Quantitative Applications of Holographic Interferometry to Wind-tunnel Testing PDF Download
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Author: Tse-Fou Zien
Publisher:
ISBN:
Category : Holographic interferometry
Languages : en
Pages : 120
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Book Description
Holographic interferometry was successfully applied to a large-scale wind tunel (40-cm x 40-cm test section) experiment on a three-dimensional flow field. The laser interferometer was set up in a schlieren bench with a pulsed-ruby laser as the light source. Both the object beam and the reference beam were collimated. The conventional double-exposure, off-axis operation was used to produce interferograms...
Author: Tse-Fou Zien
Publisher:
ISBN:
Category : Holographic interferometry
Languages : en
Pages : 120
Get Book Here
Book Description
Holographic interferometry was successfully applied to a large-scale wind tunel (40-cm x 40-cm test section) experiment on a three-dimensional flow field. The laser interferometer was set up in a schlieren bench with a pulsed-ruby laser as the light source. Both the object beam and the reference beam were collimated. The conventional double-exposure, off-axis operation was used to produce interferograms...
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Holographic interferometry was successfully applied to a large-scale wind tunnel (40-cm x 40-cm test section) experiment on a three-dimensional flow field. The laser interferometer was set up in a schlieren bench with a pulsed-ruby laser as the light source. Both the object beam and the reference beam were collimated. The conventional double-exposure, off-axis operation was used to produce interferograms. A 15-degree half-angle opaque cone at zero and 16.5 degrees yaw in a M = 2 free stream provided the flow field for the investigation. The aerodynamic conditions were such that flow field was largely inviscid.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 102
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Book Description
Holographic interferometry was successfully applied to a large-scale wind tunnel (40-cm x 40-cm test section) experiment on a three-dimensional flow field. The laser interferometer was set up in a schlieren bench with a pulsed-ruby laser as the light source. Both the object beam and the reference beam were collimated. The conventional double-exposure, off-axis operation was used to produce interferograms. A 15-degree half-angle opaque cone at zero and 16.5 degrees yaw in a M = 2 free stream provided the flow field for the investigation. The aerodynamic conditions were such that flow field was largely inviscid.
Author: Charles M. Vest
Publisher:
ISBN:
Category :
Languages : en
Pages : 135
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Book Description
This final technical report on quantitative interpretation of multidirectional holographic interferometry contains summaries of a number of specific investigations conducted in the Department of Mechanical Engineering, The University of Michigan. The primary objective of this research is the minimization of data required to obtain complete three-dimensional density information from wind tunnel holographic interferometry tests on arbitrary models. The investigations described herein are: (1) The theory of reconstruction of functions from their projections was reviewed and evaluated in the context of application to holographic interferometric data of the type used for wind tunnel diagnostics; (2) Using computer-simulated experimental data, several algorithms for data analysis were compared; (3) A study of direct three-dimensional reconstruction of density fields, as opposed to reconstruction of the fields on a set of cross-sectional planes, was conducted; (4) The use of a priori knowledge of the physical structure of the field being measured was considered; (5) The problems associated with refraction of probing optical rays were studied; (6) Experimental work of limited scope was carried out. A study of illumination schemes for multi-directional holographic interferometers resulted in the design of a holographic phase grating for generating several plane waves of high optical quality, each propagating in a different direction.
Author: J. E. O'Hare
Publisher:
ISBN:
Category :
Languages : en
Pages : 45
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Book Description
This report summarizes the progress achieved in the von Karman Gas Dynamics Facility (VKF) of the Arnold Engineering Development Center (AEDC), Air Force Systems Command (AFSC) in the: (1) development of operational techniques and hardware for recording holographic interferograms in the VKF wind tunnels, (2) development of automated image analysis techniques for reducing quantitative flow-field data from holographic interferograms, and (3) investigation and development of software for the application of digital image analysis to other photographic techniques used in wind tunnel testing. (Author).
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 20
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Book Description
Author: R. S. Sirohi
Publisher: SPIE-International Society for Optical Engineering
ISBN:
Category : Science
Languages : en
Pages : 780
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Book Description
Applications of holographic interferometry are so vast that they are limited only by the imagination of the researchers. This collection represents a variety of HI applications, from micro-crack detection in ancient paintings to holographic testing of nuclear technology.
Author: Naval Surface Warfare Center (U.S.)
Publisher:
ISBN:
Category : Ordnance, Naval
Languages : en
Pages : 472
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Book Description
Author: Thomas Kreis
Publisher: John Wiley & Sons
ISBN: 3527604928
Category : Science
Languages : en
Pages : 554
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Book Description
The book presents the principles and methods of holographic interferometry - a coherent-optical measurement technique for deformation and stress analysis, for the determination of refractive-index distributions, or applied to non-destructive testing. Emphasis of the book is on the quantitative computer-aided evaluation of the holographic interferograms. Based upon wave-optics the evaluation methods, their implementation in computer-algorithms, and their applications in engineering are described.
Author: Charles M. Vest
Publisher: Wiley-Interscience
ISBN:
Category : Photography
Languages : en
Pages : 492
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Book Description
A unified, comprehensive, self-contained treatment of theory, practice, and application, including related coherent optical techniques. Emphasizes quantitative evaluation of holographic interferograms of both opaque and transparent objects, explaining how tools such as the laser and holography are being applied to present-day measurement problems. Applies clear, simple, physical reasoning to present practical information and data; circumvents complicated mathematics wherever possible. Includes over 700 cited references, numerous line drawings and photographs, and several useful tables and equations relating optical data to physical properties.
