Structural Failure Analysis And Prediction Methods For Aerospace Vehicles And Structures
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Structural Failure Analysis and Prediction Methods for Aerospace Vehicles and Structures
Author | : Sook-Ying Ho |
Publsiher | : Bentham Science Publishers |
Total Pages | : 194 |
Release | : 2010 |
Genre | : Technology & Engineering |
ISBN | : 9781608050246 |
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This book deals with structural failure (induced by mechanical, aerodynamic, acoustic and aero-thermal, loads, etc.) of modern aerospace vehicles, in particular high-speed aircraft, solid propellant rocket systems and hypersonic flight vehicles, where structural integrity, failure prediction and service life assessment are particularly challenging, due to the increasingly more demanding mission requirements and the use of non-traditional materials, such as non-metallic composites, in their construction. Prediction of the complex loading environment seen in high-speed operation and constitutive / fracture models which can adequately describe the non-linear behaviour exhibited by advanced alloys and composite materials are critical in analyzing the non-linear structural response of modern aerospace vehicles and structures. The state-of-the-art of the different structural integrity assessment and prediction methodologies (including non-destructive structural health monitoring techniques) used for the structural design, service life assessment and failure analysis of the different types of aerospace vehicles are presented. The chapters are written by experts from aerospace / defence research organizations and academia in the fields of solid mechanics, and structural mechanics and dynamics of aircraft, rocket and hypersonic systems. The book will serve as a useful reference document containing specialist knowledge on appropriate prediction methodologies for a given circumstance and experimental data acquired from multi-national collaborative programs.
Aircraft Sustainment and Repair
Author | : Rhys Jones,A.A. Baker,Neil Matthews,V K Champagne |
Publsiher | : Butterworth-Heinemann |
Total Pages | : 970 |
Release | : 2017-12-15 |
Genre | : Technology & Engineering |
ISBN | : 9780081005446 |
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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
Aerospace Materials and Material Technologies
Author | : N. Eswara Prasad,R.J.H. Wanhill |
Publsiher | : Springer |
Total Pages | : 557 |
Release | : 2016-11-07 |
Genre | : Technology & Engineering |
ISBN | : 9789811021435 |
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This book serves as a comprehensive resource on various traditional, advanced and futuristic material technologies for aerospace applications encompassing nearly 20 major areas. Each of the chapters addresses scientific principles behind processing and production, production details, equipment and facilities for industrial production, and finally aerospace application areas of these material technologies. The chapters are authored by pioneers of industrial aerospace material technologies. This book has a well-planned layout in 4 parts. The first part deals with primary metal and material processing, including nano manufacturing. The second part deals with materials characterization and testing methodologies and technologies. The third part addresses structural design. Finally, several advanced material technologies are covered in the fourth part. Some key advanced topics such as “Structural Design by ASIP”, “Damage Mechanics-Based Life Prediction and Extension” and “Principles of Structural Health Monitoring” are dealt with at equal length as the traditional aerospace materials technology topics. This book will be useful to students, researchers and professionals working in the domain of aerospace materials.
