Download or read book The Relationship Between Fracture Toughness and Charpy Impact Transition Temperatures in Mild Steel written by D. A. Curry and published by . This book was released on 1979 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Relationship Between Toughness and Charpy Impact Transition Temperatures in Mild Steel written by D. A. Curry and published by . This book was released on 1979 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fundamentals of Fracture Mechanics written by John Frederick Knott and published by Gruppo Italiano Frattura. This book was released on 1973 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Brittle Fracture in Steel Structures written by G.M. Boyd and published by Elsevier. This book was released on 2016-01-22 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt: Brittle Fracture in Steel Structures emphasizes the prevention of brittle fracture in structures fabricated from mild and low alloy steel operating at normal ambient temperatures. This book is divided into seven chapters. Chapter 1 provides the historical background and summarizes numerous case histories of brittle fractures. The nature of the phenomenon and factors that influence brittle fracture, including various methods of testing to determine the notch ductilities of different steels are described in Chapters 2 to 4. The fifth chapter elaborates the design considerations affecting the choice of steel for structural applications. Chapter 6 reviews the main methods for assessing the degree of notch ductility needed for different applications, while Chapter 7 deliberates practical procedures, recommended by the Navy Department Advisory Committee on Structural Steels, for assessing the suitability of different steels for particular applications. This publication is beneficial to metallurgists and welders intending to acquire knowledge of mild steel structures fabricated by welding from rolled steel plates and sections.
Download or read book Measurement of Fracture Toughness by Instrumented Impact Test written by CE. Turner and published by . This book was released on 1970 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Previous studies of the Charpy impact test using instrumented pendulum or anvil with V-noteh steel specimens are reviewed. It is concluded that such results add little to the usefulness of the test since even cleavage fractures are normally well beyond yield. No fracture toughness index emerges other than the simple measure of energy from the pendulum. In a second generation of work, fatigue cracked and side grooved (fcsg) specimens promoted below yield fractures up to about the 50 percent fracture appearance transition temperature (fatt). These results have been analysed by linear fracture mechanics to give the dynamic fracture toughness KID. In this interpretation understanding of the oscillations in load records due to specimen vibration is important. Results are discussed in the light of recent studies including an analog model with which near quantitative agreement is found. An improved simple correction factor for inertia loading effects is presented. It is concluded from both this work and supporting measurements of KID by other techniques that dynamic fracture toughness KID can be measured for low-strength steels using the instrumented fcsg impact test subject to the precautions and corrections discussed. Typical values of KID for mild steel are 60 ksi ?in. at 0 C falling to 30 ksi ?in. at -60 C. The significance of these low values in relation to the much higher static toughness is discussed briefly.
Download or read book Relationship Between Material Fracture Toughness Using Fracture Mechanics and Transition Temperature Tests written by H. T. CORTEN and published by . This book was released on 1971 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fatigue and Fracture Mechanics written by Ravinder Chona and published by ASTM International. This book was released on 2002 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Relationship Between Material Fracture Toughness Using Fracture Mechanics and Transition Temperature Tests written by and published by . This book was released on 1971 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applicability of Sub Charpy Size Bend and Impact Specimens for Estimation of Fracture Toughness in the Transition Region written by M. Nevalainen and published by . This book was released on 1999 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: As part of a test program to introduce small specimen test techniques, fracture toughness tests have been performed with 20% side-grooved small (10•10•55 mm) and "ultra-small" (3•4•27, 5•5•27 and 5•10•55 mm) specimens. The objectives were to evaluate the measuring capacity of small specimens and to verify the applicability of the statistical cleavage fracture model of VTT for such test data. Two pressure vessel steels were used in the study. Most of the tests were performed in the transition range and ended at cleavage fracture, but some tests were also conducted in the temperature range of ductile tearing. According to the measured data, the 100 MPa?m reference temperatures (T0), determined even with 3•4 mm specimens, are in good agreement with those of the larger specimens. The statistical specimen size correction only was applied in the analyses, i.e., without any consideration of specimen constraint. The measurements made in the ductile range indicate that practically similar fracture resistance curves can be obtained with the 5•10 mm and larger specimens up to the J-level of 500 kN/m. Also, correlations have been developed, by applying a fracture mechanics approach, for estimating the Charpy transition temperatures of ferritic structural steels from small specimen test data. The correlations were verified by analyzing test data produced with Charpy (ISO-V) and KLST-type subsize specimens (3•4•27 mm). Two energy criterion combinations were applied for determining transition temperatures, i.e., the criteria based on the area of the specimen ligament, being in accordance with the master curve definition, and those derived from an empirical mean relationship found between the upper-shelf energies measured with ISO-V and KLST specimens for various steels. The results show that both of these criteria can be used to give a satisfactory correlation between the transition temperatures and that the standard deviations of the correlations are approximately equal, i.e., around 15°C. A method is proposed for estimating the Charpy upper-shelf energy from subsize specimen data.
