Download or read book A Pulse Method for Measuring Ultrasonic Absorption in Gases written by Winard Lee Wilhoyte and published by . This book was released on 1961 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Ultrasonic Wave Absorption Measurement in Gas Media by Pulse Technique written by Paul Peihon Lin and published by . This book was released on 1961 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sound Absorption Measurements in Gases written by Helene Narayana and published by . This book was released on 1966 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Apparatus was built for the purpose of measuring the absorption of sound by the pulse technique in gases at low temperatures. The fixed frequency of operation was 3 Mc/sec, and by varying the pressure of gas,, absorption measurements were made at a frequency-to-pressure ratio ranging from 3 to 45 Mc/sec-atm. No reports appear in the literature about the use of the pulse technique at low temperatures. The instrument was tested for proper operation by measuring the absorption of sound in helium both at room temperature and at liquid nitrogen temperature. The absorption of ultrasonic waves was measured, at liquid nitrogen temperature, in normal hydrogen and in a para.-enriched mixture of hydrogen. The theory of sound absorption in fluids is summarized? the first part of the treatment deals with the classical absorption due to viscosity and thermal conductivity, while the second part deals with relaxational absorption due to a slowness of energy exchange between the translational and the internal degrees of freedom of a gas molecule. The review of the theory given here is more general than is customarily given on work in gases. The results are discussed and compared with similar results obtained by different techniques at different temperatures. The relaxation time for the 0-> 2 transition in hydrogen at 76.7 °K is found to be approximately 2.1 -8 X 10 sec. Measurements both in normal hydrogen and in para-enriched hydrogen yield the same value of the relaxa tion time; this is in contrast to the results of Sluijter., Knaap and Beenakker. The theories for calculation of relaxation times are not precise enough to shed light on this discrepancy.
Download or read book The Measurement of Ultrasonic Absorption and Velocity in Liquids Using a Pulse Technique written by R. Bird and published by . This book was released on 1949 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ultrasonic Absorption Measurements in Some Electrolytes by Means of a Pulse Method written by Melvin Ward Dill and published by . This book was released on 1955 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Development of a Pulse System for Measuring Ultrasonic Absorption in Liquids written by Melvin Ward Dill and published by . This book was released on 1952 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gas Temperature Measurements by Ultrasonic Pulse Method written by Thomas Paul Rona and published by . This book was released on 1955 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Concerning the Pulse Method of Measuring Ultrasonic Attenuation in Solids written by R. L. Roderick and published by . This book was released on 1950 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 30 230 Mc s Pulse Technique for Ultrasonic Absorption Measurements in Liquid written by J. H. ANDREAE and published by . This book was released on 1962 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physical Acoustics and Metrology of Fluids written by Martin Trusler and published by CRC Press. This book was released on 2020-11-25 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: The interaction of sound waves with the medium through which they pass can be used to investigate the thermophysical properties of that medium. With the advent of modern instrumentation, it is now possible to determine the speed and absorption of sound with extremely high precision and, through the dependence of those quantities on variables like temperature, pressure, and frequency to gain a sensitive measure of one or more properties of fluid. This has led to renewed interest in such measurements and in the extraction of thermophysical properties of gases and liquids there from. Physical Acoustics and Metrology of Fluids describes both how to design experiments to achieve the highest possible accuracy and how to relate the quantities measured in those experiments to the thermophysical properties of the medium. A thorough theoretical examination of the alternative experimental methods available is designed to guide the experimentalist toward better and more accurate methods. This theoretical analysis is enhanced and complemented by an in-depth discussion of practical experimental techniques and the problems inherent within them. Bringing together the fields of thermodynamics, kinetic theory, fluid mechanics, and theoretical acoustics, plus a wealth of information about practical instruments, this book represents an essential reference on the design and execution of valuable experiments in fluid metrology and physical acoustics.
Download or read book The Propagation of Ultrasonic Waves in Gas containing Suspensions written by Natalia Morkun and published by Cambridge Scholars Publishing. This book was released on 2019-01-08 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the results of research in the field of automated systems for the monitoring and control of technological processes of mining production. It offers the first mathematical description of Lamb waves’ propagation processes on surfaces in contact with randomly heterogeneous media (gas-containing suspensions). It is also the first book to explore the analytical dependencies of the attenuation values of Lamb and volume ultrasound waves on the number, size, density, and other characteristics of heterogeneous media during their natural and specially organized movements.
Download or read book A Critical Evaluation of the Use of Ultrasonic Absorption for Determining High temperature Gas Properties written by Warren F. Ahtye and published by . This book was released on 1968 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1965 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optical Generation and Detection of Acoustic Pulse Profiles in Gases for Novel Ultrasonic Absorption Spectroscopy written by A. C. Tam and published by . This book was released on 1984 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: We demonstrate a new all-optical, frequency-multiplexed and fast technique for gas-phase ultrasonic absorption spectroscopy. A pulsed laser produces a short-duration acoustic pulse in the gas sample, and the acoustic pulse profiles at two distances are monitored by focused continuous probe beams. Fourier decompositions of these probe deflection signals provide the absorption spectrum, and examples for CO2 + H2O mixture are given Ultrasonic propagation speeds in the MHz regime are also obtained for several gases.
Download or read book Ultrasonics written by Dale Ensminger and published by CRC Press. This book was released on 2011-09-19 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent advances in power electronics greatly benefit the multidisciplinary field of modern ultrasonics. More powerful, compact, and versatile electronic chips and software enable new computer-based devices for real-time data capture, storage, analysis, and display and advance the science and technology employed in commercial systems and applications of ultrasound. Reviewing the scientific basis behind these improvements, Ultrasonics: Fundamentals, Technologies, and Applications, Third Edition discusses them in detail, with new and additional figures and references, offering a completely revised and expanded examination of the state of modern ultrasonics. This new edition of a bestselling industry reference discusses the full breadth of ultrasonics applications for industrial and medical use and provides the fundamentals and insights gathered over the authors’ collective 80 years in the field. It provides a unique and comprehensive treatment of the science and technology behind the latest advancements and applications in both low and high power implementations. Coverage combines fundamental physics, a review and analysis of sensors and transducers, and the systems required for the full spectrum of industrial, nondestructive testing and medical and biomedical uses. It includes citations of numerous references and covers both main stream and the more unusual and obscure applications of ultrasound. Ultrasonics is ubiquitous in its industrial applications for sensing, NDT, and process measurements, in high power forms for processing and sonochemistry, as well as in medical procedures where it is used for diagnosis, therapy and surgery. This book provides a complete overview of the field, presenting numerous applications, cutting-edge advancements and improvements, additional figures and references, and a look at future directions.
Download or read book Physical Foundations of Technical Acoustics written by I. Malecki and published by Elsevier. This book was released on 2013-10-22 with total page 770 pages. Available in PDF, EPUB and Kindle. Book excerpt: Physical Foundations of Technical Acoustics discusses theoretical foundations of acoustical engineering. It is not so much a technical compendium as a systematic statement of physical laws so conceived that technologists might find in it all the information they need to become acquainted with the physical meaning and mathematical expression of phenomena they encounter in their work. To facilitate the acquirement of notions, which lie beyond a layman's grasp, the plan of narration adopted consists in beginning with the simplest idealized cases and then gradually moving on to the truest possible picture of real phenomena. Thus, the first part of the book, dealing with the acoustic field, begins with lossless fluid media, and passes then through perfectly elastic solid media to the real ones, showing losses and relaxations. In the second part, discussing the acoustical systems, the reader is led up from the simplest vibrating system with one degree of freedom to inhomogeneous spatial systems. Classical problems of theoretical acoustics are linked to the questions which appeared still to be the subjects of research. A special chapter has been written to deal with nonlinear acoustics, in consideration of continually growing applications of the acoustic fields of high intensity.
Download or read book Ultrasonic Phenomena and Methods of Measurement written by C. A. Komar and published by . This book was released on 1963 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
