Ultrasonic Extrusion

Ultrasonic Extrusion PDF Author: William B. Tarpley
Publisher:
ISBN:
Category : Ceramics
Languages : en
Pages : 70

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Book Description

Ultrasonic Extrusion

Ultrasonic Extrusion PDF Author: William B. Tarpley
Publisher:
ISBN:
Category : Ceramics
Languages : en
Pages : 70

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Book Description


Ultrasonic and Advanced Methods for Nondestructive Testing and Material Characterization

Ultrasonic and Advanced Methods for Nondestructive Testing and Material Characterization PDF Author: Chi-hau Chen
Publisher: World Scientific
ISBN: 9812704094
Category : Medical
Languages : en
Pages : 682

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Book Description
Ultrasonic methods have been very popular in nondestructive testing and characterization of materials. This book deals with both industrial ultrasound and medical ultrasound. The advantages of ultrasound include flexibility, low cost, in-line operation, and providing data in both signal and image formats for further analysis. The book devotes 11 chapters to ultrasonic methods. However, ultrasonic methods can be much less effective with some applications. So the book also has 14 chapters catering to other or advanced methods for nondestructive testing or material characterization. Topics like structural health monitoring, Terahertz methods, X-ray and thermography methods are presented. Besides different sensors for nondestructive testing, the book places much emphasis on signal/image processing and pattern recognition of the signals acquired.

Ultrasonic Extrusion: Reduction in Vehicle and Plasticizer Requirements for Non-Clay Ceramics

Ultrasonic Extrusion: Reduction in Vehicle and Plasticizer Requirements for Non-Clay Ceramics PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 68

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Book Description
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

The Application of Ultrasonic Energy in the Deformation of Metals PDF 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).

TID.

TID. PDF Author:
Publisher:
ISBN:
Category : Energy development
Languages : en
Pages : 212

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Developments in the European Extrusion Industry

Developments in the European Extrusion Industry PDF Author: R. Hudson
Publisher: iSmithers Rapra Publishing
ISBN: 9781859570357
Category : Technology & Engineering
Languages : en
Pages : 194

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Book Description
This report provides the reader with not only a review of technology developments but also a consideration of end-use market factors.

Magnesium Technology 2011

Magnesium Technology 2011 PDF Author: Wim Sillekens
Publisher: Springer
ISBN: 3319482238
Category : Technology & Engineering
Languages : en
Pages : 649

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Book Description
The Magnesium Technology Symposium, which takes place every year at the TMS Annual Meeting & Exhibition, is one of the largest yearly gatherings of magnesium specialists in the world. Papers are presented in all aspects of the field, ranging from primary production to applications to recycling. Moreover, papers explore everything from basic research findings to industrialization. Magnesium Technology 2011 covers a broad spectrum of current topics, including alloys and their properties; cast products and processing; wrought products and processing; forming, joining, and machining; corrosion and surface finishing; ecology; and structural applications. In addition, you'll find coverage of new and emerging applications in such areas as biomedicine and hydrogen storage.

Functional Starch and Applications in Food

Functional Starch and Applications in Food PDF Author: Zhengyu Jin
Publisher: Springer
ISBN: 9811310777
Category : Technology & Engineering
Languages : en
Pages : 226

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Book Description
This book discusses functional starch and its applications in food, focusing on starches with possible health benefits or novel applications. Covering slowly digested starch, resistant starch, porous starch, starch microemulsions, microcrystalline starch and noncrystallization starch and their applications, this book provides a valuable reference for graduate students and research professionals in the food and chemical industries.

Nanocomposites

Nanocomposites PDF Author: Subbarayan Sivasankaran
Publisher: BoD – Books on Demand
ISBN: 1789850118
Category : Technology & Engineering
Languages : en
Pages : 232

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Book Description
To have unimaginably outstanding useful properties (physical, mechanical, electrical, optical, chemical, and magnetic) in a single material design is a highly challenging task in the material science community, which can be achieved through nanocomposites. These nanocomposites can be produced from all conventional materials, which include polymers, metals/alloys, and ceramics, by modifying their internal structures. Due to modification of the structures of all kinds of conventional materials, at either the nano or ultra-fine level, the materials exhibit superior performance, which is a boon for all fields of science. In general, nanocomposite materials can be manufactured by solid-state processing techniques, liquid metallurgy, ex-situ and in-situ powder metallurgy, and other basic science synthesis routes. Furthermore, the possibility of making environmentally friendly materials is also possible with nanotechnology. Therefore, to investigate and demonstrate developments in the field of nanocomposites, this book is targeted at all the scientific personnel working in this field.

U.S. Government Research Reports

U.S. Government Research Reports PDF Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 156

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Book Description