Aluminum Lithium Alloys
Author | : N Eswara Prasad,Amol Gokhale,R.J.H Wanhill |
Publsiher | : Butterworth-Heinemann |
Total Pages | : 608 |
Release | : 2013-09-20 |
Genre | : Technology & Engineering |
ISBN | : 9780124016798 |
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Because lithium is the least dense elemental metal, materials scientists and engineers have been working for decades to develop a commercially viable aluminum-lithium (Al-Li) alloy that would be even lighter and stiffer than other aluminum alloys. The first two generations of Al-Li alloys tended to suffer from several problems, including poor ductility and fracture toughness; unreliable properties, fatigue and fracture resistance; and unreliable corrosion resistance. Now, new third generation Al-Li alloys with significantly reduced lithium content and other improvements are promising a revival for Al-Li applications in modern aircraft and aerospace vehicles. Over the last few years, these newer Al-Li alloys have attracted increasing global interest for widespread applications in the aerospace industry largely because of soaring fuel costs and the development of a new generation of civil and military aircraft. This contributed book, featuring many of the top researchers in the field, is the first up-to-date international reference for Al-Li material research, alloy development, structural design and aerospace systems engineering. Provides a complete treatment of the new generation of low-density AL-Li alloys, including microstructure, mechanical behavoir, processing and applications Covers the history of earlier generation AL-Li alloys, their basic problems, why they were never widely used, and why the new third generation Al-Li alloys could eventually replace not only traditional aluminum alloys but more expensive composite materials Contains two full chapters devoted to applications in the aircraft and aerospace fields, where the lighter, stronger Al-Li alloys mean better performing, more fuel-efficient aircraft
Advanced Durability and Damage Tolerance Design and Analysis Methods for Composite Structures Lessons Learned from NASA Technology Development Programs
Author | : Charles E. Harris |
Publsiher | : Unknown |
Total Pages | : 42 |
Release | : 2003 |
Genre | : Airframes |
ISBN | : NASA:31769000649072 |
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Aluminum Lithium Alloys
Author | : B. Saha,R.J.H. Wanhill,N. Eswara Prasad,G. Gouda,K. Tamilmani |
Publsiher | : Elsevier Inc. Chapters |
Total Pages | : 608 |
Release | : 2013-09-20 |
Genre | : Technology & Engineering |
ISBN | : 9780128068540 |
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Airworthiness regulatory bodies are authorised and responsible for verifying and ensuring the safety and reliability of aircraft. There are many civil and military aviation organisations and regulatory bodies. The functions and responsibilities of several of these organizations are summarised in this chapter. Owing to the importance of aircraft structural fatigue, a survey of fatigue design philosophies is also given. This is followed by (i) a discussion of the airworthiness certification methodology for materials and structures, starting with the initial mill products and proceeding via incremental levels to the finished aircraft; and (ii) an example of material certification for an aluminium–lithium (Al-Li) alloy that is a candidate for use in the airframes of light combat aircraft (LCA).
Scientific and Technical Aerospace Reports
Author | : Anonim |
Publsiher | : Unknown |
Total Pages | : 456 |
Release | : 1995 |
Genre | : Aeronautics |
ISBN | : UIUC:30112005546491 |
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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.
Advanced Composites Structural Concepts and Materials Technologies for Primary Aircraft Structures
Author | : National Aeronautics and Space Administration (NASA) |
Publsiher | : Createspace Independent Publishing Platform |
Total Pages | : 110 |
Release | : 2018-07-17 |
Genre | : Electronic Book |
ISBN | : 1722919922 |
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Non-linear analysis methods were adapted and incorporated in a finite element based DIAL code. These methods are necessary to evaluate the global response of a stiffened structure under combined in-plane and out-of-plane loading. These methods include the Arc Length method and target point analysis procedure. A new interface material model was implemented that can model elastic-plastic behavior of the bond adhesive. Direct application of this method is in skin/stiffener interface failure assessment. Addition of the AML (angle minus longitudinal or load) failure procedure and Hasin's failure criteria provides added capability in the failure predictions. Interactive Stiffened Panel Analysis modules were developed as interactive pre-and post-processors. Each module provides the means of performing self-initiated finite elements based analysis of primary structures such as a flat or curved stiffened panel; a corrugated flat sandwich panel; and a curved geodesic fuselage panel. This module brings finite element analysis into the design of composite structures without the requirement for the user to know much about the techniques and procedures needed to actually perform a finite element analysis from scratch. An interactive finite element code was developed to predict bolted joint strength considering material and geometrical non-linearity. The developed method conducts an ultimate strength failure analysis using a set of material degradation models. Dorris, William J. and Hairr, John W. and Huang, Jui-Tien and Ingram, J. Edward and Shah, Bharat M. Unspecified Center AIRCRAFT STRUCTURES; COMPOSITE STRUCTURES; CURVED PANELS; FAILURE ANALYSIS; FINITE ELEMENT METHOD; FUSELAGES; MODULES; STRUCTURAL DESIGN; TARGETS; ADHESIVES; BOLTED JOINTS; DEGRADATION; JOINTS (JUNCTIONS); NONLINEARITY...