Results 91 to 100 of about 178,077 (297)
Digital Holographic Interferometry for Micro-Deformation Analysis of Morpho Butterfly Wing
PhotonicsIn this study, we present an analysis of deflections in a Morpho butterfly wing using digital holographic interferometry (DHI). Our methodology revolves around an off-axis lensless Fourier holographic setup, using laser excitation to induce deflections ...
Ali Mardan Dezfouli +4 more
doaj +1 more source
SoftwareX, 2021 Fringe projection profilometry and off-axis digital holographic interferometry are two techniques commonly used for non-contact optical surface measurement and movement tracking; however, they can be difficult to implement due to the complex software ...
Parsa Omidi +4 more
doaj
Pulsatile microvascular blood flow imaging by short-time Fourier transform analysis of ultrafast laser holographic interferometry [PDF]
arXiv, 2015 We report on wide-field imaging of pulsatile microvascular blood flow in the exposed cerebral cortex of a mouse by holographic interferometry. We recorded interferograms of laser light backscattered by the tissue, beating against an off-axis reference beam with a 50 kHz framerate camera.
arxiv
, 2014 . Long-wave infrared digital holographic interferometry with CO2 laser and microbolometer arrays has been developed for testing the large deformations of space reflectors.
J. Vandenrijt +5 more
semanticscholar +1 more source
Advances in Materials Science and Engineering, 2018 Detection of the crack in an object is a critical problem for the health monitoring of a transparent object. The real-time and quantitative measurement of the crack-tip stress intensity factor (SIF) remains an open issue.
Haiting Xia +3 more
doaj +1 more source
Scarring in vibrational modes of thin metal plates [PDF]
arXiv, 2000 We report the first direct experimental observation of scarring phenomenon in transverse vibrational modes of a thin metal plate. The plate has the shape of a full stadium and clamped boundary conditions. Normal modes are imaged using time-averaged holographic interferometry, and modes corresponding to ``bouncing ball'' and higher order periodic ...
arxiv
INVESTIGATION OF HIGH-CURRENT INTERRUPTING CONTACTS WORKING SURFACES MECHANICAL INTERACTION NATURE
Electrical engineering & Electromechanics, 2016 Introduction. The nature of the interaction of high-working surfaces of the electrical contact uniquely affects their performance. By the failure of the contacts in the main drive processes resulting from complex destructive factors affecting their ...
O.G. Volkova, L.B. Zhornyak
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Pseudo-Degeneracy in Handbell Modes [PDF]
arXiv, 2010 The vibrational modes of handbells exist in nearly-degenerate pairs which have been split by nonuniformities in the bell. The possibility of intentionally re-combining a pair into pseudo-degeneracy was explored by adding mass to various locations on a C4 handbell.
arxiv
IEEE Photonics Journal, 2014 A method of visualizing a paraelectric Mn:KNTN crystal and measuring its Kerr electrooptic coefficient by digital holographic interferometry is presented. Digital holograms of the crystal with different voltages are recorded; a series of sequential phase
Lu Qieni +3 more
doaj +1 more source
PhotonicsWe use non-destructive Digital Holographic Speckle Pattern Interferometry (DHSPI), post-processing image analysis and one-dimensional exponential analysis to visualize, map and describe the structural condition of a plaster-based material.
Kyriaki Kosma, Vivi Tornari
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