Results 121 to 130 of about 189,979 (289)
Holographic and ultrasonic detection of bond flaws in aluminum panels reinforced with boron-epoxy [PDF]
An experimental investigation was made of the application of holographic interferometry to the nondestructive detection of unbonded areas (flaws) in bonded panels.
Platt, R. J., Jr., Thurston, L. B., Jr.
core +1 more source
Dynamic holographic interferometry using a Bi12SiO20 photorefractive crystal and monomode optical fibres [PDF]
, 1993 Dynamic holographic interferometry using polarization preserving opticai fibres as light guides and incorporating a photorefractive Bi12SiO20 (BSO) crystal as the recording medium is described.
Hobson, PR, Potter, J, Spooncer, RC
core
Applied Optics, 2013 Digital holographic interferometry in the long-wave infrared domain has been developed by combining a CO(2) laser and a microbolometer array. The long wavelength allows large deformation measurements, which are of interest in the case of large space ...
M. Georges +6 more
semanticscholar +1 more source
A simplified holographic-interferometry technique for real-time flow visualization and analysis [PDF]
A holographic-interferometry technique for flow visualization and analysis that produces real-time moire fringes is described from both experimental and application considerations.
Long, S. A., Spencer, R. C.
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Information retrieval from holographic interferograms: Fundamentals and problems [PDF]
Holographic interferograms can contain large amounts of information about flow and temperature fields. Their information content can be very high because they can be viewed from many different directions. This multidirectionality, and fringe localization
Vest, Charles M.
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A Review: Phase Measurement Techniques Based on Metasurfaces
PhotonicsPhase carries crucial information about the light propagation process, and the visualization and quantitative measurement of phase have important applications, ranging from ultra-precision metrology to biomedical imaging.
Zhicheng Zhao +2 more
doaj +1 more source
A tomographic technique for aerodynamics at transonic speeds [PDF]
Computer aided tomography (CAT) provides a means of noninvasively measuring the air density distribution around an aerodynamic model. This technique is global in that a large portion of the flow field can be measured.
Lee, G.
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Measurement of fluid properties using rapid-double-exposure and time-average holographic interferometry [PDF]
The holographic recording of the time history of a flow feature in three dimensions is discussed. The use of diffuse illumination holographic interferometry or the three dimensional visualization of flow features such as shock waves and turbulent eddies ...
Decker, A. J.
core +1 more source
Two-color holography concept (T-CHI) [PDF]
The Material Processing in the Space Program of NASA-MSFC was active in developing numerous optical techniques for the characterization of fluids in the vicinity of various materials during crystallization and/or solidification.
Caulfield, H. J. +7 more
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