Comparative Study Of Basic Test And Resistance Curve Methods For Fracture Toughness Evaluation Of Heat Treated Zr 2 5nb Alloy
DOWNLOAD
Download Comparative Study Of Basic Test And Resistance Curve Methods For Fracture Toughness Evaluation Of Heat Treated Zr 2 5nb Alloy PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Comparative Study Of Basic Test And Resistance Curve Methods For Fracture Toughness Evaluation Of Heat Treated Zr 2 5nb Alloy book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Comparative Study Of Basic Test And Resistance Curve Methods For Fracture Toughness Evaluation Of Heat Treated Zr 2 5nb Alloy
DOWNLOAD
Author : A. Bind
language : en
Publisher:
Release Date : 2014
Comparative Study Of Basic Test And Resistance Curve Methods For Fracture Toughness Evaluation Of Heat Treated Zr 2 5nb Alloy written by A. Bind and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with Basic test method categories.
ASTM E1820-11, the most widely adopted standard for the determination of fracture toughness parameters, recommends two ductile crack growth correction methods for the evaluation of the J-integral parameter, viz., the basic test (BT) method and the resistance curve test (RC) method. In the present work, a comparison between the fracture toughness parameters obtained using these two methods for heat-treated Zr-2.5Nb alloy at 25°C and 300°C is presented. In order to examine the influence of a material's microstructural condition on the fracture toughness results obtained via these two methods, Zr-2.5Nb alloy was investigated under six solution heat-treated conditions after getting soaked at 850°C, 870°C, or 890°C for either 15 min or 30 min followed by water quenching. The BT method predicted a higher J parameter than the RC method for a given crack length. This deviation in the magnitude of J increased with increasing crack length and was found to be almost twice as much at room temperature as the deviation observed at 300°C. For smaller crack lengths (i.e., up to a/W
Fracture Toughness Evaluation By R Curve Methods
DOWNLOAD
Author :
language : en
Publisher: ASTM International
Release Date : 1973
Fracture Toughness Evaluation By R Curve Methods written by and has been published by ASTM International this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with Mathematics categories.
Fracture Toughness Evaluation By R Curve Methods
DOWNLOAD
Author : D. E. McCabe
language : en
Publisher: ASTM International
Release Date : 1973
Fracture Toughness Evaluation By R Curve Methods written by D. E. McCabe and has been published by ASTM International this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with Metals categories.
Round Robin Testing Of Fracture Toughness Characteristics Of Thin Walled Tubing
DOWNLOAD
Author : S. K. Yagnik
language : en
Publisher:
Release Date : 2008
Round Robin Testing Of Fracture Toughness Characteristics Of Thin Walled Tubing written by S. K. Yagnik and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Cladding mechanical properties categories.
Cladding fracture behavior is an important consideration, particularly in secondary damage of fuel cladding during service and during handling and storage of discharged fuel. A number of test techniques are available that approximate the stress-state experienced by the cladding for crack initiation and propagation in the axial direction (z) and thus provide a measure of the crack propagation resistance. However, the classical fracture mechanics procedure cannot be applied directly to the thin-walled cladding geometry. Thus, attempts to measure fracture toughness have been influenced not only by material characteristics but also by the technique used to measure it. A large scatter in the reported data exists. Crack propagation resistance in the radial direction (r) is even harder to quantify due to the small wall thickness. We report here on our collaborative round-robin exercise to measure and evaluate fracture toughness in unirradiated tubing at 20 and 300°C, wherein seven laboratories participated in testing samples from the same set of materials. The samples were from RXA and SRA Zircaloy-4 cladding and an aluminum alloy tubing of dimensions same as the cladding. All three tubing materials were precharacterized using standard procedures for tensile property measurements. The KIC for the aluminum alloy block material, from which the tubing was machined, was measured using standard CT (compact tension) testing. The relative toughness of the three materials is known to vary as aluminum alloy 1⁄4 SRA Zircaloy 1⁄4 RXA Zircaloy. The objective was to assess the various techniques (Pin-Loaded Tension, Vallecitos Embedded Charpy, X-Specimen, Internal Conical Mandrel, Double-Edge Notched Tension and Burst Test) for reproducibility of the results and their ability to discriminate between the material variants. Each laboratory pursued its own specific test technique and methodology of data evaluation under a mutually agreed upon set of common guidelines. Fracture characteristics of the materials from each of these seven techniques were evaluated. All the techniques except the Internal Conical Mandrel (ICM) and the Burst Test (BT) followed the conventional procedure of evaluating J values from load-displacement curves. Values for J were generated using a finite element simulation of crack initiation and propagation in the ICM and the stress intensity factor KI calculated in the BT. The paper includes data from various techniques and a comparative analysis that was performed. We conclude that the appropriate parameters for comparison purposes in these studies are J0.2 and (dJ/da)0.2. Jmax is less meaningful because of the extensive plasticity exhibited by the cladding material and the observation that crack extensions were far from comparable from different tests at maximum load. Each testing method was clearly able to distinguish the expected toughness order among the three materials. Reproducibility within each test method was very good compared to the scatter normally expected in fracture toughness testing. J0.2 values, for SRA Zircaloy-4 at room temperature, fell into two groups; comparison of the toughness values among the various testing methods was surprisingly good, with standard deviations in the range, 5-17 %, although such an agreement was limited to techniques within each group. Reasons for the differences, such as loading at the crack tip, the methods used for measuring crack extension "?a," and the procedures adopted for analysis of the data were explored. It is clear that for thin-walled Zircaloy tubing no single value of fracture toughness exists. However, it does appear possible to obtain a useful toughness value that is appropriate for a specific application, if the technique (specimen geometry and local stress-strain conditions) closely models the application.
Fracture Toughness Testing And Its Applications
DOWNLOAD
Author :
language : en
Publisher: ASTM International
Release Date : 1965
Fracture Toughness Testing And Its Applications written by and has been published by ASTM International this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with categories.
Fracture Toughness Evaluation By R Curve Methods
DOWNLOAD
Author : D. E. McCabe
language : en
Publisher: ASTM International
Release Date : 1973
Fracture Toughness Evaluation By R Curve Methods written by D. E. McCabe and has been published by ASTM International this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with Mathematics categories.
The Influence Of Crack Length And Thickness In Plane Strain Fracture Toughness Tests
DOWNLOAD
Author : Melvin H. Jones
language : en
Publisher:
Release Date : 1969
The Influence Of Crack Length And Thickness In Plane Strain Fracture Toughness Tests written by Melvin H. Jones and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969 with categories.
Developments In Fracture Mechanics Test Methods Standardization
DOWNLOAD
Author : W. F Brown
language : en
Publisher: ASTM International
Release Date : 1977
Developments In Fracture Mechanics Test Methods Standardization written by W. F Brown and has been published by ASTM International this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with categories.
Review Of Developments In Plane Strain Fracture Toughness Testing
DOWNLOAD
Author :
language : en
Publisher: ASTM International
Release Date : 2011
Review Of Developments In Plane Strain Fracture Toughness Testing written by and has been published by ASTM International this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Fracture mechanics categories.
Fracture Toughness Evaluation By R Curve Methods
DOWNLOAD
Author : American society for testing and materials. Committee E-24 on fracture testing of metals
language : en
Publisher:
Release Date : 1973
Fracture Toughness Evaluation By R Curve Methods written by American society for testing and materials. Committee E-24 on fracture testing of metals and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with categories.