A Technology Assessment of Laser Ultrasonics PDF Download
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 71
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Book Description
The terms Laser Ultrasonics (LU) and Laser based Ultrasonics (LBU) relate to a range of testing and measurement configurations that employ lasers both to generate and to detect ultrasonic signals at the surface of opaque materials or in the bulk of transparent media. The ability to perform ultrasonic measurements in a remote and non-contacting manner using laser methods has produced significant interest in this measurement technology from a range of users. Numerous demonstrations of the technology in university, government and industrial laboratories have shown the flexibility and promise of laser ultrasonics and have pointed to its potential limitations. Unlike conventional ultrasonic methods which have experienced broad use in a variety of applications (industrial quality control, materials process sensing, medical imaging, infrastructure inspection), laser based methods have been used primarily in research programs and in technology demonstrations. Unfortunately, even with successful demonstrations, the use of laser ultrasonics outside the research environment has not occurred. In part, the movement of this technology to broader application has been limited by the nature of laser ultrasonic technology development.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 71
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Book Description
The terms Laser Ultrasonics (LU) and Laser based Ultrasonics (LBU) relate to a range of testing and measurement configurations that employ lasers both to generate and to detect ultrasonic signals at the surface of opaque materials or in the bulk of transparent media. The ability to perform ultrasonic measurements in a remote and non-contacting manner using laser methods has produced significant interest in this measurement technology from a range of users. Numerous demonstrations of the technology in university, government and industrial laboratories have shown the flexibility and promise of laser ultrasonics and have pointed to its potential limitations. Unlike conventional ultrasonic methods which have experienced broad use in a variety of applications (industrial quality control, materials process sensing, medical imaging, infrastructure inspection), laser based methods have been used primarily in research programs and in technology demonstrations. Unfortunately, even with successful demonstrations, the use of laser ultrasonics outside the research environment has not occurred. In part, the movement of this technology to broader application has been limited by the nature of laser ultrasonic technology development.
Author: James Wagner
Publisher:
ISBN: 9781890596088
Category :
Languages : en
Pages : 51
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Book Description
Author: James Wagner
Publisher:
ISBN:
Category : Lasers
Languages : en
Pages : 84
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Book Description
Author: L.E Drain
Publisher: Routledge
ISBN: 1351435590
Category : Science
Languages : en
Pages : 462
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Book Description
The first book devoted to laser techniques in the generation and reception of ultrasonic waves in materials, Laser Ultrasonics: Techniques and Applications provides a full description of the state of the art in all fields involving both lasers and ultrasonics. This practical book focuses mainly on the possible applications of the techniques, yet th
Author: Baldev Raj
Publisher: Alpha Science Int'l Ltd.
ISBN: 9781842650660
Category : Medical
Languages : en
Pages : 400
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Book Description
This work covers the basics for an understanding of ultrasonics and its potential applications in important fields of science and technology. Transducers and Instrumentation are dealt in individual chapters due to their prime importance in ultrasonic applications. Topics covered are applications of ultrasound science and technology for materials characterization, NDT, underwater acoustics, medical ultrasound, and molecular interaction.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Ultrasonic nondestructive evaluation is an extremely powerful tool for characterizing materials and detecting defects. A majority of the ultrasonic nondestructive evaluation is performed with piezoelectric transducers that generate and detect high frequency acoustic energy. The liquid needed to couple the high frequency acoustic energy from the piezoelectric transducers restricts the applicability of ultrasonics. For example, traditional ultrasonics cannot evaluate parts at elevated temperatures or components that would be damaged by contact with a fluid. They are developing a technology that remotely generates and detects the ultrasonic pulses with lasers and consequently there is no requirement for liquids. Thus the research in laser-based ultrasound allows them to solve inspection problems with ultrasonics that could not be done before. This technology has wide application in many Lawrence Livermore National Laboratory programs, especially when remote and/or non-contact sensing is necessary.
Author: Donald O. Thompson
Publisher: Springer Science & Business Media
ISBN: 1461528488
Category : Technology & Engineering
Languages : en
Pages : 2393
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Book Description
These Proceedings, consisting of Parts A and B, contain the edited versions of most of the papers presented at the annual Review of Progress in Quantitative Nondestructive Evaluation held at the University of California San Diego, in La Jolla, California on July 19- July 24, 1992. The Review was organized by the Center for NDE at Iowa State University and the Ames Laboratory of the USDOE in cooperation with a number of organizations including the Air Force Wright Laboratory Materials Directorate, the American Society for Nondestructive Testing, the Center for NDE at Johns Hopkins University, the Department of Energy, the Federal Aviation Administration, the National Institute of Standards and Technology, the National Science Foundation IndustrylUniversity Cooperative Research Centers, and the Working Group in Quantitative NDE. This year's Review of Progress in QNDE was attended by approximately 475 participants from the U. S. and many foreign countries who presented over 380 papers. With such a large volume of work to review, the meeting was divided into 36 sessions with as many as four sessions running concurrently. The Review covered all phases of NDE research and development from fundamental investigations to engineering applications or inspection systems, and it included all methods of inspection science from acoustics to x-rays. During the last twenty years, the participants of the Review have contributed to its steady growth. Thanks to their efforts, the Review is today one of the largest and most significant gatherings of NDE researchers and engineers anywhere in the world.
