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The Applicability Of Small And Ultra Small Fracture Toughness Specimens For Material Characterization
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Book Synopsis The Applicability of Small and Ultra-Small Fracture Toughness Specimens for Material Characterization by : T. Planman
Download or read book The Applicability of Small and Ultra-Small Fracture Toughness Specimens for Material Characterization written by T. Planman and published by . This book was released on 1998 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the study fracture toughness tests were performed with 20% sidegrooved small (10*10*55 mm) and ultra-small (3*4*27,5*5*27 and 5*10*55 mm) specimens. The objective of the study was to experimentally determine the measuring capacity of small specimens and to check the data against the statistical cleavage fracture model developed by VTT. Two pressure vessel steels, an A533B base metal (HSST-3) and a VVER base metal of 15Kh2MFA type were used in the study. Most of the tests were performed in the transition range and cleavage fracture was observed in the tests. Additional tests were conducted in the temperature range of ductile material behavior. The data indicate that the T0 (100 MPa?m) reference temperature can be determined even with 3*4 mm specimens in consistency with larger specimens by applying only the statistical specimen size correction, without any consideration on specimen constraint. The fracture resistance curves measured with 5*10 mm specimens give a good technical estimation for the larger specimen R-curves.
Book Synopsis Application of Small Specimens to Fracture Mechanics Characterization of Irradiated Pressure Vessel Steels by : DE. McCabe
Download or read book Application of Small Specimens to Fracture Mechanics Characterization of Irradiated Pressure Vessel Steels written by DE. McCabe and published by . This book was released on 1997 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this study, precracked Charpy V-notch (PCVN) specimens were used to characterize the fracture toughness of unirradiated and irradiated reactor pressure vessel steels in the transition region by means of three-point static bending. Fracture toughness at cleavage instability was calculated in terms of elastic-plastic KJc values. A statistical size correction based upon weakest-link theory was performed. The concept of a master curve was applied to analyze fracture toughness properties. Initially, size-corrected PCVN data from A 533 grade B steel, designated HSST Plate 02, were used to position the master curve and a 5% tolerance bound for KJc data. By converting PCVN data to 1T compact specimen equivalent KJc data, the same master curve and 5% tolerance bound curve were plotted against the Electric Power Research Institute valid linear-elastic KIc database and the ASME lower bound KIc curve. Comparison shows that the master curve positioned by testing several PCVN specimens describes very well the massive fracture toughness database of large specimens. These results give strong support to the validity of KJc. with respect to KIc in general and to the applicability of PCVN specimens to measure fracture toughness of reactor vessel steels in particular. Finally, irradiated PCVN specimens of other materials were tested, and the results are compared to compact specimen data. The current results show that PCVNs demonstrate very good capacity for fracture toughness characterization of reactor pressure vessel steels. It provides an opportunity for direct measurement of fracture toughness of irradiated materials by means of precracking and testing Charpy specimens from surveillance capsules. However, size limits based on constraint theory restrict the operational test temperature range for KJc data from PCVN specimens.
