Author: A. J. McCulloch
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 28
Book Description
The development of frequency-of-occurrence distributions or spectra of loadings for an aircraft structure requires the use of all available information on the aircraft's service and on the loadings peculiar to this service. Interest in these loadings is not new, but there is a growing appreciation of the need for detailed information on the load and stress histories that they produce. The need for such information has led to the collection of quantities of service loading data covering a wide range of operational conditions. However, use of the data has generally been restricted to assessments of the adequacy of design load levels and to analytical evaluations of the effects of service loadings on the life of the structure. The direct use of the data in test evaluations of structures is a fairly recent and rather controversial development. The need for this development will be brought out in a brief review of fatigue testing. This review will be followed by a brief discussion of the operational conditions to be considered in the construction of loading spectra. Selection of the most appropriate operational conditions is the first and a very important step in any fatigue evaluation. Inadequate selections can have a major effect on the interpretation of fatigue test results. The generally available data on particular classes of service loadings will then be described in some detail. This description will attempt, by supplying background data, to throw some light on the bases for generalized representations of service loading histories and so provide an indication of their utility. Finally, the use of defined operational conditions and of standardized loading spectra in the construction of test spectra to represent particular aircraft utilizations will be described and illustrated.
Development of Fatigue Loading Spectra for Testing Aircraft Components and Structures
Author: A. J. McCulloch
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 28
Book Description
The development of frequency-of-occurrence distributions or spectra of loadings for an aircraft structure requires the use of all available information on the aircraft's service and on the loadings peculiar to this service. Interest in these loadings is not new, but there is a growing appreciation of the need for detailed information on the load and stress histories that they produce. The need for such information has led to the collection of quantities of service loading data covering a wide range of operational conditions. However, use of the data has generally been restricted to assessments of the adequacy of design load levels and to analytical evaluations of the effects of service loadings on the life of the structure. The direct use of the data in test evaluations of structures is a fairly recent and rather controversial development. The need for this development will be brought out in a brief review of fatigue testing. This review will be followed by a brief discussion of the operational conditions to be considered in the construction of loading spectra. Selection of the most appropriate operational conditions is the first and a very important step in any fatigue evaluation. Inadequate selections can have a major effect on the interpretation of fatigue test results. The generally available data on particular classes of service loadings will then be described in some detail. This description will attempt, by supplying background data, to throw some light on the bases for generalized representations of service loading histories and so provide an indication of their utility. Finally, the use of defined operational conditions and of standardized loading spectra in the construction of test spectra to represent particular aircraft utilizations will be described and illustrated.
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 28
Book Description
The development of frequency-of-occurrence distributions or spectra of loadings for an aircraft structure requires the use of all available information on the aircraft's service and on the loadings peculiar to this service. Interest in these loadings is not new, but there is a growing appreciation of the need for detailed information on the load and stress histories that they produce. The need for such information has led to the collection of quantities of service loading data covering a wide range of operational conditions. However, use of the data has generally been restricted to assessments of the adequacy of design load levels and to analytical evaluations of the effects of service loadings on the life of the structure. The direct use of the data in test evaluations of structures is a fairly recent and rather controversial development. The need for this development will be brought out in a brief review of fatigue testing. This review will be followed by a brief discussion of the operational conditions to be considered in the construction of loading spectra. Selection of the most appropriate operational conditions is the first and a very important step in any fatigue evaluation. Inadequate selections can have a major effect on the interpretation of fatigue test results. The generally available data on particular classes of service loadings will then be described in some detail. This description will attempt, by supplying background data, to throw some light on the bases for generalized representations of service loading histories and so provide an indication of their utility. Finally, the use of defined operational conditions and of standardized loading spectra in the construction of test spectra to represent particular aircraft utilizations will be described and illustrated.
