Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports PDF Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1346

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Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports PDF Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1346

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Book Description


A Review of the Air Force Materials Research and Development Program

A Review of the Air Force Materials Research and Development Program PDF Author:
Publisher:
ISBN:
Category : Materials
Languages : en
Pages : 200

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Book Description
Technical reports published by the Air Force Materials Laboratory during the period 1 July 1964 - 30 June 1965 are abstracted herein. Reports on research conducted by the Air Force Materials Laboratory personnel as well as that conducted on contract are included.

High Velocity Deformation of Solids

High Velocity Deformation of Solids PDF Author: K. Kawata
Publisher: Springer Science & Business Media
ISBN: 3642672086
Category : Technology & Engineering
Languages : en
Pages : 472

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Book Description


Fundamental Aspects of Dislocation Interactions

Fundamental Aspects of Dislocation Interactions PDF Author: G. Kostorz
Publisher: Elsevier
ISBN: 1483274926
Category : Technology & Engineering
Languages : en
Pages : 471

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Book Description
Fundamental Aspects of Dislocation Interactions: Low-Energy Dislocation Structures III covers the papers presented at a European Research Conference on Plasticity of Materials-Fundamental Aspects of Dislocation Interactions: Low-Energy Dislocation Structures III, held on August 30-September 4, 1992 in Ascona, Switzerland. The book focuses on the processes, technologies, reactions, transformations, and approaches involved in dislocation interactions. The selection first offers information on work softening and Hall-Petch hardening in extruded mechanically alloyed alloys and dynamic origin of dislocation structures in deformed solids. Discussions focus on stress-strain behavior in relation to composition, structure, and annealing; comparison of stress-strain curves with work softening theory; sweeping and trapping mechanism; and model of dipolar wall structure formation. The text then ponders on plastic instabilities and their relation to fracture and dislocation and kink dynamics in f.c.c. metals studied by mechanical spectroscopy. The book takes a look at misfit dislocation generation mechanisms in heterostructures and evolution of dislocation structure on the interfaces associated with diffusionless phase transitions. Discussions focus on dislocation representation of a wall of elastic domains; equation of equilibrium of an elastic domain; transformation of dislocations; and theoretical and experimental background. The selection is a valuable reference for readers interested in dislocation interactions.

Dislocation Dynamics and Plasticity

Dislocation Dynamics and Plasticity PDF Author: Taira Suzuki
Publisher: Springer Science & Business Media
ISBN: 364275774X
Category : Science
Languages : en
Pages : 237

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Book Description
In the 1950s the direct observation of dislocations became possible, stimulat ing the interest of many research workers in the dynamics of dislocations. This led to major contributions to the understanding of the plasticity of various crys talline materials. During this time the study of metals and alloys of fcc and hcp structures developed remarkably. In particular, the discovery of the so-called in ertial effect caused by the electron and phonon frictional forces greatly influenced the quantitative understanding of the strength of these metallic materials. Statis tical studies of dislocations moving through random arrays of point obstacles played an important role in the above advances. These topics are described in Chaps. 2-4. Metals and alloys with bcc structure have large Peierls forces compared to those with fcc structure. The reasons for the delay in studying substances with bcc structure were mostly difficulties connected with the purification techniques and with microscopic studies of the dislocation core. In the 1970s, these difficulties were largely overcome by developments in experimental techniques and computer physics. Studies of dislocations in ionic and covalent bonding materials with large Peierls forces provided infonnation about the core structures of dislocations and their electronic interactions with charged particles. These are the main subjects in Chaps. 5-7.

Peterson's Graduate Programs in Engineering & Applied Sciences, Aerospace/Aeronautical Engineering, Agricultural Engineering & Bioengineering, and Architectural Engineering 2011

Peterson's Graduate Programs in Engineering & Applied Sciences, Aerospace/Aeronautical Engineering, Agricultural Engineering & Bioengineering, and Architectural Engineering 2011 PDF Author: Peterson's
Publisher: Peterson's
ISBN: 0768934796
Category : Study Aids
Languages : en
Pages : 288

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Book Description
Peterson's Graduate Programs in Engineering & Applied Sciences, Aerospace/Aeronautical Engineering, Agricultural Engineering & Bioengineering, and Architectural Engineering contains a wealth of information on colleges and universities that offer graduate work these exciting fields. The institutions listed include those in the United States and Canada, as well as international institutions that are accredited by U.S. accrediting bodies. Up-to-date information, collected through Peterson's Annual Survey of Graduate and Professional Institutions, provides valuable information on degree offerings, professional accreditation, jointly offered degrees, part-time and evening/weekend programs, postbaccalaureate distance degrees, faculty, students, degree requirements, entrance requirements, expenses, financial support, faculty research, and unit head and application contact information. Readers will find helpful links to in-depth descriptions that offer additional detailed information about a specific program or department, faculty members and their research, and much more. In addition, there are valuable articles on financial assistance, the graduate admissions process, advice for international and minority students, and facts about accreditation, with a current list of accrediting agencies.

U.S. Government Research and Development Reports Index

U.S. Government Research and Development Reports Index PDF Author:
Publisher:
ISBN:
Category : Nuclear science abstracts
Languages : en
Pages : 1492

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Book Description


Electromagnetic Acoustic Transducers

Electromagnetic Acoustic Transducers PDF Author: Masahiko Hirao
Publisher: Springer
ISBN: 443156036X
Category : Technology & Engineering
Languages : en
Pages : 382

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Book Description
This second edition provides comprehensive information on electromagnetic acoustic transducers (EMATs), from the theory and physical principles of EMATs to the construction of systems and their applications to scientific and industrial ultrasonic measurements on materials. The original version has been complemented with selected ideas on ultrasonic measurement that have emerged since the first edition was released. The book is divided into four parts: PART I offers a self-contained description of the basic elements of coupling mechanisms along with the practical designing of EMATs for various purposes. Several implementations to compensate for EMATs’ low transfer efficiency are provided, along with useful tips on how to make an EMAT. PART II describes the principle of electromagnetic acoustic resonance (EMAR), which makes the most of EMATs’ contactless nature and is the most successful amplification mechanism for precise measurements of velocity and attenuation. PART III applies EMAR to studying physical acoustics. New measurements have emerged with regard to four major subjects: in situ monitoring of dislocation behavior, determination of anisotropic elastic constants, pointwise elasticity mapping (RUM), and acoustic nonlinearity evolution. PART IV deals with a variety of individual issues encountered in industrial applications, for which the EMATs are believed to be the best solutions. This is proven by a number of field applications.

Technical Abstract Bulletin

Technical Abstract Bulletin PDF Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 684

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Book Description


DISLOCATIONS AND MECHANICAL BEHAVIOUR OF MATERIALS

DISLOCATIONS AND MECHANICAL BEHAVIOUR OF MATERIALS PDF Author: M. N. SHETTY
Publisher: PHI Learning Pvt. Ltd.
ISBN: 8120346386
Category : Technology & Engineering
Languages : en
Pages : 991

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Book Description
Primarily intended for the senior undergraduate and postgraduate students of Metallurgical and Materials Engineering/Mechanical Engineering, the book begins with the description of elementary mechanical testing method and then moves on to the theory of elasticity, the micromechanics of high strain rate deformation phenomenon and quantitative methods of materials selection. Dislocation and their applications is the strength of this book. The topics such as creep, fatigue and fracture are comprehensively covered. The final chapter presents the principles of materials selection. The book contains numerous solved and unsolved examples to reinforce the understanding of the subject.