Development of Stress Analysis by Holographic Interferometry PDF Download
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Author: Paul Marie De Larminat
Publisher:
ISBN:
Category : Holography
Languages : en
Pages : 350
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Book Description
Author: Paul Marie De Larminat
Publisher:
ISBN:
Category : Holography
Languages : en
Pages : 350
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Book Description
Author: Valeriĭ Pavlovich Shchepinov
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 512
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Book Description
In this unique book, Shchepinov and his colleagues introduce and discuss the development and application of the increasingly important technique; holographic and speckle interferometry employed in the investigation of structure and material deformation and fracture processes. The authors consider the main physical and metrological aspects of interferometry from the deformation analysis viewpoint, emphasizing the need for (and the difficulties in obtaining) high quality and accurate fringe patterns. The advantages and outstanding features of the techniques are discussed in the second part of the book and these are compared with conventional methods of experimental mechanics. The book is illustrated with numerous unique interferograms to demonstrate the various fringe patterns which must be quantitively interpreted to obtain strain and stress values with the required accuracy. All fringe patterns presented are primary sources of the corresponding displacement and strain distributions contained in the book. The results illustrate how holographic and speckle interferometry can be used for development in various scientific and applied subjects in the fields of solid and fracture mechanics. Written specifically for researchers and engineers specializing in the strength of structures and materials, this book will also serve to introduce students to the fundamentals of holographic and speckle interferometry and the way these methods can be applied in experimental mechanics.
Author: Stephen Phillip Engelstad
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Yuri I. Ostrovsky
Publisher: Springer
ISBN: 3540470689
Category : Science
Languages : en
Pages : 257
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Book Description
This monograph deals with diverse applications of holographic interferome try in experimental solid mechanics. Holographic interferometry has experienced a development of twenty years. It has enjoyed success and suffered some disappointments mainly due to early overestimation of its potential. At present, development of holo graphic interferometry is progressing primarily as a technique for quantita tive measurements. This is what motivated us to write this book - to ana lyze the quantitative methods of holographic interferometry. The fringe patterns obtained in holographic interferometry are graphi cally descriptive. In the general case, however, because they contain infor mation on the total vectors of displacement for points on the surface of a stressed body, the interpretation of these interferograms is much more complicated than in typical conventional interferometry. In addition, the high sensitivity of the method imposes new requirements on the loading of the objects under study. New approaches to designing loading fixtures are needed in many cases to ensure the desired loading conditions. The wealth of information obtained in holographic interferometry necessitates the use of modern computational mathematics. Therefore, practical implementation of the various methods of holographic interferometry must overcome sub stantial difficulties requiring adequate knowledge in diverse areas of science such as coherent optics, laser technology, mechanics, and applied mathe matics. Experimental methods play a significant role in solid mechanics.
Author: René Dändliker
Publisher:
ISBN:
Category :
Languages : en
Pages : 85
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Book Description
Author: Stephen Phillip Engelstad
Publisher:
ISBN:
Category : Strains and stresses
Languages : en
Pages : 154
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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: Werner Jüptner
Publisher: Springer Science & Business Media
ISBN: 3642837131
Category : Computers
Languages : en
Pages : 156
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Book Description
Internationally recognized experts in the field of holographic interferometric testing, X-ray testing, and structural analysis by finite element techniques have come together in ESPRIT project 898 to develop a system that integrates these techniques. This system acts as an external interface between the complementary nondestructive testing methods and computer based structural analysis. In the book the testing and analysis techniques are presented and compared with special emphasis on problems regarding their combination and integration. The architecture and the components of the interface system are described. Experiments proving the feasibility and applicability of the concepts are presented. The chapters of the book dealing with the different techniques are written by the individual partners of the project. A common test object is investigated by all techniques. The book helps the customer to select the testing and analysis method most suitable for his problem. It also presents the background for building up integrated testing equipment for analysis and control.
Author: Michael T. Smith
Publisher:
ISBN:
Category : Holographic interferometry
Languages : en
Pages : 90
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Book Description
The major characteristics and requirements of a glass submersible which would require experimental stress analysis have been discussed. The three dimensional characteristics of holography are described and holographic interferometry is proposed for stress analysis. The basic theory of holography and holographic interferometry was discussed and experimental techniques were described. The test specimens included a steel torsion specimen for development of interferometric techniques and glass rods with ground hemispherical ends for study of holographic interferometry in glass objects. Both double exposure and real time holographic interferometry were used to obtain interference fringes for different stress states in the torsion specimen. The fringes produced were rectilinear and directly proportional to the load. An equation for computing the angle of rotation of the specimen from the fringe pattern was developed. Experiments were conducted to develop optical configurations to properly illuminate glass objects for holographic reconstruction. The most valuable techniques were described and their advantages for holographic interferometry were discussed. Interference fringes were then obtained in glass objects proving the feasibility of using holographic interferometry for stress analysis of a glass-hulled deep submersible.
Author: J. A. Clark
Publisher:
ISBN:
Category :
Languages : en
Pages : 34
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Book Description
A simplified absolute retardation approach to photoelastic analysis is described as an alternative to the more commonly used relative retardation approach. Isochromatics and isopachics are presented as applications of the method to static and dynamic problems. (Author).