Book Synopsis Application of Small Specimens to Fracture Mechanics Characterization of Irradiated Pressure Vessel Steels by :
Download or read book Application of Small Specimens to Fracture Mechanics Characterization of Irradiated Pressure Vessel Steels written by and published by . This book was released on 1996 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this study, precracked Charpy V-notch (PCVN) specimens were used to characterize the fracture toughness of unirradiated and irradiated reactor pressure vessel steels in the transition region by means of three-point static bending. Fracture toughness at cleavage instability was calculated in terms of elastic-plastic K{sub Jc} values. A statistical size correction based upon weakest-link theory was performed. The concept of a master curve was applied to analyze fracture toughness properties. Initially, size-corrected PCVN data from A 533 grade B steel, designated HSST Plate O2, were used to position the master curve and a 5% tolerance bound for K{sub Jc} data. By converting PCVN data to IT compact specimen equivalent K{sub Jc} data, the same master curve and 5% tolerance bound curve were plotted against the Electric Power Research Institute valid linear-elastic K{sub Jc} database and the ASME lower bound K{sub Ic} curve. Comparison shows that the master curve positioned by testing several PCVN specimens describes very well the massive fracture toughness database of large specimens. These results give strong support to the validity of K{sub Jc} with respect to K{sub Ic} in general and to the applicability of PCVN specimens to measure fracture toughness of reactor vessel steels in particular. Finally, irradiated PCVN specimens of other materials were tested, and the results are compared to compact specimen data. The current results show that PCVNs demonstrate very good capacity for fracture toughness characterization of reactor pressure vessel steels. It provides an opportunity for direct measurement of fracture toughness of irradiated materials by means of precracking and testing Charpy specimens from surveillance capsules. However, size limits based on constraint theory restrict the operational test temperature range for K{sub Jc} data from PCVN specimens. 13 refs., 8 figs., 1 tab.
Book Synopsis Small Specimen Test Techniques by : W. R. Corwin
Download or read book Small Specimen Test Techniques written by W. R. Corwin and published by ASTM International. This book was released on 1998 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt: As part of an increasing interest in radiation embrittlement for aging nuclear reactors, scientists gathered in New Orleans in January 1997 to consider the interests and capabilities of the scientific-testing community and of the commercial light-water-cooled power-reactor industry in terms of improving methods to characterize component integrity. The resulting 37 papers concentrate on the use of unique small and miniature specimens; nondestructive, nonintrusive, and in- situ test techniques for measuring mechanical and fracture properties; the application of tests to irradiation-induced embrittlement; and actual examples of tests to determine material integrity and to evaluate potential component life extension. They consider experimental, analytical, and computational aspects. Annotation copyrighted by Book News, Inc., Portland, OR
Book Synopsis Contact and Fracture Mechanics by : Pranav H. Darji
Download or read book Contact and Fracture Mechanics written by Pranav H. Darji and published by BoD – Books on Demand. This book was released on 2018-05-30 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains two sections: Chapters 1-7 deal with contact mechanics, and Chapters 8-13 deal with fracture mechanics. The different contributions of this book will cover the various advanced topics of research. It provides some needed background with respect to contact mechanics, fracture mechanics and the use of finite element methods in both. All the covered chapters of this book are of a theoretical and applied nature, suitable for the researchers of engineering, physics, applied mathematics and mechanics with an interest in computer simulation of contact and fracture problems.
Book Synopsis Fatigue and Fracture Mechanics by : Tina Louise Panontin
Download or read book Fatigue and Fracture Mechanics written by Tina Louise Panontin and published by ASTM International. This book was released on 1999 with total page 922 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Developments in Fracture Mechanics Test Methods Standardization by : William F. Brown
Download or read book Developments in Fracture Mechanics Test Methods Standardization written by William F. Brown and published by ASTM International. This book was released on 1977 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Time-Dependent Fracture Mechanics by : Dominique P. Miannay
Download or read book Time-Dependent Fracture Mechanics written by Dominique P. Miannay and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intended for engineers, researchers, and graduate students dealing with materials science, structural design, and nondestructive testing and evaluation, this book represents a continuation of the author's "Fracture Mechanics" (1997). It will appeal to a variety of audiences: The discussion of design codes and procedures will be of use to practicing engineers, particularly in the nuclear, aerospace, and pipeline industries; the extensive bibliography and discussion of recent results will make it a useful reference for academic researchers; and graduate students will find the clear explanations and worked examples useful for learning the field. The book begins with a general treatment of fracture mechanics in terms of material properties and loading and provides up-to-date reviews of the ductile-brittle transition in steels and of methods for analyzing the risk of fracture. It then discusses the dynamics of fracture and creep in homogeneous and isotropic media, including discussions of high-loading-rate characteristics, the behavior of stationary cracks in elastic media under stress, and the propagation of cracks in elastic media. This is followed by an analysis of creep and crack initiation and propagation, describing, for example, the morphology and incubation times of crack initiation and growth and the effects of high temperatures. The book concludes with treatments of cycling deformation and fatigue, creep-fatigue fractures, and crack initiation and propagation. Problems at the end of each chapter serve to reinforce and test the student's knowledge and to extend some of the discussions in the text. Solutions to half of the problems are provided.