Author: Sergey Nikitin
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
This PhD research work is devoted to the use of laser ultrasound in high-pressure physics. The research is done using the recently established technique of laser ultrasonic measurements in a diamond anvil cell which allows investigation of the sound propagation and determination of the acoustic wave velocities at ultrahigh pressures. Time domain Brillouin scattering was applied here to depth-profiling of polycrystalline aggregate of ice compressed in a diamond anvil cell to megabar pressures. The technique allowed examination of characteristic dimensions of elastic inhomogeneities and texturing of polycrystalline ice in the direction, normal to the diamond anvil surfaces with sub-micrometer spatial resolution via time-resolved measurements of variations in the propagation velocity of the acoustic pulse travelling in the compressed sample. It was applied to measure the acoustic velocities in H2O ice up to 84 Gpa. The developed imaging technique provides, for each crystallite (or a group of crystallites) in chemically homogeneous transparent aggregate, usable information on its orientation as well as on the value of the elastic modulus along the direction of the sound propagation. This extends the basis for a successful application of highly developed micromechanical models of solids deformation at mbar pressure. On long term, such experiments extended to earth's minerals and high or low temperatures would insure a significant progress in understanding of convection of the earth's mantle and thus evolution of this and other planets.
Author: Mami Matsukawa
Publisher: IOP Publishing Limited
ISBN: 9780750349345
Category : Medical
Languages : en
Pages : 0
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Book Description
This book provides a review of state-of-art technological developments in applied ultrasonics with a focus on recent advances in ultrasonic research, covering metrological applications, non-destructive evaluation, sensing, devices, and physics, as well as medical diagnosis and treatment. The first part of this book focuses on the physics of acoustic waves, and their propagation and addresses viscoelasticity, as well as metrological applications including laser ultrasonics. Part two reviews some recent developments of importance to industrial applications, whilst the final part introduces developments in biomedical applications. The book will be an essential resource and instructional guide to the field for a broad range of students, researchers, and engineers. The reader can readily understand the direction of research in the subject, appreciate the numerous possibilities of using ultrasound, and grasp the potential applications of the phenomenon and current challenges. Key Features: Encompasses fundamental physics and applications. Provides state-of-art technological coverage in applied ultrasonics Reviews recent research and applications in science, medicine and industrial settings. Provides an introductory overview for each chapter. Transfers key technologies, helping the reader to quickly acquire measurement skills.
Author: Dale Ensminger
Publisher: CRC Press
ISBN: 1000994953
Category : Science
Languages : en
Pages : 904
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Book Description
Updated, revised, and restructured to reflect the latest advances in science and applications, the fourth edition of this best-selling industry and research reference covers the fundamental physical acoustics of ultrasonics and transducers, with a focus on piezoelectric and magnetostrictive modalities. It then discusses the full breadth of ultrasonics applications involving low power (sensing) and high power (processing) for research, industrial, and medical use. This book includes new content covering computer modeling used for acoustic and elastic wave phenomena, including scattering, mode conversion, transmission through layered media, Rayleigh and Lamb waves and flexural plates, modern horn design tools, Langevin transducers, and material characterization. There is more attention on process monitoring and advanced nondestructive testing and evaluation (NDT/NDE), including phased array ultrasound (PAUT), long-range inspection, using guided ultrasonic waves (GUW), internally rotary inspection systems (IRIS), time-of-flight diffraction (TOFD), and acoustic emission (AE). These methods are discussed and applied to both metals and nonmetals using illustrations in various industries, including now additionally for food and beverage products. The topics of defect sizing, capabilities, and limitations, including the probability of detection (POD), are introduced. Three chapters provide a new treatment of high-power ultrasonics, for both fluids and solids, and again, with examples of industrial engineering, food and beverage, pharmaceuticals, petrochemicals, and other process applications. Expanded coverage is given to medical and biological applications, covering diagnostics, therapy, and, at the highest powers, surgery. Key Features Provides an overview of fundamental analysis and transducer technologies needed to design and develop both measurement and processing systems Considers applications in material characterization and metrology Covers ultrasonic nondestructive testing and evaluation and high-power ultrasonics, which involves interactions that change the state of material Highlights medical and biomedical applications of ultrasound, focusing on the physical acoustics and the technology employed for diagnosis, therapy, surgery, and research This book is intended for both the undergraduate and graduate scientists and engineers, as well as the working professional, who seeks to understand the fundamentals together with a holistic treatment of the field of ultrasonics and its diversity of applications.
