Download or read book Short crack Growth Behaviour in Various Aircraft Materials written by and published by . This book was released on 1990 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: AGARD Report R-732 reviews the results of the first phase of an AGARD Cooperative Test Programme on the behaviour and growth of "short" fatigue cracks. That report describes the establishment of a common test method, means of data collection/analysis and crack growth modelling in an aircraft alloy AA2024-T3. The second and concluding phase of this Programme allowed participants to test various materials and loading conditions. The results of this second phase are described in this report. All materials exhibited a "short-crack" effect to some extent. The effect was much less evident in 4340 steel than in the other materials. For the aluminium, aluminium-lithium and titanium alloys, short cracks grew at stress-intensity factor ranges lower, in some cases much lower, than the thresholds obtained from long crack tests. Several laboratories used the same crack growth model to analyze the growth of short cracks. Reasonable agreement was found between measured and predicted short-crack growth rates and fatigue lives.

Download or read book Short Crack Growth Behaviour in Various Aircraft Materials Le Developpement Des Petites Fissures Dans Divers Materiaux Aeronautiques written by and published by . This book was released on 1990 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: That report describes; the establishment of a common test method, means of data collection/analysis and crack growth modeling in an aircraft alloy AA 2024-T3. The second and concluding phase of this Programme allowed participants to test various materials and loading conditions. The results of this second phase are described in this report. All materials exhibited a short- crack effect to some extent. The effect was much less evident in 4340 steel than in the other materials. For the aluminium, aluminium-lithium and titanium alloys, short cracks grew at stress-intensity factor ranges lower, in some cases much lower, than the thresholds obtained from long crack tests. Several laboratories used the same crack growth model to analyze the growth of short cracks. Reasonable agreement was found between measured and predicted short- crack growth rates and fatigue lives. Keywords: Crack propagation, Mathematical models, Data processing, Fatigue life, Fatigue tests, Aluminum, Aluminum alloys, Titanium alloys, Steels.

Download or read book Some Considerations on Short Crack Growth Behaviour in Aircraft Structures written by Howard A. Wood and published by . This book was released on 1983 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: The two papers included in this Report were presented at the 52nd Meetings of the Structures and Materials Panel as the first stage of a study of the problems encountered in predicting the behaviour of short cracks. The fracture mechanics approach is being used for fatigue life assessment and durability evaluation to aircraft structures. Conventional crack growth prediction methods applied to smaller crack length ranges have met limited success so far. Short cracks may grow somewhat faster than expected by predictions using fracture mechanics data obtained from long crack specimens. The behaviour of short cracks obviously is affected by some analysis and additional secondary loading effects not normally accounted for in this stress intensity determination but having likely effects in short crack growth. This Report was sponsored by the Structures and materials Panel of AGARD. (Author).

Download or read book Some Considerations on Short Crack Growth Behaviour in Aircraft Structures written by North Atlantic Treaty Organization. Advisory Group for Aeronautical Research and Development and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Behaviour of Short Cracks in Airframe Components written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development and published by . This book was released on 1983 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aging of U S Air Force Aircraft written by National Research Council and published by National Academies Press. This book was released on 1997-10-30 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Small crack Test Methods written by James M. Larsen and published by ASTM International. This book was released on 1992 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reviews the most recent methods for testing small cracks in a variety of materials, providing detailed quantitative information on necessary procedures for data acquisition. Emphasizes the characterization of small, three-dimensional fatigue cracks, initiated either naturally or artificially. The ei

Download or read book Fatique and Fracture Mechanics written by Gary R. Halford and published by ASTM International. This book was released on 2000 with total page 551 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fatigue Crack Growth Under Variable Amplitude Loading written by J. Petit and published by Springer. This book was released on 1988-12-31 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book AGARD Index of Publications written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development and published by . This book was released on 1989 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Behaviour of Short Cracks in Airframe Components Conference Proceedings of the Meeting of the AGARD Structures and Materials Panel 55th Held at Toronto Canada on 19 24 September 1982 written by ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT NEUILLY-SUR-SEINE (France) and published by . This book was released on 1983 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents: Mechanics And Physics Of The Growth Of Small Cracks; Fatigue Damage Mechanisms And Short Crack Growth; An Assessment Of The Importance Of Small Crack Growth To Aircraft Design; Use Of Small Crack Data To Bring About And Quantify Improvements To Aircraft Structural Integrity; Small Cracks Detection By NDI; A Nonlinear Fracture Mechanics Approach To The Growth Of Small Cracks; Damage Tolerance Evaluation Of Structures With Small Cracks; Fracture Mechanics Analysis Of Short Cracks At Loaded Holes; Lifetime Prediction Methods For Corner Cracks At Holes; Probabilistic Fracture Mechanics Analysis Methods For Structural Durability; The Effects Of Compressive Overloads On The Threshold Stress Intensity For Short Cracks; Crack Propagation At Short Crack Lengths Under Variable Amplitude Loading (2nd Report); Spectrum Effects On The Growth Of Short Cracks; A Study Of Small Crack Growth Under Transport Spectrum Loading; and Small Cracks In Large Forgings.

Download or read book Effects of Constraint on Crack Growth Under Aircraft Spectrum Loading written by and published by . This book was released on 1992 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fatigue Crack Growth Failure and Lifing Analyses for Metallic Aircraft Structures and Components written by Russell Wanhill and published by Springer. This book was released on 2019-02-19 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a concise discussion of fatigue crack growth (FCG) failure and lifing analysis methods for metallic aircraft structures and components. After a reasonably concise historical review, surveys are made of (i) the importance of fatigue for aircraft structural failures and the sources of fatigue nucleation and cracking, (ii) contemporary FCG lifing methods, and (iii) the Quantitative Fractography (QF) required for determining the actual FCG behaviour. These surveys are followed by the main part of the book, which is a discussion, using case histories, of the applicabilities of Linear Elastic Fracture Mechanics (LEFM) and non-LEFM methods for analysing service fatigue failures and full- and sub-scale test results. This discussion is derived primarily from the experiences of the Defence Science and Technology Group in Melbourne, Australia, and the Netherlands Aerospace Centre, Marknesse, the Netherlands.

Download or read book Damage and Fatigue Crack Growth of Aircraft Materials and Structures written by J. Schijve and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1991-03 with total page 1104 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aerospace Materials and Material Technologies written by N. Eswara Prasad and published by Springer. This book was released on 2016-11-07 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.