Book Synopsis Comprehensive Materials Processing by :
Download or read book Comprehensive Materials Processing written by and published by Newnes. This book was released on 2014-04-07 with total page 5485 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive Materials Processing, Thirteen Volume Set provides students and professionals with a one-stop resource consolidating and enhancing the literature of the materials processing and manufacturing universe. It provides authoritative analysis of all processes, technologies, and techniques for converting industrial materials from a raw state into finished parts or products. Assisting scientists and engineers in the selection, design, and use of materials, whether in the lab or in industry, it matches the adaptive complexity of emergent materials and processing technologies. Extensive traditional article-level academic discussion of core theories and applications is supplemented by applied case studies and advanced multimedia features. Coverage encompasses the general categories of solidification, powder, deposition, and deformation processing, and includes discussion on plant and tool design, analysis and characterization of processing techniques, high-temperatures studies, and the influence of process scale on component characteristics and behavior. Authored and reviewed by world-class academic and industrial specialists in each subject field Practical tools such as integrated case studies, user-defined process schemata, and multimedia modeling and functionality Maximizes research efficiency by collating the most important and established information in one place with integrated applets linking to relevant outside sources
Book Synopsis Analysis of Fracture Toughness Mechanism in Ultra-fine-grained Steels by : Toshihiro Hanamura
Download or read book Analysis of Fracture Toughness Mechanism in Ultra-fine-grained Steels written by Toshihiro Hanamura and published by Springer. This book was released on 2014-09-04 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, advanced steel technologies mainly developed at the National Institute for Materials Science (NIMS), Japan, for structure control, mechanical properties, and the related mechanisms are introduced and discussed. NIMS has long worked on developing advanced steel techniques, namely, producing advanced steels by using only simple alloying elements such as carbon, manganese, and silicon, and also by utilizing steel scrap. The hope is that this approach will lead to a technology of a so-called steel-to-steel recycling process, with the ultimate goal of a recycling process such as an automotive-steel-to-automotive-steel recycling process to take the place of the current cascade-type recycling system. The main idea is to utilize ultra-grain refining structures and hetero structures as well as martensite structures. In particular, the focus of this book is on tensile strength and toughness of advanced steels from both the fundamental and engineering points of view. Fundamentally, a unique approach to analysis is taken, based on fracture surface energy as effective grain size is employed to better understand the mechanism of property improvement. From the engineering point of view, in fracture toughness such factors as crack tip opening displacement (CTOD) of advanced steels are evaluated in comparison with those of conventional steels.
Book Synopsis Determination of Fracture Toughness Characteristics of Small- Size Chevron-Notched Specimens by : Yevgeny Deryugin
Download or read book Determination of Fracture Toughness Characteristics of Small- Size Chevron-Notched Specimens written by Yevgeny Deryugin and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A new method is proposed to determine fracture toughness of structural materials according to the test data of non-standard small-size chevron-notched specimens. During the tests, loading diagrams and photographic images of the specimens taken in time intervals are obtained. The crack length is measured in the process of its initiation and propagation. The analytical expressions are obtained being based and derived from the constitutive equations of engineering fracture mechanics to determine the crack-driving force (specific fracture energy) and the stress intensity factor. The method allows us to exclude the periodic unloading of the specimen applied under standard test conditions to determine the change in specimen compliance, which is taken into account in constitutive equations at crack length increase. All necessary calculation parameters are determined according to the experimental data. The method allows us to certify fracture toughness of the material without restrictions regarding the amount of plastic deformation and in front of the crack tip and in the specimen as a whole. The examples are given to calculate the fracture toughness criteria for a number of structural materials characterized by the ability to plastic deformation and by the Young's modulus value.
