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Author : Jason Paul Petti
Publisher :
ISBN 13 :
Total Pages : 326 pages
Book Rating : 4.:/5 (568 download)
Download or read book Constraint and Ductile Tearing Effects on the Cleavage Fracture of Ferritic Steel written by Jason Paul Petti and published by . This book was released on 2004 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mark Kirk
Publisher : ASTM International
ISBN 13 : 0803120133
Total Pages : 546 pages
Book Rating : 4.8/5 (31 download)
Download or read book Constraint Effects in Fracture Theory and Applications written by Mark Kirk and published by ASTM International. This book was released on 1995 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert H. Dodds
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (31 download)
Download or read book Numerical Modeling of Ductile Tearing Effects on Cleavage Fracture Toughness written by Robert H. Dodds and published by . This book was released on 1994 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : C S Wiesner
Publisher : Abington Publishing
ISBN 13 :
Total Pages : 78 pages
Book Rating : 4.3/5 (91 download)
Download or read book The 'Local Approach' to Cleavage Fracture written by C S Wiesner and published by Abington Publishing. This book was released on 1995-12-14 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report assesses the current state of knowledge of the 'local approach' to cleavage fracture, reviews application to ferritic steels and their weldments and addresses limitations and disadvantages of the methodology.
Author : E. M. Hackett
Publisher : ASTM International
ISBN 13 : 0803114818
Total Pages : 514 pages
Book Rating : 4.8/5 (31 download)
Download or read book Constraint Effects in Fracture written by E. M. Hackett and published by ASTM International. This book was released on 1993 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: Papers presented at the symposium on [title] held in Indianapolis, Indiana, May 1991, provide a framework for quantifying constraint effects in terms of both continuum mechanics and micro-mechanical modeling approaches. Such a framework is useful in establishing accurate predictions of the fracture
Download or read book Numerical Modeling of Ductile Tearing Effects on Cleavage Fracture Toughness written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Experimental studies demonstrate a significant effect of specimen size, a/W ratio and prior ductile tearing on cleavage fracture toughness values (J[sub c]) measured in the ductile-to-brittle transition region of ferritic materials. In the lower-transition region, cleavage fracture often occurs under conditions of large-scale yielding but without prior ductile crack extension. The increased toughness develops when plastic zones formed at the crack tip interact with nearby specimen surfaces which relaxes crack-tip constraint (stress triaxiality). In the mid-to-upper transition region, small amounts of ductile crack extension (often
Author : John H. Underwood
Publisher : ASTM International
ISBN 13 : 0803124104
Total Pages : 697 pages
Book Rating : 4.8/5 (31 download)
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:
Author : Ivo Dlouhý
Publisher : Springer Science & Business Media
ISBN 13 : 9401006083
Total Pages : 380 pages
Book Rating : 4.4/5 (1 download)
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.
Author :
Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.:/5 (227 download)
Download or read book Effects of Prior Ductile Tearing on Cleavage Fracture Toughness in the Transition Region written by and published by . This book was released on 1993 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Previous work by the authors described a micromechanics fracture model to correct measured J sub c-values for the mechanistic effects of large- scale yielding. This new work extends the model to also include the influence of ductile crack extension prior to cleavage. Ductile crack extensions of 10-15 X the initial crack tip opening displacement at initiation are considered in plane-strain, finite element computations The finite element results demonstrate a significant elevation in crack-tip constraint due to macroscopic 'sharpening' of the extending tip relative to the-blunt tip at the initiation of growth. However this effect is offset partially by the additional plastic deformation associated with the increased applied J required to grow the crack. The initial a/W ratio, tearing modulus, strain hardening exponent and specimen size interact in a complex manner to define the evolving near-tip conditions for cleavage fracture. The paper explores development of the new model, provides necessary graphs and procedures for its application and demonstrates the effects of the model on fracture data sets for two pressure vessel steels (A533B and A515). J- integral, Constraint, Scaling model, Ductile-brittle, Crack growth effects.
