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Author : Joseph Stephen Santner
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (719 download)
Download or read book Microstructural Effects on Fatigue Crack Propagation in Aluminum-copper Alloys written by Joseph Stephen Santner and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Joseph S. Santner
Publisher :
ISBN 13 :
Total Pages : 306 pages
Book Rating : 4.:/5 (22 download)
Download or read book Microstructural Effects on Fatigue Crack Propogation in Aluminium-copper Alloys written by Joseph S. Santner and published by . This book was released on 1980 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Christopher L. Muhlstein
Publisher :
ISBN 13 :
Total Pages : 228 pages
Book Rating : 4.:/5 (348 download)
Download or read book The Effect of Temperature and Microstructure on the Fatigue Crack Growth Behavior of AL-Cu Alloy C415 written by Christopher L. Muhlstein and published by . This book was released on 1996 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : James M. Larsen
Publisher :
ISBN 13 :
Total Pages : 286 pages
Book Rating : 4.3/5 (91 download)
Download or read book The Effects of Slip Character and Crack Closure on the Growth of Small Fatigue Cracks in Titanium-aluminium Alloys written by James M. Larsen and published by . This book was released on 1990 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation was performed to study the effects of slip character and crack closure on the propagation of small fatigue cracks in titanium- aluminum alloys. The materials examined were solution-treated Ti-4Al and Ti-8Al, as well as aged Ti-8Al. The propagation of naturally initiated surface cracks of depths as small as 25 micrometers was compared with the behavior of large through-thickness cracks. An extensometer was used to monitor crack closure throughout the large crack tests, and the closure behavior of the small cracks was measured using a computerized laser interferometric displacement gage having a displacement resolution of 0.01 micrometer. The measurements of crack closure were used to compute an effective stress intensity factor range. In all three alloys and for all test conditions, which included a range of stress levels and stress ratios, small cracks propagated faster than large cracks subjected to an equivalent Delta K, and the small cracks propagated under conditions that were significantly below the large-crack threshold, Delta K(th). Although the character and distribution of slip in Ti-Al alloys may have a dramatic influence on fatigue crack initiation and on the propagation of large cracks, this effect was minimal for small cracks.
Author : Jack Telesman
Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.:/5 (317 download)
Download or read book A Study of Spectrum Fatigue Crack Propagation in Two Aluminum Alloys. 2: Influence of Microstructures written by Jack Telesman and published by . This book was released on 1985 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : E. A. Starke
Publisher :
ISBN 13 :
Total Pages : 140 pages
Book Rating : 4.X/5 (4 download)
Download or read book The use of novel processing procedures for improving overall fatigue resistance of high strength aluminum alloys written by E. A. Starke and published by . This book was released on 1984 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Its objective is to develop an understanding of the mechanisms involved in the initiation and propagation of fatigue cracks in metals in order to optimize the microstructure of high strength aluminum alloys for overall fatigue resistance. The research conducted during this year was divided into three tasks. Task I was concerned with the effects of slip character and grain size on the intrinsic material and extrinsic closure contributions to fatigue crack growth resistance of 7475. Special thermal mechanical processing procedures were developed to control the microstructural features of interest. Task II was concerned with the use of the cyclic stress strain curve and a damage model for predicting fatigue crack growth thresholds. Fatigue crack initiation and fatigue crack propagation both involve the concept of cyclic accumulated damage. The details of the damage structure can be related to a material's cyclic stress strain response (CSSR). Task III is concerned with the effect of ion implantation on the low cycle fatigue response of 7475. Since fatigue crack initiation is a surface phenomenon and fatigue crack propagation is a bulk phenomenon, the fatigue properties may be optimized by production processes that develop microstructures resistant to FCI on the surface, and microstructures resistant to FCP throughout the bulk.
Author : W. G. Truckner
Publisher :
ISBN 13 :
Total Pages : 276 pages
Book Rating : 4.:/5 (227 download)
Download or read book Effects of Microstructure on Fatigue Crack Growth of High-Strength Aluminum Alloys written by W. G. Truckner and published by . This book was released on 1976 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Effects of microstructure and composition on resistance to fatigue crack growth were determined using constant amplitude loading conditions in low and high humidity air at test frequencies of 2 and 20 Hz. Strengthening precipitate had the largest effect at delta K above about 4 KSI sq. root of (in.), while solute composition had the largest effect at delta K below about 3 KSI sq. root of (in.). Large intermetallic particles affected growth at high and intermediate levels of delta K. (Author).
Author : C. Moura Branco
Publisher : Springer Science & Business Media
ISBN 13 : 9400922779
Total Pages : 982 pages
Book Rating : 4.4/5 (9 download)
Download or read book Advances in Fatigue Science and Technology written by C. Moura Branco and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 982 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the edited version of lectures and selected research contributions presented at the NATO ADVANCED STUDY INSTITUTE on ADVANCES IN FATIGUE SCIENCE AND TECHNOLOGY. held in Alvor. Portugal, 4th to 15th of April 1988. and organized by CEMUL - Center of Mechanics and Materials of The Technical University of Lisbon. The Institute was attended by 101 participants, including 15 lecturers. from 14 countries. The participants were leading scientists and engineers from universities, research institutions and industry. and also Ph.D~ students. Some participants presented papers during the Institute reporting the state-of-art of their research projects. All the sessions wel'e very active and quite extensive discussions on scientific aspects took place during the Institute. The Advanced Study Institute provided a forum for interaction among eminent scientists and engineers. from different schools of thought and young researchers. The Institute addressed the foundations and current state of the art of essential aspects related to fatigue science and technology, namely: Short Cracks, Metallurgical Aspects, Environmental Fatigue, Threshold Behaviour, Notch Behaviour. Creep and Fatigue Interactions at High Temperature, Multiaxial Fatigue, Low Cycle Fatigue, Methodology of Fatigue Testing, Variable Amplitude Fatigue, Fatigue of Advanced Materials. Elastic-Plastic Fatigue, and several engineering applications such as welded joints, energy systems, offshore structures, automotive industry, machine and engine components. This book is organized in three parts: Part I: Fundamentals of Fatigue Part II: Engineering Applications Part III: Research Contributions The research contributions covered most of the areas referred above.
Author :
Publisher :
ISBN 13 :
Total Pages : 115 pages
Book Rating : 4.:/5 (227 download)
Download or read book Effect of Microstructure on 7XXX Aluminum Alloy Fatigue Crack Growth Behavior Down to Near-Threshold Rates written by and published by . This book was released on 1981 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt: This investigation was undertaken to clarify the role of microstructure on steady state (constant load amplitude) and transient (single periodic overload) fatigue crack growth behavior in 7XXX aluminum alloys at low stress intensity factor ranges (delta K). These results were consolidated with data in the literature to obtain an understanding of microstructural effects on crack growth response over a broad delta K range. Constant load amplitude data show that there are significant differences in near-threshold FCG resistance among 7XXX alloys. Overaging to a T7 temper reduces low delta K FCG resistance greatly, whereas intermediate and high delta K FCG resistance is increased by overaging. In the presence of moisture at intermediate delta K levels, increasing Cu content from 1.0 to 2.3% increases crack growth resistance. However, there is no consistent effect of Cu content on near-threshold fatigue performance. Similarly, no clear influence of dispersoid type (Cr vs. Zr) on low delta K FCG resistance was detected. Increasing alloy purity (lowering Fe, Si content) enhances crack growth resistance at high delta K, but has no effect at near-threshold stress intensities. The importance of near-threshold FCG performance to alloy design and materials selection for fatigue resistance is discussed. Potential tradeoffs between design philosophies which emphasize damage tolerance characteristics vs. those which focus on improved life cycle economics are examined.
Author : T. H Sanders (Jr)
Publisher :
ISBN 13 :
Total Pages : 252 pages
Book Rating : 4.:/5 (227 download)
Download or read book Effect of Microstructure on Fatigue Crack Growth of 7XXX Aluminum Alloys Under Constant Amplitude and Spectrum Loading written by T. H Sanders (Jr) and published by . This book was released on 1978 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation was made to identify microstructural features which control the fatigue crack growth characteristics of 7XXX aluminum alloys. Constant amplitude and simple overload tests were conducted in humid air on controlled microstructural variations of alloys 7075 and 7050. Results indicated that relative influence of different microstructural features and ranking of the alloys based on fatigue crack propagation resistance depend on loading conditions.
Author : G. Lüutjering
Publisher :
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 (125 download)
Download or read book Sequence Effects on Fatigue Crack Propagation; Mechanical and Microstructural Contributions written by G. Lüutjering and published by . This book was released on 1979 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fatigue crack propagation of high strength aluminum alloys subjected to variable amplitude loading is strongly influenced by sequence effects. For a reliable evaluation of the sequence effects, an exact knowledge of the changes in the mechanical and physical conditions of the material surrounding the crack becomes necessary. To allow greater understanding of these processes, two aspects which are based on recent crack propagation investigations are considered in the present study.
Author : David Andrew Downham
Publisher :
ISBN 13 :
Total Pages : 91 pages
Book Rating : 4.:/5 (11 download)
Download or read book Effect of Microstructure on Short Fatigue Crack Initiation and Growth in Aluminium Alloys written by David Andrew Downham and published by . This book was released on 1986 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ignacy Telesman
Publisher :
ISBN 13 :
Total Pages : 392 pages
Book Rating : 4.:/5 (15 download)
Download or read book Effect of Microstructural Characteristics and Load History on Fatigue Crack Growth in 7050 and X7091 Aluminum Alloys written by Ignacy Telesman and published by . This book was released on 1983 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Edward James Coyne
Publisher :
ISBN 13 :
Total Pages : 162 pages
Book Rating : 4.:/5 (32 download)
Download or read book The Effect of Microstructure on the Fatigue Crack Propagation Behavior of an Aluminum-zinc-magnesium-zirconium Alloy written by Edward James Coyne and published by . This book was released on 1977 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : The Minerals, Metals & Materials Series
Publisher : Springer
ISBN 13 : 9783030058609
Total Pages : 1731 pages
Book Rating : 4.0/5 (586 download)
Download or read book TMS 2019 148th Annual Meeting & Exhibition Supplemental Proceedings written by The Minerals, Metals & Materials Series and published by Springer. This book was released on 2019-02-27 with total page 1731 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection features papers presented at the 147th Annual Meeting & Exhibition of The Minerals, Metals & Materials Society.
Author :
Publisher :
ISBN 13 :
Total Pages : 880 pages
Book Rating : 4.3/5 (91 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Author : Roger C. Reed
Publisher : Wiley-TMS
ISBN 13 : 9780873397285
Total Pages : 0 pages
Book Rating : 4.3/5 (972 download)
Download or read book Superalloys 2008 written by Roger C. Reed and published by Wiley-TMS. This book was released on 2008-09-14 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the proceedings of the 11th International Symposium on Superalloys held September 14-18, 2008, in Champion, Pennsylvania. The symposium covered all aspects of the development, production, behavior and integration of superalloys, and related high temperature materials, into gas turbines for aircraft, power generation and other applications. Symposium topics included cast, wrought and powder superalloys and associated coating systems. Behavioral studies in these areas were also discussed: solidification processing environmental properties mechanical behavior alloy development life prediction methodologies modeling and simulation performance of materials in service environments high temperature coatings joining and repair techniques Emphasis is placed on the perspective of the customer, e.g., the airlines, military, and power generation utilities. Current trends in customer requirements and the latest response of the superalloys community to customer challenges are highlighted in the volume.
