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Author : H. C. Savage
Publisher :
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.3/5 (91 download)
Download or read book Thermal Stresses in Beryllium written by H. C. Savage and published by . This book was released on 1950 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : W. H. Kelley
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.3/5 (91 download)
Download or read book Beryllium Thermal-cycling Experiment written by W. H. Kelley and published by . This book was released on 1959 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thermal Stresses in Beryllium. Test written by and published by . This book was released on 1954 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The high power density volume heat source effect induced by neutron and gamma heating in a reactor was simulated by electrical resistance heating of a beryllium block. Holes were drilled in the block to provide flow passages for sodium used to remove the internally generated heat. Operation at 1100 to 1200 deg F with internal temperature difference as high as 150 deg F and with cyclic variation of average power density from 15 to 40 watts/cm/sup 3/ did not cause cracking or distortion in the test sample. No corrosion or mass transfer was observed anywhere in the test loop. (auth).
Author : H. L. Sujata
Publisher :
ISBN 13 :
Total Pages : 88 pages
Book Rating : 4.:/5 (319 download)
Download or read book Thermal Stress Testing of Beryllium Oxide Moderator Shapes written by H. L. Sujata and published by . This book was released on 1962 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book THERMAL STRESSES IN HOLLOW CYLINDERS OF BERYLLIUM OXIDE. written by and published by . This book was released on 1962 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The problems of experimentally studying the effects of thermal stresses in beryllium oxide are considered in detail. Several ways of producing thermal stresses in hollow cylinders are described and the theoretical stress equations are given for these conditions. Theoretical treatment and practical considerations indicate that an experimental technique involving a static DELTA T and external heating of a hollow cylinder should be the most acceptable experimental approach. (auth).
Download or read book THERMAL STRESSES IN SOLID CYLINDERS OF BERYLLIUM OXIDE. written by and published by . This book was released on 1962 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: S>The problem of fracture of solid cylinders of BeO due to stresses induced by transient temperature differences is considered. The stress analysis for this case, the appropriate fracture theories, and the related properties of BeO are presenied and used to estimate the conditions under which solid cyIinders of BeO should crack. On the basis of available data and assuming that the maximunw principal stress controls fracture, BeO cylinders should fail on quenching from 1000 C if r h (radius of cylinder times film coefficient) is greater than 0.01 cal sec−1(deg C)−1 cm−1. An additional assumption used in this calculation w; that the tensile strength is 30,000 psi and independent of temperature over the temperature range under consideration. A testing program required to evaluate BeO for use in reactors is outlined in general terms. (auth).
Author : Peter Hidnert
Publisher :
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.3/5 (91 download)
Download or read book Thermal Expansion of Beryllium and Aluminum-beryllium Alloys written by Peter Hidnert and published by . This book was released on 1927 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : H. L. Sujata
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (682 download)
Download or read book Thermal Stress Testing of Beryllium Oxide Moderation Shapes written by H. L. Sujata and published by . This book was released on 1962 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : F. C. Hull
Publisher :
ISBN 13 :
Total Pages : 52 pages
Book Rating : 4.3/5 (91 download)
Download or read book Short Time, High Temperature Tensile Tests of Beryllium written by F. C. Hull and published by . This book was released on 1948 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : R. G. O'Rourke
Publisher :
ISBN 13 :
Total Pages : 146 pages
Book Rating : 4.3/5 (91 download)
Download or read book Mechanical Properties of Reactor-grade Beryllium at Elevated Temperatures written by R. G. O'Rourke and published by . This book was released on 1956 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 33 pages
Book Rating : 4.:/5 (683 download)
Download or read book Elevated Temperature Stress Strain Behavior of Beryllium Powder Product written by and published by . This book was released on 1995 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: Several grades of beryllium powder product were tested under isothermal conditions in compression over a temperature range of room temperature to 1000 C and a strain rate range from 0.001 s−1 to 1 s−1. Samples were compressed to a total strain of 1 (64% reduction in height). It is shown that all the grades are strain rate sensitive and that strain rate sensitivity increases with temperature. Yield points were exhibited by some grades up to a temperature of 500 C, and appeared to be primarily dependent on prior thermal history which determined the availability of mobile dislocations. Serrated flow in the form of stress drops was seen in all the materials tested and was most pronounced at 500 C. The appearance and magnitude of the stress drops were dependent on accumulated strain, strain rate, sample orientation, and composition. The flow stress and shape of the flow curves differed significantly from grade to grade due to variations in alloy content, the size and distribution of BeO particles, aging precipitates, and grain size. The ductile-brittle transition temperature (DBTT) was determined for each grade of material and shown to be dependent on composition and thermal treatment. Structure/property relationships are discussed using processing history, microscopy (light and transmission), and property data.
