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Author : John M. Holt
Publisher : ASTM International
ISBN 13 : 0803112955
Total Pages : 219 pages
Book Rating : 4.8/5 (31 download)
Download or read book Charpy Impact Test written by John M. Holt and published by ASTM International. This book was released on 1990 with total page 219 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : AL. Lowe
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (125 download)
Download or read book Factors Influencing Accuracy of Charpy Impact Test Data written by AL. Lowe and published by . This book was released on 1990 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Charpy impact test was originally developed as an acceptance test for steel products. However, using the Charpy test to evaluate the integrity of nuclear reactor vessels has caused the test data to be subject to scientific evaluation. The many small errors in parameters affecting the results produced relatively large errors in any analysis of the data. The sources affecting these errors are identified and an effort is made to quantify them. The Charpy impact test is a simple and convenient test but the end result is engineering data. To provide data for scientific evaluations greater control must be placed on all phases of the testing process.
Author : NH. Fahey
Publisher :
ISBN 13 :
Total Pages : 17 pages
Book Rating : 4.:/5 (125 download)
Download or read book The Charpy Impact Test--Its Accuracy and Factors Affecting Test Results written by NH. Fahey and published by . This book was released on 1970 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Army Materials and Mechanics Research Center, AMMRC, (formerly Watertown Arsenal Laboratories) has managed a program for many years on the certification of Charpy impact machines. During this period, approximately 200 machines have been evaluated annually.
Author : D. Francois
Publisher : Elsevier
ISBN 13 : 008052897X
Total Pages : 497 pages
Book Rating : 4.0/5 (85 download)
Download or read book From Charpy to Present Impact Testing written by D. Francois and published by Elsevier. This book was released on 2002-06-18 with total page 497 pages. Available in PDF, EPUB and Kindle. Book excerpt: From Charpy to Present Impact Testing contains 52 peer-reviewed papers selected from those presented at the Charpy Centenary Conference held in Poitiers, France, 2-5 October 2001. The name of Charpy remains associated with impact testing on notched specimens. At a time when many steam engines exploded, engineers were preoccupied with studying the resistance of steels to impact loading. The Charpy test has provided invaluable indications on the impact properties of materials. It revealed the brittle ductile transition of ferritic steels. The Charpy test is able to provide more quantitative results by instrumenting the striker, which allows the evolution of the applied load during the impact to be determined. The Charpy test is of great importance to evaluate the embrittlement of steels by irradiation in nuclear reactors. Progress in computer programming has allowed for a computer model of the test to be developed; a difficult task in view of its dynamic, three dimensional, adiabatic nature. Together with precise observations of the processes of fracture, this opens the possibility of transferring quantitatively the results of Charpy tests to real components. This test has also been extended to materials other than steels, and is also frequently used to test polymeric materials. Thus the Charpy test is a tool of great importance and is still at the root of a number of investigations; this is the reason why it was felt that the centenary of the Charpy test had to be celebrated. The Société Française de Métallurgie et de Matériaux decided to organise an international conference which was put under the auspices of the European Society for the Integrity of Structures (ESIS). This Charpy Centenary Conference (CCC 2001) was held in Poitiers, at Futuroscope in October 2001. More than 150 participants from 17 countries took part in the discussions and about one hundred presentations were given. An exhibition of equipment showed, not only present day testing machines, but also one of the first Charpy pendulums, brought all the way from Imperial College in London. From Charpy to Present Impact Testing puts together a number of significant contributions. They are classified into 6 headings: •Keynote lectures,•Micromechanisms,•Polymers,•Testing procedures,•Applications,•Modelling.
