Proceedings of the Air Force Conference on Fatigue and Fracture of Aircraft Structures and Materials

Proceedings of the Air Force Conference on Fatigue and Fracture of Aircraft Structures and Materials PDF Author: Air Force Flight Dynamics Laboratory (U.S.)
Publisher:
ISBN:
Category : Airframes
Languages : en
Pages : 924

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Book Description
The document is comprised of papers presented at the Air Force Conference on Fatigue of Aircraft Structures and Materials, sponsored by the Air Force Flight Dynamics Laboratory (AFFDL) and the Air Force Materials Laboratory (AFML), Air Force Systems Command. The purpose of the Conference was to discuss technological advancements in fatigue and fracture theory. The Conference was comprised of ten technical sessions (including two panel discussions) entitled 'The Role of Materials in Structures'; 'Fundamentals I + II'; 'Criteria'; 'Fracture I + II'; 'Phenomena I + II'; 'Analysis'; 'Design and Service Experience'. A total of fifty-six technical papers were presented.

Proceedings of the Air Force Conference on Fatigue and Fracture of Aircraft Structures and Materials

Proceedings of the Air Force Conference on Fatigue and Fracture of Aircraft Structures and Materials PDF Author: Air Force Flight Dynamics Laboratory (U.S.)
Publisher:
ISBN:
Category : Airframes
Languages : en
Pages : 924

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Book Description
The document is comprised of papers presented at the Air Force Conference on Fatigue of Aircraft Structures and Materials, sponsored by the Air Force Flight Dynamics Laboratory (AFFDL) and the Air Force Materials Laboratory (AFML), Air Force Systems Command. The purpose of the Conference was to discuss technological advancements in fatigue and fracture theory. The Conference was comprised of ten technical sessions (including two panel discussions) entitled 'The Role of Materials in Structures'; 'Fundamentals I + II'; 'Criteria'; 'Fracture I + II'; 'Phenomena I + II'; 'Analysis'; 'Design and Service Experience'. A total of fifty-six technical papers were presented.

Mechanical Vibration and Shock Analysis, Fatigue Damage

Mechanical Vibration and Shock Analysis, Fatigue Damage PDF Author: Christian Lalanne
Publisher: John Wiley & Sons
ISBN: 1118618939
Category : Technology & Engineering
Languages : en
Pages : 368

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Book Description
Mechanical Vibration and Shock Analysis, Second Edition Volume 4: Fatigue Damage Fatigue damage in a system with one degree of freedom is one of the two criteria applied when comparing the severity of vibratory environments. The same criterion is also employed for a specification representing the effects produced by the set of vibrations imposed in a real-world environment. In this volume, which is devoted to the calculation of fatigue damage, the author explores the various hypotheses and models used to describe the behavior of material suffering fatigue and the laws of fatigue accumulation. He also considers the methods of counting response peaks, which are used to establish a histogram when it is impossible to use the probability density of the peaks obtained with a Gaussian signal. The expressions for mean damage and its standard deviation are established and other hypotheses are tested. The Mechanical Vibration and Shock Analysis five-volume series has been written with both the professional engineer and the academic in mind. Christian Lalanne explores every aspect of vibration and shock, two fundamental and extremely significant areas of mechanical engineering, from both a theoretical and practical point of view. The five volumes cover all the necessary issues in this area of mechanical engineering. The theoretical analyses are placed in the context of both the real world and the laboratory, which is essential for the development of specifications.

Fracture Control Procedures for Aircraft Structural Integrity

Fracture Control Procedures for Aircraft Structural Integrity PDF Author: Howard A. Wood
Publisher:
ISBN:
Category : Airframes
Languages : en
Pages : 92

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Book Description
The report reviews the application of applied fracture mechanics in the design, analysis and qualification of aircraft structural systems. Recent service experiences are cited. Current trends in high strength materials application are reviewed with particular emphasis on the manner in which fracture toughness and structural efficiency may affect the material selection process. General fracture control procedures are reviewed in depth with specific reference to the impact of inspectability, structural arrangement and material on proposed analysis requirements for safe crack growth. The relative impact on allowable design stress is indicated by example. Design criteria, material and analysis requirements for implementation of fracture control procedures are reviewed together with limitation in current available data techniques. A summary of items which require further study and attention is presented.

Testing for Prediction of Material Performance in Structures and Components

Testing for Prediction of Material Performance in Structures and Components PDF Author:
Publisher: ASTM International
ISBN:
Category :
Languages : en
Pages : 320

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Book Description


Naval Engineers Journal

Naval Engineers Journal PDF Author:
Publisher:
ISBN:
Category : Marine engineering
Languages : en
Pages : 624

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ICAF 95: Poster papers

ICAF 95: Poster papers PDF Author: J. M. Grandage
Publisher:
ISBN:
Category : Airframes
Languages : en
Pages : 456

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Testing for Prediction of Material Performance in Structures and Components

Testing for Prediction of Material Performance in Structures and Components PDF Author: Robert Samuel Shane
Publisher:
ISBN:
Category : Materials
Languages : en
Pages : 328

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Coden for Periodical Titles (Including Non-periodical Titles and Deleted Coden)

Coden for Periodical Titles (Including Non-periodical Titles and Deleted Coden) PDF Author: Franklin Institute (Philadelphia, Pa.). Science Information Service
Publisher:
ISBN:
Category : Periodicals
Languages : en
Pages : 190

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Materials Evaluation

Materials Evaluation PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 442

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The Early Detection of Fatigue Damage

The Early Detection of Fatigue Damage PDF Author: John F. Moore
Publisher:
ISBN:
Category : Aluminum
Languages : en
Pages : 180

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Book Description
The fatigue process of 1100-0 aluminum was studied by means of exoelectron emission and ultrasonic surface wave measurements, and correlated with metallographic examination. Measurement of exoelectrons was accomplished by emission counts, amplified by a Channeltron electron multiplier and integrated over short time intervals. It appears that very early in the fatigue process there is an exoelectron emission peak, whose intensity is related to the intensity of the applied stress, coinciding with initial surface layer slip. The emission event lasts not more than a few percent of the fatigue life. No emission occurs thenceforth until in the final stages of fatigue, just prior to failure, when another emission period is observed. It was further noted that, at least at room temperature, light stimulation is necessary for exoelectron emission from 1100-0 aluminum. Preliminary ultrasonic surface wave measurements disclose a change in material response at about 50 percent of the fatigue life, which so far could not be correlated with metallographic observations. (Author).