Author : Radu Zaharopol
Publisher : Springer Science & Business Media
ISBN 13 : 9783764371340
Total Pages : 1008 pages
Book Rating : 4.3/5 (713 download)
Download or read book Invariant Probabilities of Markov-Feller Operators and Their Supports written by Radu Zaharopol and published by Springer Science & Business Media. This book was released on 2005-01-28 with total page 1008 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers invariant probabilities for a large class of discrete-time homogeneous Markov processes known as Feller processes. These Feller processes appear in the study of iterated function systems with probabilities, convolution operators, and certain time series. From the reviews: "A very useful reference for researchers wishing to enter the area of stationary Markov processes both from a probabilistic and a dynamical point of view." --MONATSHEFTE FÜR MATHEMATIK
Author :
Publisher :
ISBN 13 :
Total Pages : 742 pages
Book Rating : 4.:/5 (318 download)
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1995 with total page 742 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : B. Cotterell
Publisher :
ISBN 13 :
Total Pages : 11 pages
Book Rating : 4.:/5 (125 download)
Download or read book Ductile-Brittle Fracture Transition as a Result of Increasing In-Plane Constraint in a Medium Carbon Steel written by B. Cotterell and published by . This book was released on 1994 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Crack-tip opening displacement (CTOD) tests and large deformation finite element analyses have been carried out for double-edge notched tension [DE(T)] specimens with a/W = 0.9 [DE(T)9] and 0.5 [DE(T)5], single-edge notched tension [SE(T)] specimens with a/W = 0.5 [SE(T)5], three-point bend [SE(B)] specimens with a/W = 0.5 [SE(B)5] and 0.1 [SE(B)1], and center-cracked tension [M(T)] specimens with a/W = 0.5 [M(T)5]. The results of the CTOD tests show that the fracture toughness of the material decreases, and a ductile-brittle fracture transition takes place as the in-plane plastic constraint of the specimens increases. In M(T)5 and SE(B)1 specimens with low constraints, fracture is ductile and no transition occurs. In DE(T)5, SE(T)5, and SE(B)5 with higher constraints, fracture initiates by ductile tearing and then changes to cleavage. In the DE(T)9 specimens with the highest constraint, fracture initiates by brittle cleavage. The results of the finite element analyses show that the maximum achievable tensile stress outside the finite strain zone ahead of the crack tip increases with increasing plastic constraint in the order of M(T)5, SE(B)1, DE(T)5, SE(T)5, SE(B)5, and DE(T)9. The ductile-brittle transition is due to the maximum tensile stress ahead of the crack tip reaching the critical stress for cleavage fracture as the plastic constraint increases.
Author : A. Bakker
Publisher :
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 (125 download)
Download or read book Prediction of Cleavage Fracture in the Brittle to Ductile Transition Region of a Ferritic Steel written by A. Bakker and published by . This book was released on 1995 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: A model is presented to predict the event of cleavage fracture in the brittle to ductile transition region. In this region cleavage fracture could occur after some amount of ductile tearing. The model takes into account the competition between the nucleation of voids at second phase inclusions leading to ductile fracture and the nucleation of unstable micro cracks initiated at second phase inclusions leading to cleavage fracture. The model was tested on four point bend specimens of a ferritic steel tested in the brittle to ductile transition region. It was shown that there could be a significant amount of ductile crack growth before the specimens failed by cleavage. Two different crack growth simulations were performed to investigate the stresses ahead of a ductile growing crack. One simulation takes into account the softening of the material in the process zone, due to damage, around a quasistatically ductile growing crack. The second simulation neglects this damage. It was found that the crack opening stress near the crack tip in the process zone is significantly lower than in the analysis neglecting the effect of damage. Further from the crack tip, outside the damage zone the crack opening stresses are similar in both simulations.
Author : F. M. Beremin
Publisher :
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.:/5 (81 download)
Download or read book Effect of Stress Triaxiality on the Ductile Tearing and Cleavage Fracture of Mild Steel written by F. M. Beremin and published by . This book was released on 1987 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ravinder Chona
Publisher : ASTM International
ISBN 13 : 0803128886
Total Pages : 408 pages
Book Rating : 4.8/5 (31 download)
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:
Author : Ian Milne
Publisher : Elsevier
ISBN 13 : 0080490735
Total Pages : 4647 pages
Book Rating : 4.0/5 (84 download)
Download or read book Comprehensive Structural Integrity written by Ian Milne and published by Elsevier. This book was released on 2003-07-25 with total page 4647 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this major reference work is to provide a first point of entry to the literature for the researchers in any field relating to structural integrity in the form of a definitive research/reference tool which links the various sub-disciplines that comprise the whole of structural integrity. Special emphasis will be given to the interaction between mechanics and materials and structural integrity applications. Because of the interdisciplinary and applied nature of the work, it will be of interest to mechanical engineers and materials scientists from both academic and industrial backgrounds including bioengineering, interface engineering and nanotechnology. The scope of this work encompasses, but is not restricted to: fracture mechanics, fatigue, creep, materials, dynamics, environmental degradation, numerical methods, failure mechanisms and damage mechanics, interfacial fracture and nano-technology, structural analysis, surface behaviour and heart valves. The structures under consideration include: pressure vessels and piping, off-shore structures, gas installations and pipelines, chemical plants, aircraft, railways, bridges, plates and shells, electronic circuits, interfaces, nanotechnology, artificial organs, biomaterial prostheses, cast structures, mining... and more. Case studies will form an integral part of the work.
Author : V. Bicego
Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (125 download)
Download or read book Prediction of Cleavage Fracture Probability for Ferritic Steels in the Transition Region written by V. Bicego and published by . This book was released on 1995 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: A method is described for modelling the stochastic variability of toughness data for ferritic steels in the brittle to ductile transition regime. The present model is based on two ingredients: a weakest link approach using Weibull statistics with a suitable modification to include the effect of ductile tearing, and an accurate expression of the material J-R curve, determined from fractography. The model provides a rationale for the different fracture behaviour of a material over the whole range of temperature, from fully stable J-R behaviour at high temperature down to brittle fracture under LEFM conditions at low temperature.