Download or read book Fracture Analysis written by and published by ASTM International. This book was released on 1974 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fracture Toughness Testing and Its Applications by :
Download or read book Fracture Toughness Testing and Its Applications written by and published by ASTM International. This book was released on 1965 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Allgemeine Ikonographie: A-Ezechiel by :
Download or read book Allgemeine Ikonographie: A-Ezechiel written by and published by . This book was released on 1968 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Use of Subsized Specimens for Evaluating the Fracture Toughness of Irradiated Materials by : FH. Huang
Download or read book Use of Subsized Specimens for Evaluating the Fracture Toughness of Irradiated Materials written by FH. Huang and published by . This book was released on 1986 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of specimen size, temperature, and irradiation on fracture toughness were studied in unirradiated compact tension specimens of Alloy A286 and HT-9 and irradiated specimens of 20% cold-worked Type 316 stainless steel. Techniques for specimen preparation and test procedures were developed using unirradiated specimens of A286 with the specimen size identical to that of irradiated specimens of 20% cold-worked Type 316 stainless steel. Fracture toughness tests on these precracked specimens were conducted at various temperatures, and test results were analyzed using the multiple specimen R-curve method. Owing to irradiation hardening and post-irradiation toughness degradation, sufficient constraint existed in thin irradiated specimens to permit the application of the J-integral approach. Analysis showed the absence of a significant size effect among the specimens tested and that the size requirements for an ASTM valid JIc test were satisfied, indicating that small specimens may be used for post-irradiation fracture toughness testing. The results are discussed in terms of size criteria for valid JIc determination and conditions for J-controlled crack growth.
Book Synopsis The Fracture of Brittle Materials by : Stephen W. Freiman
Download or read book The Fracture of Brittle Materials written by Stephen W. Freiman and published by John Wiley & Sons. This book was released on 2019-01-07 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a modern, practical approach to the understanding and measurement procedures relevant to the fracture of brittle materials This book examines the testing and analysis of the fracture of brittle materials. Expanding on the measurement and analysis methodology contained in the first edition, it covers the relevant measurements (toughness and strength), material types, fracture mechanics, measurement techniques, reliability and lifetime predictions, microstructural considerations, and material/test selection processes appropriate for the analysis of the fracture behavior of brittle materials. The Fracture of Brittle Materials: Testing and Analysis, Second Edition summarizes the concepts behind the selection of a test procedure for fracture toughness and strength, and goes into detail on how the statistics of fracture can be used to assure reliability. It explains the importance of the role of microstructure in these determinations and emphasizes the use of fractographic analysis as an important tool in understanding why a part failed. The new edition includes a significant quantity of material related to the fracture of biomaterials, and features two new chapters—one on thermal shock, the other on the modeling of the fracture process. It also expands on a discussion of how to treat the statistics of fracture strength data to ensure reliability. Provides practical analysis of fracture toughness and strength Introduces the engineering and materials student to the basic concepts necessary for analyzing brittle fracture Contains new statistical analysis procedures to allow for the prediction of the safe design of brittle components Contains real-world examples to assist the reader in applying the concepts to their own research, material development, and quality-control needs The Fracture of Brittle Materials: Testing and Analysis, Second Edition is an important resource for all students, technicians, engineers, scientists, and researchers involved in the study, analysis, creation, or testing of ceramics.
Book Synopsis Fatigue and Fracture Mechanics by : John H. Underwood
Download or read book Fatigue and Fracture Mechanics written by John H. Underwood and published by ASTM International. This book was released on 1997 with total page 697 pages. Available in PDF, EPUB and Kindle. Book excerpt:
