Ultrasonic Extrusion
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Ultrasonic Extrusion
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Author : William B. Tarpley
language : en
Publisher:
Release Date : 1961
Ultrasonic Extrusion written by William B. Tarpley and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1961 with Ceramics categories.
Ultrasonic Extrusion Reduction In Vehicle And Plasticizer Requirements For Non Clay Ceramics
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Author :
language : en
Publisher:
Release Date : 1961
Ultrasonic Extrusion Reduction In Vehicle And Plasticizer Requirements For Non Clay Ceramics written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1961 with categories.
Earlier work on the ultrasonic extrusion of lead and aluminum has been extended to the cold extrusion of plasticized ceramic compositions, resulting in significant improvements in increased extrusion rate (more than 100-fold), decreased extrusion pressure (2 to 10 fold), and in extruded specimen properties. It has also been found possible to extrude materials which are normally nonextrudable because of their low plasticizer or water content. Fused, ground alumina could be ultrasonically extruded with 15% less water than the minimum content without ultrasonics, and only 40 to 60% of that used in normal commercial practice. Significant improvement in the strength of as-extruded shapes, as well as reduced shrinkage and deformation in drying and firing, resulted. Compositions normally using 3 w/o ammonium alginate as a plasticizer can be extruded with 0.2 w/o plastizer when ultrasonically activated. It has been postulated that the ultrasonic effects observed are derived from reduction of surface friction, shear thinning of the thixotropic systems, particle orientation, surface-film rupture, and wetting phenomena. As-extruded specimen improvement was evidenced by a smoother surface and freedom from cracks, tearing, and peeling. When steel dies were used, abrasion of the die surface sometimes caused a superficially discolored surface in nonultrasonic extrusions. The comparable ultrasonic extrusions showed little or no discoloration as the ultrasonic power level was increased. Ultrasonically extruded specimens which were fired in the same kiln loading as their corresponding controls show small but consistent increases in fired density. Water absorption was approximately 75% of the control. The highest moduli of rupture in the fired specimens were found in the ultrasonic specimens even though these required only 25% of the extrusion pressure of the controls.
The Application Of Ultrasonic Energy In The Deformation Of Metals
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Author : Alan R. Rosenfield
language : en
Publisher:
Release Date : 1963
The Application Of Ultrasonic Energy In The Deformation Of Metals written by Alan R. Rosenfield and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963 with Metals categories.
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).
Ultrasonic And Advanced Methods For Nondestructive Testing And Material Characterization
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Author :
language : en
Publisher:
Release Date :
Ultrasonic And Advanced Methods For Nondestructive Testing And Material Characterization written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
Power Ultrasonics
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Author : Juan A Gallego-Juárez
language : en
Publisher: Elsevier
Release Date : 2014-11-14
Power Ultrasonics written by Juan A Gallego-Juárez and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-11-14 with Science categories.
The industrial interest in ultrasonic processing has revived during recent years because ultrasonic technology may represent a flexible “green alternative for more energy efficient processes. A challenge in the application of high-intensity ultrasound to industrial processing is the design and development of specific power ultrasonic systems for large scale operation. In the area of ultrasonic processing in fluid and multiphase media the development of a new family of power generators with extensive radiating surfaces has significantly contributed to the implementation at industrial scale of several applications in sectors such as the food industry, environment, and manufacturing. Part one covers fundamentals of nonlinear propagation of ultrasonic waves in fluids and solids. It also discusses the materials and designs of power ultrasonic transducers and devices. Part two looks at applications of high power ultrasound in materials engineering and mechanical engineering, food processing technology, environmental monitoring and remediation and industrial and chemical processing (including pharmaceuticals), medicine and biotechnology. Covers the fundamentals of nonlinear propagation of ultrasonic waves in fluids and solids. Discusses the materials and designs of power ultrasonic transducers and devices. Considers state-of-the-art power sonic applications across a wide range of industries.
Nuclear Science Abstracts
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Author :
language : en
Publisher:
Release Date : 1966
Nuclear Science Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1966 with Nuclear energy categories.
Saline Water Conversion Report
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Author : United States. Office of Saline Water
language : en
Publisher:
Release Date : 1968
Saline Water Conversion Report written by United States. Office of Saline Water and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with Saline water conversion categories.
Micromanufacturing Of Metallic Materials
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Author : Jingwei Zhao
language : en
Publisher: MDPI
Release Date : 2021-01-13
Micromanufacturing Of Metallic Materials written by Jingwei Zhao and has been published by MDPI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-01-13 with Technology & Engineering categories.
Product miniaturization is a trend for facilitating product usage, enabling product functions to be implemented in microscale geometries, and aimed at reducing product weight, volume, cost and pollution. Driven by ongoing miniaturization in diverse areas, including medical devices, precision equipment, communication devices, micro-electromechanical systems and microsystems technology, the demands for micro metallic products have been tremendously increased. Such a trend requires the development of advanced technology for the micromanufacturing of metallic materials, with regard to producing high-quality micro metallic products that possess excellent dimensional tolerances, the required mechanical properties and improved surface quality. Micromanufacturing differs from conventional manufacturing technology in terms of materials, processes, tools, and machines and equipment, due to the miniaturization nature of the whole micromanufacturing system, which challenges the rapid development of micromanufacturing technology. Such a background has prompted and encouraged us to publish a scholarly book on the topic of the micromanufacturing of metallic materials, with the purpose of providing readers with a valuable document that can be used in the research and development of micromanufacturing technology. This book will be useful for both theoretical and applied research aimed at micromanufacturing technology, and will serve as an important research tool, providing knowledge to be returned to the community not only as valuable scientific literature, but also as technology, processes and productivities.
Thermoplastic Foam Processing
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Author : Richard Gendron
language : en
Publisher: CRC Press
Release Date : 2004-10-28
Thermoplastic Foam Processing written by Richard Gendron and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-10-28 with Technology & Engineering categories.
As researchers seek replacements for banned, ozone-depleting foaming agents, the authors of Thermoplastic Foam Processing: Principles and Development strive to develop a better understanding of foaming processes and find solutions for day-to-day practice. This book presents the latest research in foam extrusion and physical foaming agents with a st
Advances In Mechanical Engineering
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Author : Mark Zhou
language : en
Publisher: Trans Tech Publications Ltd
Release Date : 2011-03-28
Advances In Mechanical Engineering written by Mark Zhou and has been published by Trans Tech Publications Ltd this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-03-28 with Technology & Engineering categories.
The objective of the ICME 2011 conference was to provide a forum where researchers, educators, engineers and government officials, involved in the general area of Mechanical Engineering, could disseminate their latest research results and exchange views on the future research directions of the field. Volume is indexed by Thomson Reuters CPCI-S (WoS). The three-volume set includes over 389 peer-reviewed papers, grouped under the chapter headings: Materials Engineering and Manufacturing Process, and Mechanical Engineering and Automotive Engineering. This timely volume will be a useful source of new ideas.