Author : Ward C. Stevens
Publisher :
ISBN 13 :
Total Pages : 838 pages
Book Rating : 4.:/5 (176 download)
Download or read book Factors Affecting the Validity and Accuracy of Instrumental Impact Tests with Special Reference to the Pendulum and Drop Tower Versions of the Charpy Test written by Ward C. Stevens and published by . This book was released on 1987 with total page 838 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : T. A. Siewert
Publisher : ASTM International
ISBN 13 : 0803128649
Total Pages : 402 pages
Book Rating : 4.8/5 (31 download)
Download or read book Pendulum Impact Testing written by T. A. Siewert and published by ASTM International. This book was released on 2000 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : H. Toda
Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 (125 download)
Download or read book On the Accuracy of Measurement and Calibration of Load Signal in the Instrumented Charpy Impact Test written by H. Toda and published by . This book was released on 2000 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Significant variation in measured load of an instrumented Charpy impact test is observed if specimen materials or sizes are changed from the standard specimen. Load calibration factors for different materials and sizes of specimens are evaluated by means of both experiments and finite element analysis. Elastic finite element analysis shows that the strain fields in the instrumented striker in contact with different materials and sizes of specimens are not exactly the same as those for the standard specimen. As a result of experiment and analysis, the decrease in stiffness or size of specimens results in a decrease in the calibration factor. Those are attributable to strain localization near the region in which the strain gage is attached. Therefore, the measured load for low-stiffness materials or miniaturized specimens is overestimated when the decrease of calibration factor is disregarded. Those results strongly suggest that the system must be calibrated for the different materials and sizes of specimens to obtain accurate toughness data.
Author : AL. Lowe
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (125 download)
Download or read book Variations in Charpy Impact Data Evaluated by a Round-Robin Testing Program -- A Summary written by AL. Lowe and published by . This book was released on 1996 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: A round-robin type test program was designed to quantify some of the variables associated with Charpy impact test data. Each participant tested pre-ma-chined specimens at each of six designated test temperatures. The data were evaluated using several techniques normally used to determine transition region temperatures and upper-shelf energies. These data were interpreted statistically to determine mean values and standard deviations. Variations in data appear to be more a factor of the specimen location within the material than related to test temperature. The variations in the data between the different testing participants were within the limits commonly observed. The expected erosion determining the 30 and 50 ft-lb transition temperatures and the upper-shelf energies were found to be independent of the evaluation technique used.
Author : Brian Scott Louden
Publisher :
ISBN 13 :
Total Pages : 43 pages
Book Rating : 4.:/5 (182 download)
Download or read book The Influence of Specimen Size of Charpy Impact Testing of Unirradiated HT-9 written by Brian Scott Louden and published by . This book was released on 1987 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : D. S. Gelles
Publisher : ASTM International
ISBN 13 : 0803120168
Total Pages : 1169 pages
Book Rating : 4.8/5 (31 download)
Download or read book Effects of Radiation on Materials written by D. S. Gelles and published by ASTM International. This book was released on 1996 with total page 1169 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : D. Kockott
Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (125 download)
Download or read book Factors Influencing the Reliability of Results in Accelerated Weathering Tests written by D. Kockott and published by . This book was released on 1996 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: The influence of both radiation and temperature on the ageing of polymers is discussed. With the purpose of improving the reliability of test results gained in accelerated weathering devices, it is recommended to measure the effective irradiance Eeff = ?E? s(?) d? (E?: spectral irradiance, s(?): spectral sensitivity of the material) and the effective radiant exposure Heff =?Eeff dt. The temperature of the irradiated sample, among others, depends on both the spectral distribution E? of solar radiation and on the absorptance ?(?) of the material as well as on the longwave infrared radiation of the environment. These influencing factors have to be observed when simulating environmental factors in laboratory devices. As an example, the testing of big component parts and entire vehicles is discussed.
