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Author : Anonim
Publisher : Unknown
Page : 128 pages
File Size : 40,9 Mb
Release : 2000
Category : Electronic
ISBN : OCLC:746481657
Author : P.K. Rastogi,D. Inaudi
Publisher : Unknown
Page : 664 pages
File Size : 47,8 Mb
Release : 2000
Category : Science
ISBN : UOM:39015049989034
This book covers a wide range of measurement techniques broadly referred to as Optical Metrology, with emphasis on their applications to nondestructive testing. If we look separately at each of the two terms making the generic name Optical Metrology, we find a link to two of the most distinctive aspects of humans: a particularly well developed sense of vision and a desire to classify things using numbers and rules. Of all our five senses, vision is certainly the most developed and the closest to the rational part of our brain. It can be argued that our memory is strongly dependent on images and the brain is particularly good at processing the stimuli received from these images to extract information. Measuring, sizing and counting are, on the other hand, among the fundamental building blocks of modern society. The use of abstract quantities like size, value or intensity has simplified the description of complex enquiry and is the basis of modern science and economy. Hence, it would seem natural that the combination of two such basic aspects should result in the birth of a new field of science. However, it is known that his has not been the case. Optical Metrology remains classified as a group of special techniques used mainly in niche applications. Optical Metrology may be rightly described as an ensemble of techniques in which fields such as physics, electrical and mechanical engineering, and computer science merge and blend in new ways. This book is intended as a tribute to the career of Professor Léopold Pflug. By looking back at his lifelong commitment to the application of optical metrology to the service of engineering sciences, more particularly devoted to the observation of the real behavior of structural components, one can retrace the major revolutions that have taken place in this domain. Starting his activity in 1971 as the head of the Laboratory for Stress Analysis at the EPFL in Switzerland, he first employed photoelasticity as a tool to improve the understanding of the real behavior of complex structures. However he soon recognized the necessity of working with the real materials used to build these structures instead of on replicas made of optically birefringent materials. He then focussed on the use of moiré techniques which sparked his fascination with laser-based holography and speckle-based methods. The advent of information technology led him to open up to the use of ESPI and digital image processing techniques. Finally, in the mid 1990s he became interested in the use of optical fibers as a tool for sensing deformations inside structures, not only on their surfaces as in the case of whole-field methods. It is interesting to note the parallel in the evolution of optical metrology vis à vis developments in other fields: the development of lasers led to holographic interferometry, the availability of frame-grabbers led to ESPI and the emergence of fiber optic communications opened the way to the development of fiber optic sensors. This puts in sharp perspective the strong dependence of optical metrology on the latest technology for its development. Also interesting to note is that all fields in optical metrology touched upon by Professor Pflug are still of great relevance, as shown by the contributions in this volume. This book is, however, not intended as a commemoration, rather as an occasion to review the trends and undercurrents that are driving the field of optical metrology, with emphasis on nondestructive testing. All the authors were asked to summarize the recent achievements in their respective fields and to speculate about the future. As a result it has become apparent that it is difficult although not impossible to spot general trends in these disparate fields. Optical metrology has considerably benefited from some of the most important innovations of the recent past: lasers, computers and fiber optics communication, all of which found their direct inspiration from the developments in the world of electronics. In recent years we have also witnessed a shift of power from states to corporations. This has created the need to produce quick results useful to industry. Optical nondestructive testing has certainly adapted to this evolution, and several contributions in this book show that the researchers in this field understand the importance of developing technology that can be used by the industry to solve specific problems. We should also not forget that optical nondestructive testing is essentially a "service technology" and should as such not only focus on serving its clients in the best possible way, but also should continually emphasize, extend and enhance its services to new users still unaware of its potential. Hopefully this book will help in spreading awareness of the potentials of optical metrology and in focusing on the challenges of the future.
Author : FeiJun Song
Publisher : SPIE-International Society for Optical Engineering
Page : 512 pages
File Size : 42,7 Mb
Release : 2000
Category : Technology & Engineering
ISBN : UOM:39015049648556
This selection of papers covers various aspects of upconversion lasers.
Author : Anonim
Publisher : Unknown
Page : 431 pages
File Size : 47,7 Mb
Release : 2010
Category : Nondestructive testing
ISBN : 0768034299
Author : Pramod K. Rastogi,Erwin Hack
Publisher : John Wiley & Sons
Page : 453 pages
File Size : 47,5 Mb
Release : 2013-03-11
Category : Science
ISBN : 9783527411115
Unique within the field for being written in a tutorial style, this textbook adopts a step-by-step approach to the background needed for understanding a wide range of full-field optical measurement techniques in solid mechanics. This method familiarizes readers with the essentials of imaging and full-field optical measurement techniques, helping them to identify the appropriate techniques and in assessing measurement systems. In addition, readers learn the appropriate rules of thumb as a guide to better experimental performance from the applied techniques. Rather than presenting an exhaustive overview on the subject, each chapter provides a concise introduction to the concepts and principles, integrates solved problems within the text, summarizes the essence at the end, and includes unsolved problems. With its coverage of topics also relevant for industry, this text is aimed at graduate students, researchers, and engineers involved in non-destructive testing for acoustics, mechanics, medicine, diagnosis on artwork and construction, and civil engineering.
