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Author : J. A. Henkener
Publisher :
ISBN 13 :
Total Pages : 64 pages
Book Rating : 4.:/5 (317 download)
Download or read book The Mechanical Behavior of Cross-rolled Beryllium Sheet written by J. A. Henkener and published by . This book was released on 1992 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781722817046
Total Pages : 62 pages
Book Rating : 4.8/5 (17 download)
Download or read book The Mechanical Behavior of Cross-Rolled Beryllium Sheet written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-16 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: In response to the failure of a conical section of the Insat C satellite during certification testing, the use of beryllium for payload structures, particularly in sheet product form, is being reevaluated. A test program was initiated to study the tensile, shear, and out-of-plane failure modes of beryllium cross-rolled sheet and to apply data to the development of an appropriate failure criterion. Tensile test results indicated that sanding the surface of beryllium sheet has no significant effect on yield strength but can produce a profound reduction in ultimate strength and results obtained by finite element analysis. Critical examination of these test results may contribute to the modification of a JSC policy for the use of beryllium in orbiter and payload structures. Henkener, J. A. and Spiker, I. K. and Castner, W. L. Johnson Space Center...
Author : Raymond W. Fenn (Jr)
Publisher :
ISBN 13 :
Total Pages : 168 pages
Book Rating : 4.3/5 (91 download)
Download or read book Test Methods for Mechanical Properties of Anisotropic Materials (Beryllium Sheet) written by Raymond W. Fenn (Jr) and published by . This book was released on 1967 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: Test techniques were developed for the determination of short-transverse tensile properties, Poisson's ratios, and shear moduli in anisotropic sheet. Cross-rolled 0.077-in. thick S-200 Beryllium sheet was tested to determine Young's moduli, Poisson's ratios, shear moduli, uniaxial tensile properties in three directions, biaxial tensile properties, three- and four-pint bend characteristics, fracture toughness, effect of anisotropy on fatigue strength, microstructural characteristics, basal and prism pole figures.
Author : C. J. Giemza
Publisher :
ISBN 13 :
Total Pages : 62 pages
Book Rating : 4.3/5 (91 download)
Download or read book Structural Response of Beryllium Sheet Produced by Three Fabrication Methods written by C. J. Giemza and published by . This book was released on 1961 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hot-pressed, hot-upset and hot cross-rolled Be sheets were examined to assess their differences and advantages from a structural design viewpoint. Tension, notch tension, compression, bend ductility and box-beam tests, with the main emphasis on factors which tend to embrittle Be, were conducted. The results showed that hot cross-rolled Be sheet exhibited both high strength and high elongation in tensile tests but was relatively brittle when, as in bending, the stress was complex. Hot-pressed Be sheet, which was low in tensile strength and elongation, demonstrated an excellent capacity for accommodating complex stresses in bending without fracture. The hot-upset Be sheet exhibited the best characteristics possessed by both hot-pressed and hot cross-rolled Be, though to a lesser degree than the optimum of each. The differences in mechanical behavior among the 3 groups were apparently a function of the degree of preferred orientation. However, the amounts of impurity elements which were reported could have contributed significantly to the embrittlement of the hot- pressed and hot cross-rolled Be sheet.
Author : F. M. Yans
Publisher :
ISBN 13 :
Total Pages : 60 pages
Book Rating : 4.3/5 (91 download)
Download or read book Preliminary Attempts to Produce Randomly Oriented Wrought Beryllium and Their Relation to Texture Development written by F. M. Yans and published by . This book was released on 1960 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Several experiments were performed utilizing beryllium single crystals and polycrystalline material in an effort to produce randomly oriented wrought beryllium and to relate the deformation modes to texture development during plastic deformation.
Author : H. D. Hanes
Publisher :
ISBN 13 :
Total Pages : 56 pages
Book Rating : 4.3/5 (91 download)
Download or read book Physical Metallurgy of Beryllium written by H. D. Hanes and published by . This book was released on 1966 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes the recent work done to more fully understand the physical metallurgy of beryllium. A review of work on purification of beryllium, which has yielded high-quality single crystals, was made. The basic deformation properties of beryllium have thus been more clearly defined. The effects of certain alloying elements and impurities are also discussed. Deformation modes in polycrystalline beryllium are discussed based on the results of studies of single crystals. The texture developed in polycrystalline beryllium by fabrication and resulting effects on mechanical properties are dealt with, as well as fracture modes in single-crystal and polycrystalline beryllium. Bend-plane splitting is the method suggested for initiation of fracture in beryllium. Some effects of the distribution of impurities as a result of thermal treatment on the mechanical properties are cited. Since grain size is an important factor in determining properties, recrystallization and grain-growth phenomena are covered. The physical-metallurgical phenomena which contribute to the properties and fabricability of commercial products are discussed. (Author).