Author : S. H. Gelles
Publisher :
ISBN 13 :
Total Pages : 46 pages
Book Rating : 4.3/5 (91 download)
Download or read book Stability of the High Temperature Beta Phase in Beryllium and Beryllium Alloys written by S. H. Gelles and published by . This book was released on 1960 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : J. Lillie
Publisher :
ISBN 13 :
Total Pages : 30 pages
Book Rating : 4.3/5 (91 download)
Download or read book Some Properties of Beryllium Oxide written by J. Lillie and published by . This book was released on 1961 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Warren E. Greenwald
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.3/5 (91 download)
Download or read book Photothermoelasticity Techniques and Application written by Warren E. Greenwald and published by . This book was released on 1961 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Maurice F. Amateau
Publisher :
ISBN 13 :
Total Pages : 82 pages
Book Rating : 4.3/5 (91 download)
Download or read book Review of Recent Developments in the Metallurgy of Beryllium written by Maurice F. Amateau and published by . This book was released on 1961 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (683 download)
Download or read book Thermal Fatigue Behavior of US and Russian Grades of Beryllium written by and published by . This book was released on 1996 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: A novel technique has been used to test the relative low cycle thermal fatigue resistance of different grades of US and Russian beryllium which is proposed as plasma facing armor for fusion reactor first wall, limiter, and divertor components. The 30 KW electron beam test system at Sandia National Laboratories was used to sweep the beam spot along one direction at 1 Hz. This produces a localized temperature ''spike'' of 750°C for each pass of the beam. Large thermal stress in excess of the yield strength are generated due to very high spot heat flux, 250 MW/m2. Cyclic plastic strains on the order of 0.6% produced visible cracking on the heated surface in less than 3000 cycles. An in-vacuo fiber optic borescope was used to visually inspect the beryllium surfaces for crack initiation. Grades of US beryllium tested included: S-65C, S-65H, S-200F, S-300F-H, Sr-200, I-400, extruded high purity. HIP'd sperical powder, porous beryllium (94% and 98% dense), Be/30% BeO, Be/60% BeO, and TiBe12. Russian grades included: TGP-56, TShGT, DShG-200, and TShG-56. Both the number of cycles to crack initiation, and the depth of crack propagation, were measured. The most fatigue resistant grades were S-65C, DShG-200, TShGT, and TShG-56. Rolled sheet Be(SR-200) showed excellent crack propagation resistance in the plane of rolling, despite early formation of delamination cracks. Only one sample showed no evidence of surface melting, Extruded (T). Metallographic and chemical analyses are provided. Good agreement was found between the measured depth of cracks and a 2-D elastic-plastic finite element stress analysis.
Author : Robert Edward Maringer
Publisher :
ISBN 13 :
Total Pages : 14 pages
Book Rating : 4.3/5 (91 download)
Download or read book The Effects of Processing on the Dimensional Stability of Beryllium Mirrors written by Robert Edward Maringer and published by . This book was released on 1970 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: The accumulated experience indicates that beryllium is not an ideally stable material. Recent research has resulted in a significant advance in the understanding of the reasons for this instability. It is the purpose of this memorandum to point out some of the reasons for this instability and to indicate methods to avoid it. (Author).