Author : Roger E. Stoller
Publisher : ASTM International
ISBN 13 : 080311477X
Total Pages : 1315 pages
Book Rating : 4.8/5 (31 download)
Download or read book Effects of Radiation on Materials written by Roger E. Stoller and published by ASTM International. This book was released on 1992 with total page 1315 pages. Available in PDF, EPUB and Kindle. Book excerpt: Symposium held in Nashville, Tennessee, June 1990. Almost two-thirds of these 91 papers are authored by researchers outside of the US (including information on research in the former USSR, Japan, and Europe). Topics include: current commercial power reactor systems; microstructural characterization
Author :
Publisher :
ISBN 13 :
Total Pages : 1192 pages
Book Rating : 4.3/5 (91 download)
Download or read book Effects of Radiation on Materials written by and published by . This book was released on 1996 with total page 1192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Harry Farrar
Publisher : ASTM International
ISBN 13 : 0803118996
Total Pages : 854 pages
Book Rating : 4.8/5 (31 download)
Download or read book Reactor Dosimetry written by Harry Farrar and published by ASTM International. This book was released on 1994 with total page 854 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the 8th ASTM-Euratom Symposium, held in Vail, Colorado, Aug.-Sept. 1993, to provide a forum for experts to discuss their latest results under the broad theme of dosimetry for the correlation of radiation effects. Preceded by a summary of the keynote presentations and followed by summa
Author : James L. Holman
Publisher :
ISBN 13 :
Total Pages : 56 pages
Book Rating : 4.3/5 (91 download)
Download or read book Factors Affecting Fabricability of Electrowon Copper written by James L. Holman and published by . This book was released on 1978 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Federal Bureau of Mines has conducted research to delineate factors affecting relative fabricability of electrowon and electrorefined copper. The Bureau's Rolla Metallurgy Research Center coordinated and participated in a statistical round-robin chemical analysis and performed impact tests on lead-doped copper specimens. In a series of round-robin analyses, cathode, bar, or rod from a domestic lot of electrorefined copper and electrowon copper from a domestic and a Peruvian source were ananlyzed for Pb, Fe, Bi, Se, Ag, O, S, Sb, and seven other elements. The electrowon cathode from both sources surpassed requirements for electrolytic cathode, although lead in the Peruvian lot exceeded specification for oxygen-free electronic grade. The least interlaboratory agreement was for oxygen analysis.
Author : M.S. Loveday
Publisher : Springer
ISBN 13 : 940112888X
Total Pages : 407 pages
Book Rating : 4.4/5 (11 download)
Download or read book Harmonization of Testing Practice for High Temperature Materials written by M.S. Loveday and published by Springer. This book was released on 2013-12-20 with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present decade is opening new frontiers in high-energy astrophysics. After the X-ray satellites in the 1980's, including Einstein, Tenma, EXOSAT and Ginga, several satellites are, or will soon be, simultaneously in orbit offering spectacular advances in X-ray imaging at low energies (ROSATj Yohkoh) as well as at high energies (GRANAT), in spectroscopy with increased bandwidth (ASCAj SAX), and in timing (XTE). While these satellites allow us to study atomic radiation from hot plasmas or energetic electrons, other satellites study nuclear radiation at gamma-ray energies (CGRO) associated with radioactivity or spallation reactions. These experiments show that the whole universe is emitting radiation at high energies, hence we call it the "hot universe. " The hot universe, preferentially emitting X- and gamma-rays, provides us with many surprises and much information. A symposium "The Hot Universe" was held in conjunction with the XXIIIrd General Assembly of the International Astronomical Union, at Kyoto on August 26-30 in 1997. The proceedings are organized as follows. Synthetic view of "the hot universe" is discussed in Section 1, "Plasma and Fresh Nucleosynthesis Phenomena". Timely discussions on the strategy for future missions "Future Space Program" are found in Section 2. Then the contents are divided into two major subjects: the compact objects and thin hot diffuse plasmas. Section 3 is devoted to the category of compact objects which includes white dwarfs, neutron stars, and gravitationally collapsed objects: stellar mass black holes or active galactic nuclei.
Author : T. A. Siewert
Publisher : ASTM International
ISBN 13 : 0803120184
Total Pages : 302 pages
Book Rating : 4.8/5 (31 download)
Download or read book Pendulum Impact Machines written by T. A. Siewert and published by ASTM International. This book was released on 1995 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:
