Download or read book Fatigue of Metal Crystals written by and published by . This book was released on 1967 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fatigue of Metal Crystals part Ii Extension of Fatigue Life of Crystals Through Control of Substructure written by S. Weissmann and published by . This book was released on 1967 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The intrinsic fatigue life of aluminum single crystals was extended by alternating the cycling between high and low strain amplitudes. It was shown that the life could be extended 50%-75% by the application of a multi-stage cycling program which prevented an excessive build-up of lattice defects induced by high-strain cycling. The fatigue life of aluminum crystals with transverse boundaries was also extended by annealing the high-strained regions during fatigue. The interconnection between surface topography and slip activity in single crystals and polycrystalline specimens of silver was investigated. A correlation between the surface striations and the activity on the primary glide plane was established. Cross-slip did not appear to contribute greatly to the striation formation.
Download or read book Fatigue of Metal Crystals written by Sigmund Weissmann and published by . This book was released on 1966 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: The structural changes in silver and aluminum crystals fatigued in bending were studied by metallographic, x-ray and electron microscope methods. The fatigue process may be divided into three consecutive broad stages characterized by an increase in dislocation density, formation of substructure and fragmentation into cell structure, respectively. Strain and temperature are the two parameters controlling the development of the dislocation structure.
Download or read book Fatigue of Metal Crystals Part I Extension of Fatigue Life of Crystals Through Control of Substructure written by S. Weissmann and published by . This book was released on 1966 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: The structural changes in silver and aluminum crystals fatigued in bending were studied by metallographic, X-ray and electron microscope methods. The fatigue process may be divided into three consecutive broad stages characterized by an increase in dislocation density, formation of substructure and fragmentation into cell structure, respectively. Strain and temperature are the two parameters controlling the development of the dislocation substructure. Both a decrease in strain or an increase in temperature cause growth of subgrains and cells, while variation of the parameters in the opposite direction has an inverse effect on the structure. The growth of subgrains and cells resulting from cycling with lowered strain amplitude is attributed to a mechanism involving dislocation climb. The life of single crystals of silver was nearly two orders of magnitude greater than that of aluminum. The introduction of a grain boundary reduced the life for both to the same level, thus eliminating the beneficial effect of low stacking fault energy on fatigue life. The deleterious effect of boundaries introduced as stress-raisers was, however, eliminated by alternating the cycling between high and low strain amplitudes. The fatigue life of aluminum crystals could thus be extended fourfold. The technique of alternating cycling produced internal decoration of the areas with high internal stresses. (Author).
Download or read book Technical Abstract Bulletin written by Defense Documentation Center (U.S.) and published by . This book was released on 1967 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mechanism of Fatigue Failure of Metals Part Iii Extension of Fatigue Life of Crystals Through Control of Substructure written by S. Weissmann and published by . This book was released on 1967 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Abstracts of AF Materials Laboratory Reports written by Air Force Materials Laboratory (U.S.) and published by . This book was released on 1968 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Technical reports published by the Air Force Materials Laboratory during the period 1 January 1967-31 December 1967 are abstracted herein and indexed by branches of the laboratory, technical subject matter, investigator, project monitor and contractor. Reports on research conducted by the Air Force Materials Laboratory personnel as well as that conducted on contract are included.
Download or read book Mechanism of Fatigue Failure of Metals written by Sigmund Weissmann and published by . This book was released on 1967 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography on the Fatigue of Materials Components and Structures written by J. Y. Mann and published by Elsevier. This book was released on 2013-09-03 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bibliography on the Fatigue of Materials, Components and Structures, Volume 4: 1966 - 1969 presents the publications relevant to the study of materials science, particularly fatigue. The selection presents materials that cover fixed and mobile structures for use on land, sea and air; pressure vessels and nuclear reactors; mechanical components; and surgical implants. The publications presented tackle the developments in technological processes, evaluation of fatigue performance. The selection also covers the fundamental research on the subject and the development of theories. The book will be of great interest to students, researchers, and practitioner of materials science.
Download or read book Metals Abstracts written by and published by . This book was released on 1972 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the International Conference on the Strength of Metals and Alloys in Commemoration of the 30th Anniversary of the Japan Institute of Metals written by and published by . This book was released on 1968 with total page 1106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fatigue of Metallic Materials written by M. Klesnil and published by Elsevier. This book was released on 1992-04-13 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews problems in the mechanical behaviour of cyclically loaded metallic materials, primarily with regard to the nature of the fatigue process. The first edition of the book appeared in 1980. The present second edition represents a revised form of the original book and also covers recent developments in the field. As the book focuses on physical-metallurgical aspects, it occupies a unique and important position in the technical literature, which has so far been devoted mainly to engineering metal fatigue problems and their technical solution in specific practical cases. The book provides a compact review of current knowledge on physical metallurgical processes that accompany and affect the fatigue of metallic materials, and also presents the background for applying the new results to practical designing and to the selection of materials in engineering practice. The authors present an updated review of results from countries both in the east and the west and cover a relatively large field in a concise manner. The work will be of value to research workers and students following advanced and post-graduate courses in the fields of materials science and mechanical engineering.
Download or read book Proceedings of the International Conference on the Strength of Metals and Alloys written by and published by . This book was released on 1968 with total page 1108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book FATIGUE OF METAL CRYSTALS written by and published by . This book was released on 1965 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structure changes caused by fatigue in silver and aluminum crystals were studied by X-ray and electron microscope techniques at various distances from the crystal boundaries. It was observed that the fatigue life is drastically reduced in the presence of transverse boundaries, while longitudinal boundaries have a much smaller effect. The dislocation arrangements produced by fatigue depend on the distribution of strains. In the highly strained regions near the grain boundary the study revealed formation of lattice domains of small size bounded by very complex dislocation arrangements. In the less strained regions a led to a formation of a coarser and simpler substructure. The observed differences in dislocation structure between the high and low strain regions were ascribed to differences in the rate of generation of disclocations relative to their ability to cross-slip. (Author).
Download or read book On Fatigue Phenomena written by Herbert John Gough and published by . This book was released on 1928 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography on the Fatigue of Materials Components and Structures written by and published by Pergamon. This book was released on 1990 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Materials involved include most metals and alloys, non-metallics ranging from concrete to plastics and natural fibres, and metallic and non-metallic composites. Publications cover fixed and mobile structures for use on land, air and at sea; pressure vessels and nuclear reactors; mechanical componenets in a range of machinery; and surgical implants.
Download or read book The fatigue of metals with chapters on the fatigue of wood and written by Herbert Fisher Moore and published by . This book was released on 1927 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
