The Application of Ultrasonic Energy in the Deformation of Metals PDF Download
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Author: Alan R. Rosenfield
Publisher:
ISBN:
Category : Metals
Languages : en
Pages : 88
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Book Description
On June 21 a symposium was sponsored by the Bureau of Naval Weapons on the application of ultrasonic energy in the deformation of metals. At this session, a number of investigators actively working in the field reported informally on the results of their research. The reports revealed that the results achieved by incorporating ultrasonic transducers into conventional metalforming and-cutting operations are sufficiently promising that the technique merits further attention. Data are available to indicate that application of ultrasonic vibrations during metal working can increase speeds, lower forces, and improve surface finishes. All of these results have been obtained without any observed difference in properties between ultrasonically and conventionally fabricated parts. (Author).
Author: Alan R. Rosenfield
Publisher:
ISBN:
Category : Metals
Languages : en
Pages : 88
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Book Description
On June 21 a symposium was sponsored by the Bureau of Naval Weapons on the application of ultrasonic energy in the deformation of metals. At this session, a number of investigators actively working in the field reported informally on the results of their research. The reports revealed that the results achieved by incorporating ultrasonic transducers into conventional metalforming and-cutting operations are sufficiently promising that the technique merits further attention. Data are available to indicate that application of ultrasonic vibrations during metal working can increase speeds, lower forces, and improve surface finishes. All of these results have been obtained without any observed difference in properties between ultrasonically and conventionally fabricated parts. (Author).
Author: W. H. Frandsen
Publisher:
ISBN:
Category :
Languages : en
Pages : 10
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Book Description
Intense ultrasound having power levels up to 100 w/sq cm at 20 kc is used in studies of mechanisms of metal deformation and treatment. To provide accurate quantitative information about the underlying experimental conditions, Part 1 of this progress report describes detailed investigations of modes of propagation of intense ultrasonic stress waves in rods and bars. Part 2 will be concerned with measurements of conversion of acoustic energy into heat and kinetic energy of lattice imperfections. Parts 3 and 4 will illustrate experiments in which high strain rate tensile tests, and intense pulsed ultrasound were applied. A discussion of ultrasonic metal deformation will be given in the final Part 5 along with a comparison of our observations with results and viewpoints from other reports on this subject. (Author).
Author: B. Langenecker
Publisher:
ISBN:
Category :
Languages : en
Pages : 12
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Book Description
High-intensity ultrasound at 20 kc/sec is used in studies of mechanisms of metal deformation and treatment. Quantitative details about the experimental conditions are provided in the five parts of this report: (1) modes of intense ultrasonic stress waves in rods and bars, (2) conversion of acoustic energy into heat, (3) applications of ultrasound at high-strain-rate tensile tests, (4) measurements of internal friction during high-intensity ultrasonic radiation of metals, and (5) discussion of ultrasonic metal deformation along with a comparison between our observations and other reports on the subject of ultrasonic metal forming processes. (Author).
Author: Aeroprojects Incorporated
Publisher:
ISBN:
Category : Ceramic powders
Languages : en
Pages : 80
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Book Description
Author: B. Langenecker
Publisher:
ISBN:
Category :
Languages : en
Pages : 57
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Book Description
High-intensity ultrasound at 20 kc/sec is used in studies of mechanisms metal deformation and treatment. Quantitative details ab6ut the experimental conditions are providedin the five parts of this report: (1) modes of intense ultrasonic stress waves in rods and bars, (2) conversion of acoustic energy into heat, (3) applications of ultrasound at high-strain-rate tensile tests, (4) measurements of internal friction during high-intensity ultrasonic radiation of metals, and (5) discussion of ultrasonic metal deformation along with a comparison between our observations and other reports on the subject of ultrasonic metal forming processes. (Author).
Author: V. P. Severdenko
Publisher: Springer
ISBN:
Category : Crafts & Hobbies
Languages : en
Pages : 230
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Book Description
Author: E. W. Ray
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Andrew Rusinko
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659140419
Category :
Languages : en
Pages : 168
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Book Description
Mechanical vibrations of ultrasonic frequency exert a considerable influence upon the mechanical properties of metals, in particular, their deformation characteristics. The following three phenomena are considered: ultrasonic softening, ultrasonic hardening and the influence of preliminary ultrasonic treatment upon the steady-state creep of metals. Ultrasonic softening takes place when a ultrasonic loading is superimposed upon a static one, which results in the decrease of static load needed to deform the metal. Ultrasonic hardening occurs during the sonication of annealed material without a static loading. The ultrasonic hardening manifests itself in the increase of the yield strength of material due to the defects of crystalline structure nucleated and developed in acoustic field. Ultrasonic treatment consists of the ultrasonic irradiation of material and subsequent annealing. Materials treated in such a way can offer a considerable resistance to creep deformation. However, this tendency is not a monotonic function of the preliminary sonification parameters. A new theory, the synthetic theory of irrecoverable deformation, is employed to model the phenomena discussed above.
Author: Susanta Kumar Sahoo
Publisher: CRC Press
ISBN: 1000227294
Category : Technology & Engineering
Languages : en
Pages : 232
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Book Description
Ultrasonic Welding of Metal Sheets covers various aspects of ultrasonic welding (USW) of metal sheets, including the discussion on modeling and numerical simulations of ultrasonic welding to improve this welding process and performance. This book aims to provide an accessible, comprehensive and up-to-date exposition of the various aspects of joining of dissimilar metal sheets ranging from its fundamentals thorough to metallurgical characteristics covering fundamental concepts, in-detailed explanation about the USW including its implementation, design criteria, work material, welding, thermo-mechanical and research scopes. The book is aimed at researchers, professionals and graduate students in manufacturing, welding, mechanical engineering. Features The ultrasonic spot welding of various metal sheets is described in simplified expression and concepts are elucidated by relevant illustrations. Discusses modeling and numerical simulations of ultrasonic welding to improve the ultrasonic welding process and performance As opposed to competition in the market, this title provides thorough clarification of ultrasonic spot welding of metal sheets with its applications.
Author: OV Abramov
Publisher: Routledge
ISBN: 1351440780
Category : Technology & Engineering
Languages : en
Pages : 700
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Book Description
This book presents a comprehensive description of the theory and physics of high-intensity ultrasound, as well as dealing with a wide range of problems associated with the industrial applications of ultrasound, mainly in the areas of metallurgy and mineral processing. The book is divided into three sections, with Part I introducing the reader to the theory and physics of high-intensity ultrasound. Topics in this section include the propagation of ultrasound in liquid media and related nonlinear phenomena, metal crystallization in an ultrasonic field, ultrasound propagation in solids, alterations in dislocational structure, and ultrasonic effects on solidified metal. In Part II the design of ultrasonic generators, mechanoacoustic radiators and other vibrational systems is considered, as well as the control of acoustic parameters when vibrations are passed into a processed medium. Part lll describes problems associated with various uses of high-intensity ultrasound in metallurgy, for example ore dressing or producing powders and cast composites. The applications of high-intensity ultrasound for metal shaping, thermal and thermochemical treatment, welding, cutting, refining, and surface hardening are also discussed here. This comprehensive monograph provides an invaluable source of information, which has been largely unavailable in the West until now. The author is very well known and respected internationally within the field of ultrasonics.