Development of Fatigue Loading Spectra
Author: John M. Potter
Publisher: ASTM International
ISBN: 0803111851
Category : Aluminum alloys
Languages : en
Pages : 242
Book Description
Publisher: ASTM International
ISBN: 0803111851
Category : Aluminum alloys
Languages : en
Pages : 242
Book Description
Fatigue in Aircraft Structures
Author: United States. Air Force. Air Research and Development Command
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 484
Book Description
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 484
Book Description
Structural Fatigue in Aircraft
Service Fatigue Loads Monitoring, Simulation, and Analysis
Author: P. R. Abelkis
Publisher: ASTM International
ISBN:
Category :
Languages : en
Pages : 291
Book Description
Publisher: ASTM International
ISBN:
Category :
Languages : en
Pages : 291
Book Description
Full-Scale Fatigue Testing of Components and Structures
Author: K. J. Marsh
Publisher: Butterworth-Heinemann
ISBN: 1483161382
Category : Technology & Engineering
Languages : en
Pages : 347
Book Description
Full-scale Fatigue Testing of Components and Structures presents the approaches to the testing of full-scale components or structures. The book begins by examining the necessity or desirability of full-scale fatigue testing. Subsequent chapters are devoted to the discussion of fatigue testing done on aircraft structures, railway components, helicopter rotor heads, artillery gun structures, and bridge components. The role of full-scale fatigue testing on automotive components and systems, structural testing in nuclear engineering, and the use of a structural fatigue testing laboratory for other tests are covered as well. Engineers, materials scientists, and researchers in the field of fatigue testing will find the book very useful.
Publisher: Butterworth-Heinemann
ISBN: 1483161382
Category : Technology & Engineering
Languages : en
Pages : 347
Book Description
Full-scale Fatigue Testing of Components and Structures presents the approaches to the testing of full-scale components or structures. The book begins by examining the necessity or desirability of full-scale fatigue testing. Subsequent chapters are devoted to the discussion of fatigue testing done on aircraft structures, railway components, helicopter rotor heads, artillery gun structures, and bridge components. The role of full-scale fatigue testing on automotive components and systems, structural testing in nuclear engineering, and the use of a structural fatigue testing laboratory for other tests are covered as well. Engineers, materials scientists, and researchers in the field of fatigue testing will find the book very useful.
Aircraft Sustainment and Repair
Author: Rhys Jones
Publisher: Butterworth-Heinemann
ISBN: 008100544X
Category : Technology & Engineering
Languages : en
Pages : 972
Book Description
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
Publisher: Butterworth-Heinemann
ISBN: 008100544X
Category : Technology & Engineering
Languages : en
Pages : 972
Book Description
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
A Guide for Fatigue Testing and the Statistical Analysis of Fatigue Data
Author: Committee E-9 Staff
Publisher:
ISBN: 9780803167025
Category :
Languages : en
Pages :
Book Description
Publisher:
ISBN: 9780803167025
Category :
Languages : en
Pages :
Book Description
Fatigue of Aircraft Structures
Author: United States. Naval Air Systems Command
Publisher:
ISBN:
Category :
Languages : en
Pages : 360
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 360
Book Description
Aging of U.S. Air Force Aircraft
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309174473
Category : Technology & Engineering
Languages : en
Pages : 124
Book Description
Many of the aircraft that form the backbone of the U.S. Air Force operational fleet are 25 years old or older. A few of these will be replaced with new aircraft, but many are expected to remain in service an additional 25 years or more. This book provides a strategy to address the technical needs and priorities associated with the Air Force's aging airframe structures. It includes a detailed summary of the structural status of the aging force, identification of key technical issues, recommendations for near-term engineering and management actions, and prioritized near-term and long-term research recommendations.
Publisher: National Academies Press
ISBN: 0309174473
Category : Technology & Engineering
Languages : en
Pages : 124
Book Description
Many of the aircraft that form the backbone of the U.S. Air Force operational fleet are 25 years old or older. A few of these will be replaced with new aircraft, but many are expected to remain in service an additional 25 years or more. This book provides a strategy to address the technical needs and priorities associated with the Air Force's aging airframe structures. It includes a detailed summary of the structural status of the aging force, identification of key technical issues, recommendations for near-term engineering and management actions, and prioritized near-term and long-term research recommendations.