Download or read book Effects of Speed and Temperature on Crack Toughness and Yield Strength in Mild Steel written by J. M. KRAFFT and published by . This book was released on 1962 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: OF THE CONTINUOUSLY DECREASING LOCAL STRESS RATES IN ADVANCE OF A RAPIDLY LOADED OR OF A MOVING CRACK AND AT LOW TEMPERATURE, ELASTIC BOUNDARY APPEARS TO BE CRITICAL. The upper yield strength determined for such stress rate, taken to the negative 1.5 power, is proportional to the plane strain fracture toughness over an indefinitely large range of speed and temperature. Estimates thus become possible at temperatures so high that fracture toughness would be too large to be evaluated by specimens of reasonable size. Using such estimates, the Charpy notch bar transition for three steels is predicted with good agreement. Further, the effects of crack propagation velocity can be given interpretation quite consistent with observations. (Author).
Download or read book Brittle Fracture of Steel 1950 1961 written by and published by . This book was released on 1961 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: The bibliography has been compiled from the unclassified literature for the period January 1950 through November 15, 1961. Reviews and bibliographies which have been listed furnish references to historical reviews and earlier studies on brittle fracture. An author and a subject index are included.
Download or read book The Effect of Certain Variables on Fracture Appearance Transition Temperature and Critical Fracture Toughness of High Strength Sheet Steel written by Hal W. Maynor and published by . This book was released on 1964 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal written by West of Scotland Iron and Steel Institute and published by . This book was released on 1968 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Temperature Dependence and Variability of Fracture Toughness in the Transition Regime for A508 Grade 4N Pressure Vessel Steel written by T. R. Leax and published by . This book was released on 2006 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: A508 Grade 4N is a high nickel (3.4 %) pressure vessel steel with a relatively high yield strength (585 MPa minimum for Class 1) and a relatively low transition temperature (47 J transition temperature of -29°C or below). Published fracture toughness data on this steel are nonexistent, and so they have not been included in prior assessments of the applicability of the Master Curve approach to pressure vessel steels. The purpose of this study is to compare the temperature dependence and data scatter for this steel with the behavior predicted by the Master Curve. The available database consists of approximately 800 fracture toughness tests on 51 material heats, some of which were given a temper embrittling heat treatment. As an additional basis of comparison, test data on A508 Grades 2 and 3, 1 % nickel weld metal, and several high nickel (1.3-3.8 %) steels (NiCrMo and NiCrMoV) were included in the assessment. Maximum likelihood techniques were used to fit the toughness data, and Monte Carlo methods were used to assess the observed distribution of Weibull slopes (related to the extent of variability). The results of this assessment show that the Master Curve provides a good description of the shape (temperature dependence) of the toughness curve for moderate and high transition temperatures. However, for heats with low transition temperatures below the range observed in other pressure vessel steels, the shape of the toughness curve deviates from the Master Curve. The lower the transition temperature, the larger the deviation from the Master Curve. Based on the test data, a model describing the behavior of A508 Grade 4N has been developed. This model also accurately describes the toughness behavior of the other pressure vessel steels included in this study. With respect to variability, the Weibull slope of A508 Grade 4N is consistent with the value of four prescribed by the Master Curve. However, the Weibull slope for the other pressure vessel steels included in this assessment is close to 3.4. This lower value of the Weibull slope, which indicates larger variability, is likely the result of material inhomogeneity.
Download or read book Impact Testing of Metals written by Symposium on Impact Testing of Metals and published by ASTM International. This book was released on 1984 with total page 323 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transferability of Fracture Mechanical Characteristics written by Ivo Dlouhý and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: Five laboratories from France, Hungary and the Czech Republic have solved a Project supported fmancially by NATO within the Science for Peace Program (under Nr. 972655) for three years. The project, titled Fracture ResistanceofSteelsfor Containers of Spent Nuclear Fuel, was focused (i) on the generation of data needed for the qualification procedure of a new container introduced by Skoda Nuclear Machinery and (ii) on a number of topics of scientific nature associated with the interesting field of transferability of fracture mechanical data-, It has been found during numerous conference presentations of project results that the knowledge developed within the project would be more attractive when published in a more comprehensive form. This was the reason why the final project workshop was arranged as a meeting of project collaborators and contributing invited experts working in very similar field. The main scope of the final project workshop, titled Transferability of Fracture Mechanical Data and held in Brno from 5 to 6 November 200I, was to bring together project collaborators with a number of invited international experts, both covering the spectrum of topics solved within the project and reviewing the project results in the presence ofthese specialists. A totalof34 colleagues from 7 European countries and the USA participated in the workshop.
Download or read book The Dependence of the Fracture Toughness of Mild Steel on Temperature and Crack Velocity written by Brown University and published by . This book was released on 1971 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
