International Aerospace Abstracts PDF Download

Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1042

View

Book Description

Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 816

View

Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Author: G. Pluvinage
Publisher: Springer Science & Business Media
ISBN: 1402016093
Category : Technology & Engineering
Languages : en
Pages : 238

View

Book Description
A vast majority of failures emanate from stress concentrators such as geometrical discontinuities. The role of stress concentration was first highlighted by Inglis (1912) who gives a stress concentration factor for an elliptical defect, and later by Neuber (1936). With the progress in computing, it is now possible to compute the real stress distribution at a notch tip. This distribution is not simple, but looks like pseudo-singularity as in principle the power dependence with distance remains. This distribution is governed by the notch stress intensity factor which is the basis of Notch Fracture Mechanics. Notch Fracture Mechanics is associated with the volumetric method which postulates that fracture requires a physical volume. Since fatigue also needs a physical process volume, Notch Fracture Mechanics can easily be extended to fatigue emanating from a stress concentration.

Author:
Publisher:
ISBN:
Category : Metallurgy
Languages : en
Pages : 654

View

Book Description

Author: G. Pluvinage
Publisher: Springer Science & Business Media
ISBN: 9401008809
Category : Science
Languages : en
Pages : 361

View

Book Description
As Directors of this NATO Workshop, we welcome this opportunity to record formally our thanks to the NATO Scientific Affairs Division for making our meeting possible through generous financial support and encouragement. This meeting has two purposes: the first obvious one because we have collected scientists from East, far East and west to discuss new development in the field of fracture mechanics: the notch fracture mechanics. The second is less obvious but perhaps in longer term more important that is the building of bridges between scientists in the frame of a network called Without Walls Institute on Notch Effects in Fatigue and Fracture". Physical perception of notch effects is not so easy to understand as the presence of a geometrical discontinuity as a worst effect than the simple reduction of cross section. Notch effects in fatigue and fracture is characterised by the following fundamental fact: it is not the maximum local stress or stress which governs the phenomena of fatigue and fracture. The physic shows that a process volume is needed probably to store the necessary energy for starting and propagating the phenomenon. This is a rupture of the traditional "strength of material" school which always give the prior importance of the local maximum stress. This concept of process volume was strongly affirmed during this workshop.

Author: Don Montague
Publisher: Taylor & Francis
ISBN: 9780419199106
Category : Architecture
Languages : en
Pages : 472

View

Book Description
This dual-language dictionary lists over 20,000 specialist terms in both French and English, covering architecture, building, engineering and property terms. It meets the needs of all building professionals working on projects overseas. It has been comprehensively researched and compiled to provide an invaluable reference source in an increasingly European marketplace.

Author: Mircea Eliade
Publisher: Princeton University Press
ISBN: 9780691017648
Category : Health & Fitness
Languages : en
Pages : 564

View

Book Description
In this landmark book the renowned scholar of religion Mircea Eliade lays the groundwork for a Western understanding of Yoga, exploring how its guiding principle, that of freedom, involves remaining in the world without letting oneself be exhausted by such "conditionings" as time and history. Drawing on years of study and experience in India, Eliade provides a comprehensive survey of Yoga in theory and practice from its earliest foreshadowings in the Vedas through the twentieth century. The subjects discussed include Patañjali, author of the Yoga-sutras; yogic techniques, such as concentration "on a Single Point," postures, and respiratory discipline; and Yoga in relation to Brahmanism, Buddhism, Tantrism, Oriental alchemy, mystical erotism, and shamanism.

Author: North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Structures and Materials Panel. Meeting
Publisher:
ISBN: 9789283600374
Category : Airplanes
Languages : en
Pages : 190

View

Book Description

Author: Alok Sutradhar
Publisher: Springer Science & Business Media
ISBN: 3540687726
Category : Technology & Engineering
Languages : en
Pages : 276

View

Book Description
Symmetric Galerkin Boundary Element Method presents an introduction as well as recent developments of this accurate, powerful, and versatile method. The formulation possesses the attractive feature of producing a symmetric coefficient matrix. In addition, the Galerkin approximation allows standard continuous elements to be used for evaluation of hypersingular integrals. FEATURES • Written in a form suitable for a graduate level textbook as well as a self-learning tutorial in the field. • Covers applications in two-dimensional and three-dimensional problems of potential theory and elasticity. Additional basic topics involve axisymmetry, multi-zone and interface formulations. More advanced topics include fluid flow (wave breaking over a sloping beach), non-homogeneous media, functionally graded materials (FGMs), anisotropic elasticity, error estimation, adaptivity, and fracture mechanics. • Presents integral equations as a basis for the formulation of general symmetric Galerkin boundary element methods and their corresponding numerical implementation. • Designed to convey effective unified procedures for the treatment of singular and hypersingular integrals that naturally arise in the method. Symbolic codes using Maple® for singular-type integrations are provided and discussed in detail. • The user-friendly adaptive computer code BEAN (Boundary Element ANalysis), fully written in Matlab®, is available as a companion to the text. The complete source code, including the graphical user-interface (GUI), can be downloaded from the web site http://www.ghpaulino.com/SGBEM_book. The source code can be used as the basis for building new applications, and should also function as an effective teaching tool. To facilitate the use of BEAN, a video tutorial and a library of practical examples are provided.

Author: Barry M. Patchett
Publisher:
ISBN: 9781894038447
Category : Filler metal
Languages : en
Pages : 612

View

Book Description