Widespread Fatigue Damage In Military Aircraftadvisory Group For Aerospace Research And Development
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Widespread Fatigue Damage In Military Aircraftadvisory Group For Aerospace Research And Development
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Author :
language : en
Publisher:
Release Date : 1995
Widespread Fatigue Damage In Military Aircraftadvisory Group For Aerospace Research And Development written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with categories.
Widespread Fatigue Damage In Military Aircraft
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Author : North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Structures and Materials Panel. Meeting
language : en
Publisher:
Release Date : 1995
Widespread Fatigue Damage In Military Aircraft written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Structures and Materials Panel. Meeting and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Airframes categories.
Widespread Fatigue Damage In Military Aircraft L Endommagement En Fatigue Des Avions Militaires
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Author :
language : en
Publisher:
Release Date : 1995
Widespread Fatigue Damage In Military Aircraft L Endommagement En Fatigue Des Avions Militaires written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with categories.
A structure potentially susceptible to Widespread Fatigue Damage (WFD) is defined by the Industry Committee on Widespread Fatigue Damage, as a structure which has the characteristics of similar features operating at similar stresses where structural capability could be affected by similar cracking. The well-publicized 1988 incident of the Aloha Airlines Boeing 737, which lost a large section of fuselage structure in flight, ushered in the era of research into ageing aircraft. This incident was caused by a collinear series of fatigue cracks which suddenly linked to form a single critical crack, leading to the catastrophic failure. At the time of the Aloha incident, a large number of relatively high-life military aircraft were in service, mainly in the roles of air transport, air-to-air refueling and maritime reconnaissance. Maintaining the structural integrity of these aircraft in prolonged service requires consideration to be given to inspections for detecting possible multiple damage in its various forms: 'Multi-site' damage (MSD) occurs mainly on neighbouring elements (lines of attachment holes, for example) or as a result of a fabrication surface damage (a long, continuous, scratch, for example). Their coalescence can lead to a sudden loss of residual strength. The concept of 'resistance to damage' implies structures which are able to tolerate the presence of cracked elements by ensuring that cracks are slowly propagated and to tolerate the presence of broken elements by providing load path redundancy. On this basis, the strength of the remaining undamaged structure must be sufficient to ensure safety in flight during a specified operating period. The role of Damage Tolerance is to assure structural integrity through in-service directed inspections of critical structures.
Analysis Of Widespread Fatigue Damage In Aerospace Structures
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Author :
language : en
Publisher:
Release Date : 1999
Analysis Of Widespread Fatigue Damage In Aerospace Structures written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with categories.
This report summarizes research dealing with analyzing the effects of widespread fatigue damage on aircraft structural integrity. Results are described for determining how cracks nucleate by corrosion, fatigue, or fretting fatigue, and once formed, grow, coalesce and lead to final fracture. The research is conducted in the context of the aging aircraft issue, which focuses on determining procedures for ensuring the continued safety of aircraft that operate beyond their original design lifetimes.
Corrosion And Widespread Fatigue Damage Of Critical Aircraft Structure
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Author :
language : en
Publisher:
Release Date : 1997
Corrosion And Widespread Fatigue Damage Of Critical Aircraft Structure written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with categories.
The effect of corrosion and widespread fatigue damage (WFD) on the structural integrity of USAF aging aircraft could be detrimental to aircraft safety, readiness, and R & M (Reliability & Maintainability) costs. However, with the development and validation of appropriate structural life analysis tools and the supporting data, the effect of corrosion and WFD can be evaluated and therefore managed. But first, the supporting data will need to identify those structural elements which could cause a reduction in aircraft safety, readiness, or R & M when subject to corrosion or fatigue damage. The USAF aircraft fleets selected for consideration included the C/KC-135 Stratotanker, E-8C Joint STARS, C-9A/C Nightingale, C-130 Hercules, and C-5A/B Galaxy. The overall objective is to create a database, which is useful in identifying trends for the occurrence of corrosion and fatigue cracking damage to airframe Principal Structural Elements (PSEs). The database assembled under this effort contains individual records of inspection Reports and Repair Orders which have been obtained from standardized USAF damage and repair recording systems (such as OACIS, AIRS, REMIS, AND AFMC202) and from other USAF programs funded to collect specific airframe damage and repair records. This database is not intended to contain all the data, which might be used in a structural integrity evaluation, but it can be used to identify PSEs, which may need further consideration of their structural integrity capability. The trends developed provide real and repeatable evidence to assist in focusing improvement efforts where the largest gains can be made. The results from this project estimate the extent of corrosion and fatigue damage, which exists in the selected USAF aircraft systems. The Pareto trend format is used often to report the results as database record counts in decreasing order grouped by PSE type, location, and the defect type/severity.
Fatigue Load Monitoring Of Military Aircraft
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Author :
language : en
Publisher:
Release Date : 1970
Fatigue Load Monitoring Of Military Aircraft written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with categories.
Government Reports Announcements Index
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Author :
language : en
Publisher:
Release Date : 1993
Government Reports Announcements Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Science categories.
Fatigue Load Monitoring Of Military Aircraft
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Author : North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development
language : en
Publisher:
Release Date : 1970
Fatigue Load Monitoring Of Military Aircraft written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with Aiplanes, Military categories.
Aviation In Canada 1917 1918
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Author : Alan Sullivan
language : en
Publisher: Franklin Classics
Release Date : 2018-10-07
Aviation In Canada 1917 1918 written by Alan Sullivan and has been published by Franklin Classics this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-10-07 with categories.
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Aerospace Materials And Material Technologies
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Author : N. Eswara Prasad
language : en
Publisher: Springer
Release Date : 2016-11-23
Aerospace Materials And Material Technologies written by N. Eswara Prasad and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-11-23 with Technology & Engineering categories.
This book is a comprehensive compilation of chapters on materials (both established and evolving) and material technologies that are important for aerospace systems. It considers aerospace materials in three Parts. Part I covers Metallic Materials (Mg, Al, Al-Li, Ti, aero steels, Ni, intermetallics, bronzes and Nb alloys); Part II deals with Composites (GLARE, PMCs, CMCs and Carbon based CMCs); and Part III considers Special Materials. This compilation has ensured that no important aerospace material system is ignored. Emphasis is laid in each chapter on the underlying scientific principles as well as basic and fundamental mechanisms leading to processing, characterization, property evaluation and applications. This book will be useful to students, researchers and professionals working in the domain of aerospace materials.