Author :
Publisher :
ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (684 download)
Download or read book Dynamic Behavior of Beryllium as a Function of Texture written by and published by . This book was released on 1999 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The high-strain-rate stress-strain responses of commercial hot-pressed beryllium and rolled-sheet beryllium were studied as a function of orientation in compression and room temperature. Hot-pressed beryllium exhibits isotropic mechanical properties; whereas 16:1 rolled sheet was highly anisotropic. Rolled sheet displayed a factor of two difference in strength between the thickness and in-plane (lowest) directions. Twinning is a key deformation mechanism at high rates.
Author : Stanley W. Porembka
Publisher :
ISBN 13 :
Total Pages : 14 pages
Book Rating : 4.3/5 (91 download)
Download or read book Beryllium Ingot Sheet written by Stanley W. Porembka and published by . This book was released on 1965 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: This memorandum deals with the fabrication of beryllium ingot sheet. Until recently, most beryllium products have been fabricated from hot-pressed powder materials. As a result of the development of sound castings of beryllium of sufficient size, beryllium ingot sheet can now be made. The greatest advantage of sheet from cast ingots as compared with sheet from pressed powder is increased formability. However, ingot sheet has lower strength, and work is underway to improve the strength without serious loss of fabricability. The purpose of this summary is to review the casting and fabrication procedures for beryllium ingot and the resulting properties of sheet materials. (Author).
Author : N. Inoue
Publisher :
ISBN 13 :
Total Pages : 104 pages
Book Rating : 4.:/5 (227 download)
Download or read book Effects of Prestraining Under Hydrostatic Pressure on the Mechanical Behavior of Polycrystalline Beryllium written by N. Inoue and published by . This book was released on 1967 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of hydrostatic pressure up to 400 ksi and at 25 C to 300 C on the mechanical properties of three forms of beryllium (hot-pressed block, extruded rod and cross-rolled sheet) were investigated. Three effects of pressure were studied: mechanical behavior under pressure, the effect of pressure cycling on the subsequent atmospheric pressure mechanical properties and the effects of prestraining under hydrostatic pressure on the subsequent atmospheric pressure mechanical properties. Pressure cycling did not produce a significant improvement in the tensile ductility of the hot-pressed and the extruded materials; it did, however, given an improvement in the tensile and bend ductility of the sheet. With the possible exception of an improvement in the bend ductility of sheet, tensile prestraining under hydrostatic pressure either produced no change in the subsequent atmospheric pressure ductility or there resulted a decrease. The prestraining did, however, give an increase in yield and fracture stresses. The results obtained in the present investigation suggest that the principal effect of pressure is on the fracture stress rather than on the flow stress. (Author).
Author : A. N. Ashurst
Publisher :
ISBN 13 :
Total Pages : 56 pages
Book Rating : 4.3/5 (91 download)
Download or read book Summary of Beryllium Research and Develpment Programs written by A. N. Ashurst and published by . This book was released on 1971 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : F. M. Yans
Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.3/5 (91 download)
Download or read book Preliminary Survey of Mechanical Properties and Phase Relationships in Several Beryllium Binary Alloys written by F. M. Yans and published by . This book was released on 1960 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Webster Hodge
Publisher :
ISBN 13 :
Total Pages : 230 pages
Book Rating : 4.3/5 (91 download)
Download or read book Beryllium for Structural Applications written by Webster Hodge and published by . This book was released on 1962 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reports of Government-supported research on the physical and process metallurgy of beryllium that were received at DMIC during the period 1958-1960, inclusive, are summarized, together with some reports and publications of foreign authors. No proprietary or classified information is included. In addition, reference is made to some of the more importa t writings on health hazards and safety procedures that appeared during the period covered. (Author).
Author : United States. National Aeronautics and Space Administration
Publisher :
ISBN 13 :
Total Pages : 1318 pages
Book Rating : 4.:/5 (319 download)
Download or read book Technical Publications Announcements with Indexes written by United States. National Aeronautics and Space Administration and published by . This book was released on 1962 with total page 1318 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 592 pages
Book Rating : 4.:/5 (319 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1992 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Air Force Materials Laboratory (U.S.)
Publisher :
ISBN 13 :
Total Pages : 270 pages
Book Rating : 4.3/5 (91 download)
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.
Author : Junie J. Banks
Publisher :
ISBN 13 :
Total Pages : 214 pages
Book Rating : 4.3/5 (91 download)
Download or read book A Review of the Air Force Materials Research and Development Program written by Junie J. Banks and published by . This book was released on 1962 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: These reports cover basic and applied research in the materials area being conducted by the Metals and Ceramics, Nonmetallic Materials, Physics, Manufacturing Technology and Applications Laboratories of the Directorate of Materials and Processes.
Author : G. E. Meyer
Publisher :
ISBN 13 :
Total Pages : 62 pages
Book Rating : 4.3/5 (91 download)
Download or read book Beryllium Wrought Products written by G. E. Meyer and published by . This book was released on 1970 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report is a comprehensive guide to the manufacture of beryllium wrought products by forging, extrusion, wire-drawing, rolling, or forming. The various specific processes available for each of these operations are described in detail and compared. The economics of each of the operations is discussed. An introductory section of the report discusses the commercial forms of beryllium and beryllium alloys that are available, and provides a brief description of the phenomenon of texturing in beryllium. (Author).
