Corrosion And Widespread Fatigue Damage Of Critical Aircraft Structure
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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.
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.
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.
Damage Tolerance Of Metallic Aircraft Structures
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Author : Sérgio M. O. Tavares
language : en
Publisher: Springer
Release Date : 2018-08-06
Damage Tolerance Of Metallic Aircraft Structures written by Sérgio M. O. Tavares and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-08-06 with Technology & Engineering categories.
This book provides a state-of-the-art review of the fail-safe and damage tolerance approaches, allowing weight savings and increasing aircraft reliability and structural integrity. The application of the damage tolerance approach requires extensive know-how of the fatigue and fracture properties, corrosion strength, potential failure modes and non-destructive inspection techniques, particularly minimum detectable defect and inspection intervals. In parallel, engineering practice involving damage tolerance requires numerical techniques for stress analysis of cracked structures. These evolved from basic mode I evaluations using rough finite element approaches, to current 3D modeling based on energetic approaches as the VCCT, or simulation of joining processes. This book provides a concise introduction to this subject.
Fatigue Of Aircraft Structures
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Author : United States. Naval Air Systems Command
language : en
Publisher:
Release Date : 1966
Fatigue Of Aircraft Structures written by United States. Naval Air Systems Command and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1966 with categories.
Fatigue Of Aircraft Structures
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Author : W. Barrois
language : en
Publisher:
Release Date : 1963
Fatigue Of Aircraft Structures written by W. Barrois and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963 with Airframes categories.
Corrosion Risk Assessment Of Aircraft Structures
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Author : M. Liao
language : en
Publisher:
Release Date : 2004
Corrosion Risk Assessment Of Aircraft Structures written by M. Liao and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Air pilots categories.
This paper presents a comprehensive summary of IAR/NRC research on risk assessment of aging aircraft structures in the presence of corrosion and fatigue. Extensive test data, especially for fuselage splices containing corrosion and multiple site fatigue damage (MSD) and coupons cut from service exposed aircraft lap joints, have been generated under previous projects. Based on these test data, an empirical stochastic crack growth model was first developed to analyze the probabilistic fatigue characteristics of the splices. Risk analysis was then performed on the fuselage splices using the computer codes PRISM (Bombardier Aerospace, Inc.) and PROF (United States Air Force). Holistic life assessment methodology (HLAM), which aims to quantify structural integrity in the entire life cycle by addressing the interaction effects of corrosion and fatigue, has advanced considerably during the past five years. Risk analysis based on HLAM was carried out on the fuselage splices. The analytical results, which were obtained at different stages, are compared with the test results. It is shown that corrosion in lap joints, even at the levels less than the typical maintenance limit (i.e., 10% material loss), could significantly increase the risk level of structural failure.
Durability And Structural Integrity Of Airframes
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Author : International Committee on Aeronautical Fatigue. Symposium
language : en
Publisher:
Release Date : 1993
Durability And Structural Integrity Of Airframes written by International Committee on Aeronautical Fatigue. Symposium and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Airframes categories.
Investigation Of Fuselage Structure Subject To Widespread Fatigue Damage
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Author :
language : en
Publisher:
Release Date : 1996
Investigation Of Fuselage Structure Subject To Widespread Fatigue Damage written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Airframes categories.
Aircraft Sustainment And Repair
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Author : Rhys Jones
language : en
Publisher: Butterworth-Heinemann
Release Date : 2017-12-15
Aircraft Sustainment And Repair written by Rhys Jones and has been published by Butterworth-Heinemann this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-12-15 with Technology & Engineering categories.
Aircraft Sustainment and Repair is a one-stop-shop for practitioners and researchers in the field of aircraft sustainment, adhesively bonded aircraft joints, bonded composites repairs, and the application of cold spray to military and civil aircraft. Outlining the state-of-the-art in aircraft sustainment, this book covers the use of quantitative fractography to determine the in-service crack length versus flight hours curve, the effect of intergranular cracking on structural integrity and the structural significance of corrosion. The book additionally illustrates the potential of composite repairs and SPD applications to metallic airframes. Covers corrosion damage assessment and management in aircraft structures Includes a key chapter on U.S. developments in the emerging field of supersonic particle deposition (SPD) Shows how to design and assess the potential benefits of both bonded composite repairs and SPD repairs to metallic aircraft structures to meet the damage tolerance requirements inherent in FAA ac 20-107b and the U.S. Joint Services