NASA Technical Memorandum PDF Download
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 230
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 230
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Author: J. Summerscales
Publisher: Springer Science & Business Media
ISBN: 9781851664689
Category : Technology & Engineering
Languages : en
Pages : 520
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 602
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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:
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Category : Engines
Languages : en
Pages : 232
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Author: J. Duke
Publisher: Springer Science & Business Media
ISBN: 1475719655
Category : Science
Languages : en
Pages : 348
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Finding and slzmg cracks and other crack-like discontinuities has been the center of attention for scientists and engineers developing and using nondestructive evaluation (NDE) technology. However, with advanced mate rials being "engineered" and used in critical structural components, a new for NDE has emerged. Whereas many traditional engineering materi challenge als fail due to the initiation and self-similar propagation of a crack, reinforced composite materials degrade and fail in a manner more analogously to the collapse of a structure. Consequently the NDE of such materials involves assessing the combined effect of the material's damaged condition rather than identifying and sizing single critical imperfection. In 1979 Alex Vary, seeking to address the challenge confronting the NDE of advanced fiber reinforced composite materials began work on a new method of materials characterization. Focusing on the problem of evaluating graphite fiber reinforcedl epoxy laminated plates; Vary used a piezoelectric transducer to excite a mechanical disturbance in a plate and, with a sensi tive piezoelectric transducer monitored the disturbance on the same surface of the plate. (Placing the transducers on the same surface was primarily for practical purpose but their displacement in the direction of anticipated service load was of fundamental significance!) To quantify this observation, he counted the number of excursions, of the resulting electrical signal, above a arbitrary voltage threshold; a procedure frequently used for acoustic emission signal analysis.
Author: R S Sharpe
Publisher: Butterworth-Heinemann
ISBN: 148316408X
Category : Technology & Engineering
Languages : en
Pages : 492
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Book Description
Quality Technology Handbook, Fourth Edition offers a wide discussion on technology and its related subtopics. After giving some information on its background, content, and authors, the book then informs the readers about the quality problem check-list and enumerates the questions one has to ask to ensure that a problem will be solved. This part is followed by a discussion on non-destructive testing (NDT) and the several committees formed for it, among which are the British National Committee and the Harwell NDT Center. The book also includes information on two organizations that are closely related to the topic, the Institute of Quality Assurance (IQA) and The Welding Institute (TWI). A directory of international organizations related to quality assurance and non-destructive testing is provided in the latter part of the text. The book serves as valuable reference to undergraduates or postgraduates of courses that are related to science and technology.
Author:
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Category : Composite materials
Languages : en
Pages : 58
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Category : Airframes
Languages : en
Pages : 728
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Author:
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ISBN:
Category : Acoustic emission
Languages : en
Pages : 460
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Author: Raymond F. Wegman
Publisher: Advancement of Materials and Process Engineering
ISBN:
Category : Composite materials
Languages : en
Pages : 136
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Book Description