Author : Warren J. McGonnagle
Publisher : CRC Press
Page : 394 pages
File Size : 49,9 Mb
Release : 1961
Category : Science
ISBN : 0677005008
Author : Zinoviy Nazarchuk,Leonid Muravsky,Dozyslav Kuryliak
Publisher : Springer Nature
Page : 415 pages
File Size : 40,5 Mb
Release : 2023-05-23
Category : Science
ISBN : 9789819912261
This book includes the description, modeling and realization of new optical metrology techniques for technical diagnostics of materials. Special attention is paid to multi-step phase shifting interferometry with arbitrary phase shifts between interferograms, phase shifting and correlation digital speckle pattern interferometry, optical-digital speckle correlation, and digital image correlation, as well as dynamic speckle patterns analysis. Optoacoustic techniques can be treated as a separate branch of optical metrology and can solve many problems of technical diagnostics, including detection and localization of subsurface defects in laminated composite materials. The utility of such techniques can be increased by illumination of the object via acoustic waves at certain frequencies. Hence, an effective theoretical approach to the modeling of an elastic wave field interaction with an interphase defect, and to defect visualization using dynamic speckle patterns, is also included in this book. The experimental proof of the proposed approaches was achieved using a specially created hybrid optical-digital system for detection of different subsurface defects. This book is intended for engineers, researchers and students engaged in the field of nondestructive evaluation of materials and technical diagnostics of structural elements, hybrid optical systems, speckle metrology and optoacoustic imaging techniques.
Author : Paolo G. Cielo
Publisher : SPIE-International Society for Optical Engineering
Page : 746 pages
File Size : 46,9 Mb
Release : 1997
Category : Business & Economics
ISBN : CORNELL:31924079815175
Contents of this volume include: on-line glossmeter for stainless steel sheets; in process optical measurement of micro profile on cold rolled steel plates; optical profile transducer; and optical profilers for surface roughness.
Author : Vistasp M. Karbhari
Publisher : Elsevier
Page : 716 pages
File Size : 52,7 Mb
Release : 2013-06-30
Category : Technology & Engineering
ISBN : 9780857093554
The increased use of polymer matrix composites in structural applications has led to the growing need for a very high level of quality control and testing of products to ensure and monitor performance over time. Non-destructive evaluation (NDE) of polymer matrix composites explores a range of NDE techniques and the use of these techniques in a variety of application areas. Part one provides an overview of a range of NDE and NDT techniques including eddy current testing, shearography, ultrasonics, acoustic emission, and dielectrics. Part two highlights the use of NDE techniques for adhesively bonded applications. Part three focuses on NDE techniques for aerospace applications including the evaluation of aerospace composites for impact damage and flaw characterisation. Finally, the use of traditional and emerging NDE techniques in civil and marine applications is explored in part four. With its distinguished editor and international team of expert contributors, Non-destructive evaluation (NDE) of polymer matrix composites is a technical resource for researchers and engineers using polymer matrix composites, professionals requiring an understanding of non-destructive evaluation techniques, and academics interested in this field. Explores a range of NDE and NDT techniques and considers future trends Examines in detail NDE techniques for adhesively bonded applications Discusses NDE techniques in aerospace applications including detecting impact damage, ultrasonic techniques and structural health monitoring
Author : Paolo G. Cielo
Publisher : Unknown
Page : 632 pages
File Size : 47,8 Mb
Release : 1988
Category : Science
ISBN : UOM:39015012765973
This book presents an extensive review of the optical- and laser-based techniques that are available for quality control and process monitoring in the industrial production environment. The physical principles of each technique are explained in simple terms, and their applicability to specific industrial needs is discussed on the basis of wide hands-on experience. A large number of practical applications to in-process industrial sensing and metrology are described, and more than onethousand references are included. Topics include on-line surface inspection, 3-D imaging, nondestructive testing, fiber-optic sensors, robot guidance, as well as spectroscopic and light-scattering process analyzers. Key Features * Describes a large number of practical applications to in-process industrial sensing and metrology * Includes more than one thousand references * Covers on-line surface inspection, 3-D imaging, nondestructive testing, fiber-optic sensors, robot guidance, and more
Author : Robert Erf
Publisher : Elsevier
Page : 461 pages
File Size : 55,5 Mb
Release : 2012-12-02
Category : Technology & Engineering
ISBN : 9780323149501
Holographic Nondestructive Testing presents a unified discussion of the principles and methods of holography and its application holographic nondestructive testing. The book discusses in detail the basic theoretical concepts, the experimental methods for recording holograms, and different specialized holographic techniques. Several kinds of holography are discussed in the beginning chapters such as continuous-wave holography, pulsed holography, and interferometric holography. Other topics covered in the book are holographic surface contouring, holographic correlation, and holographic vibration analysis. Microwave and acoustical holography are the major areas of interest in Chapters 9 and 10. The text serves as an important reference to both engineers and optical scientists.
Author : Anonim
Publisher : Unknown
Page : 752 pages
File Size : 44,5 Mb
Release : 1968
Category : Weights and measures
ISBN : STANFORD:36105130366128
Author : United States. National Bureau of Standards
Publisher : Unknown
Page : 828 pages
File Size : 43,5 Mb
Release : 1973
Category : Government publications
ISBN : UOM:39015079557420
Author : United States. National Bureau of Standards
Publisher : Unknown
Page : 744 pages
File Size : 53,8 Mb
Release : 1976
Category : Washington (D.C.)
ISBN : UCSD:31822042925271
Author : United States. National Bureau of Standards
Publisher : Unknown
Page : 748 pages
File Size : 53,8 Mb
Release : 1977
Category : Electronic
ISBN : UCAL:B4280892
