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Author : C. M. Hudson
Publisher :
ISBN 13 :
Total Pages : 40 pages
Book Rating : 4.47/5 ( download)
Download or read book Fatigue-crack Propagation in Several Titanium and Stainless-steel Alloys and One Superalloy written by C. M. Hudson and published by . This book was released on 1964 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 570 pages
Book Rating : 4.6Z/5 ( download)
Download or read book NASA Technical Note written by and published by . This book was released on 1973 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : I. E. Figge
Publisher :
ISBN 13 :
Total Pages : 50 pages
Book Rating : 4.04/5 ( download)
Download or read book Crack Propagation, Delayed Failure, and Residual Static Strength of Titanium, Aluminum, and Stainless Steel Alloys in Aqueous Environments written by I. E. Figge and published by . This book was released on 1967 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : C. M. Hudson
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.56/5 ( download)
Download or read book Investigation of Fatigue-crack Growth Under Simple Variable-amplitude Loading written by C. M. Hudson and published by . This book was released on 1970 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: VARIABLE-AMPLITUDE FATIGUE-CRACK-GROWTH TESTS WERE CONDUCTED ON SIMPLE SHEET SPECIMENS MADE OF 7075-T6 ALUMINUM ALLOY. THE NUMBERS AND THE AMPLITUDES OF THE HIGH-LOAD CYCLES APPLIED IN THESE TESTS WERE SYSTEMATICALLY VARIED TO STUDY THEIR EFFECTS ON SUBSEQUENT LOW-LOAD FATIGUE-CRACK GROWTH. THE HIGH-LOAD CYCLES CONSISTENTLY DELAYED SUBSEQUENT FATIGUE-CRACK GROWTH AT LOWER LOAD LEVELS. FOR A GIVEN LOW-LOAD LEVEL, THE HIGHER THE PRECEDING HIGH-LOAD LEVEL WAS, THE GREATER THE DELAY IN CRACK PROPAGATION. FURTHERMORE, THE DELAY IN CRACK GROWTH INCREASED WITH INCREASING NUMBERS OF HIGH-LOAD CYCLES UP TO A LIMIT. ONE HIGH-LOAD CYCLE CAUSED APPROXIMATELY ONE-FOURTH OF THE MAXIMUM DELAY, AND TEN HIGH-LOAD CYCLES CAUSED APPROXIMATELY ONE-HALF OF THE MAXIMUM DELAY. THESE DELAYS PROBABLY RESULTED FROM RESIDUAL COMPRESSIVE STRESSES GENERATED IN THE MATERIAL IMMEDIATELY AHEAD OF THE CRACK TIP DURING THE APPLICATION OF THE HIGH-LOAD CYCLES. ELECTRON FRACTOGRAPHIC STUDIES SHOWED THAT A GIVEN STRESS LEVEL, FATIGUE CRACKS PROPAGATED MORE SLOWLY IMMEDIATELY AFTER THE APPLICATION OF A HIGH-LOAD CYCLE THAN THEY DID IMMEDIATELY BEFORE ITS APPLICATION. THIS LOWER CRACK-GROWTH RATE IS CONSISTENT WITH THE DELAY IN CRACK GROWTH OBSERVED ON THE MACROSCOPIC LEVEL.
Author : C. M. Hudson
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.94/5 ( download)
Download or read book Effect of Stress Ratio on Fatigue-crack Growth in 7075-T6 and 2024-T3 Aluminum-alloy Specimens written by C. M. Hudson and published by . This book was released on 1969 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stress ratio effects on fatigue crack growth in sheet aluminum alloys.
Author : I. E. Figge
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.85/5 ( download)
Download or read book Residual-static-strength and Slow-crack-growth Behavior of Duplex-annealed Ti-8Al-1Mo-1V Sheet written by I. E. Figge and published by . This book was released on 1968 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : D. Broek
Publisher : Springer Science & Business Media
ISBN 13 : 9400943334
Total Pages : 480 pages
Book Rating : 4.39/5 ( download)
Download or read book Elementary engineering fracture mechanics written by D. Broek and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: When asked to start teaching a course on engineering fracture mechanics, I realized that a concise textbook, giving a general oversight of the field, did not exist. The explanation is undoubtedly that the subject is still in a stage of early development, and that the methodologies have still a very limited applicability. It is not possible to give rules for general application of fracture mechanics concepts. Yet our comprehension of cracking and fracture beha viour of materials and structures is steadily increasing. Further developments may be expected in the not too distant future, enabling useful prediction of fracture safety and fracture characteristics on the basis of advanced fracture mechanics procedures. The user of such advanced procedures m\lst have a general understanding of the elementary concepts, which are provided by this volume. Emphasis was placed on the practical application of fracture mechanics, but it was aimed to treat the subject in a way that may interest both metallurgists and engineers. For the latter, some general knowledge of fracture mechanisms and fracture criteria is indispensable for an apprecia tion of the limita tions of fracture mechanics. Therefore a general discussion is provided on fracture mechanisms, fracture criteria, and other metal lurgical aspects, without going into much detail. Numerous references are provided to enable a more detailed study of these subjects which are still in a stage of speculative treatment.
Author : United States. National Aeronautics and Space Administration. Scientific and Technical Information Division
Publisher :
ISBN 13 :
Total Pages : 1156 pages
Book Rating : 4.18/5 ( download)
Download or read book A Selected Listing of NASA Scientific and Technical Reports for ... written by United States. National Aeronautics and Space Administration. Scientific and Technical Information Division and published by . This book was released on 1964 with total page 1156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. National Aeronautics and Space Administration Scientific and Technical Information Division
Publisher :
ISBN 13 :
Total Pages : 1152 pages
Book Rating : 4.39/5 ( download)
Download or read book NASA Scientific and Technical Reports written by United States. National Aeronautics and Space Administration Scientific and Technical Information Division and published by . This book was released on 1965 with total page 1152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Bahram Farahmand
Publisher : Springer Science & Business Media
ISBN 13 : 0387959246
Total Pages : 420 pages
Book Rating : 4.45/5 ( download)
Download or read book Virtual Testing and Predictive Modeling written by Bahram Farahmand and published by Springer Science & Business Media. This book was released on 2009-06-29 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thematerialsusedinmanufacturingtheaerospace,aircraft,automobile,andnuclear parts have inherent aws that may grow under uctuating load environments during the operational phase of the structural hardware. The design philosophy, material selection, analysis approach, testing, quality control, inspection, and manufacturing are key elements that can contribute to failure prevention and assure a trouble-free structure. To have a robust structure, it must be designed to withstand the envir- mental load throughout its service life, even when the structure has pre-existing aws or when a part of the structure has already failed. If the design philosophy of the structure is based on the fail-safe requirements, or multiple load path design, partial failure of a structural component due to crack propagation is localized and safely contained or arrested. For that reason, proper inspection technique must be scheduled for reusable parts to detect the amount and rate of crack growth, and the possible need for repairing or replacement of the part. An example of a fail-sa- designed structure with crack-arrest feature, common to all aircraft structural parts, is the skin-stiffened design con guration. However, in other cases, the design p- losophy has safe-life or single load path feature, where analysts must demonstrate that parts have adequate life during their service operation and the possibility of catastrophic failure is remote. For example, all pressurized vessels that have single load path feature are classi ed as high-risk parts. During their service operation, these tanks may develop cracks, which will grow gradually in a stable manner.
