics, 2002
In recent years the availability of high-speed digital video cameras has motivated the study of electronic speckle pattern interferometry (ESPI) in the time domain. To this end a properly sampled temporal sequence of N-fringe patterns is used to analyze the temporal experiment.
Quiroga Mellado, Juan Antonio, Servín Guirado, Manuel, Dávila Álvarez, Abundio   +2 more
openaire   +4 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
doaj   +1 more source

Residual stress measurement on the butt-welded area by electronic speckle pattern interferometry

Nuclear Engineering and Technology, 2015
Background: Residual stress always exists on any kind of welded area. This residual stress can cause the welded material to crack or fracture. For many years, the hole-drilling method has been widely used for measuring residual stress.
Kyeongsuk Kim, Taeho Choi, Man gyun Na, Hyunchul Jung   +3 more
doaj   +1 more source

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
doaj   +1 more source

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
doaj   +1 more source

Artificial Neural Networks Application in Modal Analysis of Tires

Measurement Science Review, 2013
The paper deals with the application of artificial neural networks (ANN) to tires’ own frequency (OF) prediction depending on a tire construction. Experimental data of OF were obtained by electronic speckle pattern interferometry (ESPI).
Koštial P., Jančíková Z., Bakošová D., Valíček J., Harničárová M., Špička I.   +5 more
doaj   +1 more source

Phase-shifting algorithms for electronic speckle pattern interferometry [PDF]

Applied Optics, 2002
A set of innovative phase-shifting algorithms developed to facilitate metrology based on electronic speckle pattern interferometry (ESPI) are presented. The theory of a phase-shifting algorithm, called a (5,1) algorithm, that takes five phase-shifted intensity maps before a specimen is deformed and one intensity map after a specimen is deformed is ...
Chih-Cheng, Kao, Gym-Bin, Yeh, Shu-Sheng, Lee, Chih-Kung, Lee, Ching-Sang, Yang, Kuang-Chong, Wu   +5 more
openaire   +2 more sources