Download or read book Heterodyne Holography for Vibration Analysis written by B. Ineichen and published by . This book was released on 1980 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: The basic problems of quantitative determination of mechanical strain of vibrating object through holographic interferometry are discussed. Time-average holography, which is most commonly used for holographic vibration analysis, can not be combined with heterodyne evaluation, since the interference fringes are already frozen in the hologram. Synchronized double-pulse holography can be employed in the same manner as pulsed double exposure holography. Moreover, real-time holography allows to investigate the temporal behaviour of vibrations, but only at one or a few points sitaneously, depending on the number of detectors employed. Both methods were tested. The method uses essentially heterodyne holographic interferometry for the quantitative determination of the surface displacement from the fringe pattern in the image plane. Finally, a nearly fully automated camera with photothermoplastic film is presented to achieve fast and dry in-situ recording and processing of holograms with high diffraction efficiency. (Author).
Download or read book Heterodyne Holography for Vibration Analysis written by B. Ineichen and published by . This book was released on 1983 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Holographic Interferometry written by Thomas Kreis and published by John Wiley & Sons. This book was released on 2006-04-20 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Holography and Deformation Analysis written by W. Schumann and published by Springer. This book was released on 2013-04-17 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book series on Optical Sciences, holography has been the subject of three previous volumes. In particular, Vol. 16, written by one of us (W. S. ) and Dr. M. Dubas, treated holographic interferometry of opaque bodies from the standpoint of deformation analysis. However, the fundamental principles of holography are developed there only briefly in preparation for a discussion of interference fringe modifications. This new volume in the series is intended to consider in detail many topics which were previously omitted, such as the deformation or distortion of holo graphic images, the theory of volume holograms, composite or multiplex holo graphy, holographic interferometry of transparent media, time dependent effects, holographic contouring, and applications of fringe modifications to the deformation of opaque bodies. In addition, these and other subjects will be treated with the same unifying concept developed in Vol. 16, but with an addi tional emphasis on those features that have their origins in classical optics, espe cially the small-wavelength approach, the coupled-wave theory, and the Seidel aberrations. Since the field of holography and its various applications is growing rapidly, it is impossible to be comprehensive in a single book. Every effort has beep. made to avoid unnecessary duplication of Vol. 16. For example, displace ment and fringe localization problems are only briefly discussed, while some modification techniques (e. g. , sandwich holography) are not included. When needed, however, the reader is directly referred to complementary publications.
Download or read book Holographic Interferometry written by Pramod K. Rastogi and published by Springer. This book was released on 2013-04-17 with total page 343 pages. Available in PDF, EPUB and Kindle. Book excerpt: Holographic Interferometry provides a valuable and up-to-date source of information in the rapidly expanding field. The eight specialists` contributions cover the principles and methods currently in use. The scope of the book has been limited to the study of opaque object and ample space has been devoted to a comprehensive treatment of the phenomena of fringe formation, with a particular emphasis on the quantitative evaluation of the holographic interference fringe patterns. The emergence of computer-aided fringe analysis and phase-shifting techniques have simplified considerably the quantative real-time measurements of object shapes and deformations. The last two chapters provide a reasonably detailedoverview of full-field holographic methods for the measurement of shapes, displacements, dervatives, difference displacements and vibrations.
Download or read book New Techniques in Digital Holography written by Pascal Picart and published by John Wiley & Sons. This book was released on 2015-02-23 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: A state of the art presentation of important advances in the field of digital holography, detailing advances related to fundamentals of digital holography, in-line holography applied to fluid mechanics, digital color holography, digital holographic microscopy, infrared holography, special techniques in full field vibrometry and inverse problems in digital holography
Download or read book Progress in Optics written by and published by Elsevier. This book was released on 1980-01-15 with total page 377 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progress in Optics
Download or read book Optical Methods of Measurement written by Rajpal Sirohi and published by CRC Press. This book was released on 2018-09-03 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical Methods of Measurement: Wholefield Techniques, Second Edition provides a comprehensive collection of wholefield optical measurement techniques for engineering applications. Along with the reorganization of contents, this edition includes a new chapter on optical interference, new material on nondiffracting and singular beams and their applications, and updated bibliography and additional reading sections. The book explores the propagation of laser beams, metrological applications of phase-singular beams, various detectors such as CCD and CMOS devices, and recording materials. It also covers interference, diffraction, and digital fringe pattern measurement techniques, with special emphasis on phase measurement interferometry and algorithms. The remainder of the book focuses on theory, experimental arrangements, and applications of wholefield techniques. The author discusses digital hologram interferometry, digital speckle photography, digital speckle pattern interferometry, Talbot interferometry, and holophotoelasticity. This updated book compiles the major wholefield methods of measurement in one volume. It provides a solid understanding of the techniques by describing the physics behind them. In addition, the examples given illustrate how the techniques solve measurement problems.
Download or read book A Numerical Simulation of the Quasi heterodyne Technique for Double pulsed Holographic Vibration Measurements written by V. B. McKee and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Basics of Holography written by P. Hariharan and published by Cambridge University Press. This book was released on 2002-03-14 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: An excellent introduction to holography for students and researchers in science and engineering.
Download or read book Two wavelength Spatial heterodyne Holography written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Systems and methods are described for obtaining two-wavelength differential-phase holograms. A method includes determining a difference between a filtered analyzed recorded first spatially heterodyne hologram phase and a filtered analyzed recorded second spatially-heterodyned hologram phase.
Download or read book The Shock and Vibration Bulletin written by and published by . This book was released on 1987 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vibration Analysis of Holographic and Conventional Interferometry written by M. A. Monahan and published by . This book was released on 1967 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes two relatively new and useful optical techniques for measuring deformation of surfaces. Verifies results of holographic vibration analysis by comparison of results obtained with modified Twyman-Green interferometer. The hologram has the advantage of providing contour map of vibration amplitude of entire surface for particular frequency and drive, whereas more conventional techniques can be used to investigate only one point on surface at a time. Neither method requires attachment of sensors to surface being measured, and both may be applied to surfaces submerged in transparent liquids. (Author).
Download or read book Vibration Analysis and Nondestructive Testing Using Holographic Techniques written by and published by . This book was released on 1978 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Real-time holograms were made of Aluminum rectangular plates. The plates were cyclically vibrated with a piezoelectric driver to allow the fundamental frequencies to be measured and the mode shapes observed. These results were compared with theoretical frequency calculations. The plates were flawed by three different methods, and real-time holograms were again made. The resonant frequencies of each plate were recorded, and each mode shape was observed. A comparison between the plates before and after the flaws was made to determine the applicability of holography to the nondestructive testing of vibrating objects. Results indicate that holographic nondestructive testing (HNDT) of vibrating objects shows great promise for future applications. (Author).
Download or read book The Shock and Vibration Digest written by and published by . This book was released on 1986 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1990 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Selected Papers on Holographic Interferometry written by R. S. Sirohi and published by SPIE-International Society for Optical Engineering. This book was released on 2001 with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
