Download or read book Multi axial Creep and the LICON Methodology for Accelerated Creep Testing written by William H. Bowyer and published by . This book was released on 2006 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Techniques for Multiaxial Creep Testing written by D. J. Gooch and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: The design and assessment of modern high temperature plant demands an understanding of the creep and rupture behaviour of materials under multi axial stress states. Examples include thread roots in steam turbine casing bolts, branch connections in nuclear pressure vessels and blade root fixings in gas or steam turbine rotors. At one extreme the simple notch weakening/notch strengthening characterization of the material by circumferentially vee-notched uniaxial rupture tests, as specified in many national standards, may be sufficient. These were originally intended to model thread roots and their conservatism is such that they frequently are considered adequate for design purposes. At the other extreme full size or model component tests may be employed to determine the safety margins built into design codes. This latter approach is most commonly used for internally pressurized components, particularly where welds are involved. However, such tests are extremely expensive and the use of modern stress analysis techniques combined with a detailed knowledge of multiaxial properties offers a more economic alternative. Design codes, by their nature, must ensure conservatism and are based on a material's minimum specified properties. In the case of high temperature components the extension of life beyond the nominal design figure, say from 100000 to 200000 h, offers very significant economic benefits. However, this may require a more detailed understanding of the multiaxial behaviour of a specific material than was available at the design stage.

Download or read book Techniques for Multiaxial Creep Testing written by D. J Gooch and published by . This book was released on 1987-01-29 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book High temperature multiaxial creep testing and analysis written by and published by . This book was released on 2004 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings Creep Fracture in High Temperature Components written by I. A. Shibli and published by DEStech Publications, Inc. This book was released on 2009 with total page 661 pages. Available in PDF, EPUB and Kindle. Book excerpt: A compendium of European and worldwide research investigating creep, fatigue and failure behaviors in metals under high-temperature and other service stresses. It helps set the standards for coordinating creep data and for maintaining defect-free quality in high-temperature metals and metal-based weldments.

Download or read book Design and Analysis of Multiaxial Creep Tests written by and published by . This book was released on 1974 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Creep and Creep rupture Under Multiaxial Stress written by Mamdouh Mohamed Abo el Ata and published by . This book was released on 1968 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Creep in Structures VI written by Holm Altenbach and published by Springer Nature. This book was released on 2023-08-04 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a current state of the art in analysis and modeling of creep phenomena with applications to the structural mechanics. It presents the some presentations from the IUTAM-Symposium series "Creep in Structures", which held in Magdeburg (Germany) in September 2023, and it discusses many advances and new results in the field. These are for example: interlinks of mechanics with materials science in multi-scale analysis of deformation and damage mechanisms over a wide range of stresses and temperature; development and analysis of new alloys for (ultra)high-temperature applications; formulation and calibration of advanced constitutive models of inelastic behavior under transient loading and temperature conditions; development of efficient procedures and machine learning techniques for identification of material parameters in advanced constitutive laws; introduction of gradient-enhanced and non-local theories to account for damage and fracture processes; and application of new experimental methods, such as digital image correlation, for the analysis of inelastic deformation under multi-axial stress state.

Download or read book Multiaxial Creep Studies on Inconel at 15000F written by C. R. Kennedy and published by . This book was released on 1959 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design for Creep written by R.K. Penny and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 439 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our rationale for the second edition remains the same as for the first edition, which appeared over twenty years ago. This is to offer simplified, useful and easily understood methods for dealing with the creep of components operating under conditions met in practice. When the first edition was written, we could not claim that the methods which were introduced were well-tried. They were somewhat conjectural, although firmly based, but not sufficiently well devel oped. Since that time, the Reference Stress Methods (RSM) introduced in the book have received much scrutiny and development. The best recognition we could have of the original methods is the fact that they are now firmly embedded in codes of practice. Hopefully, we have now gone a long way towards achieving our original objectives. There are major additions to this second edition which should help to justify our claims. These include further clarification regarding Reference Stress Methods in Chapter 4. There are also new topics which depend on RSM in varying degrees: • Creep fracture is covered in Chapter 7, where methods for assessing creep crack initiation and crack growth are fully described. This chapter starts with a review of the basic concepts of fracture mechanics and follows with useful, approximate methods, compatible with the needs of design for creep and the availability of standard data. • Creep/fatigue interactions and environmental effects appear in Chapter 8.

Download or read book Creep and Damage in Materials and Structures written by Holm Altenbach and published by Springer. This book was released on 2014-05-04 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook gives a concise survey of constitutive and structural modeling for high temperature creep, damage, low – cycle fatigue and other inelastic conditions. The book shows the creep and continuum damage mechanics as rapidly developing discipline which interlinks the material science foundations, the constitutive modeling and computer simulation application to analysis and design of simple engineering components. It is addressed to young researchers and scientists working in the field of mechanics of inelastic, time-dependent materials and structures, as well as to PhD students in computational mechanics, material sciences, mechanical and civil engineering.

Download or read book Applied Creep Mechanics written by Thomas H. Hyde and published by McGraw Hill Professional. This book was released on 2014 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Complete coverage of design and life assessment methods for high-temperature components Applied Creep Mechanics fully discusses the time-dependent deformation which occurs in a metal when subjected to stress at an elevated temperature. This book explains how to perform detailed analyses of welded components; assess the conditions under which cracks may initiate and grow; and extract valuable information about the current state of the material, which may have been in service for many years. This practical guide provides tested techniques for improving the design and life assessment methods for.

Download or read book Advances in Creep Design written by Alastair Ian Smith and published by Halsted Press. This book was released on 1971 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Creep and Fracture in High Temperature Components written by European Creep Collaborative Committee and published by DEStech Publications, Inc. This book was released on 2005 with total page 1136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides information from around the world on creep in multiple high-temperature metals, alloys, and advanced materials.

Download or read book Deterministic Multiaxial Creep and Creep Rupture Enhancements for Cares Creep Integrated Design Code written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-02 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: High temperature and long duration applications of monolithic ceramics can place their failure mode in the creep rupture regime. A previous model advanced by the authors described a methodology by which the creep rupture life of a loaded component can be predicted. That model was based on the life fraction damage accumulation rule in association with the modified Monkman-Grant creep rupture criterion. However, that model did not take into account the deteriorating state of the material due to creep damage (e.g., cavitation) as time elapsed. In addition, the material creep parameters used in that life prediction methodology, were based on uniaxial creep curves displaying primary and secondary creep behavior, with no tertiary regime. The objective of this paper is to present a creep life prediction methodology based on a modified form of the Kachanov-Rabotnov continuum damage mechanics (CDM) theory. In this theory, the uniaxial creep rate is described in terms of sum, temperature, time, and the current state of material damage. This scalar damage state parameter is basically an abstract measure of the current state of material damage due to creep deformation. The damage rate is assumed to vary with stress, temperature, time, and the current state of damage itself. Multiaxial creep and creep rupture formulations of the CDM approach are presented in this paper. Parameter estimation methodologies based on nonlinear regression analysis are also described for both, isothermal constant stress states and anisothermal variable stress conditions This creep life prediction methodology was preliminarily added to the integrated design code CARES/Creep (Ceramics Analysis and Reliability Evaluation of Structures/Creep), which is a postprocessor program to commercially available finite element analysis (FEA) packages. Two examples, showing comparisons between experimental and predicted creep lives of ceramic specimens, are used to demonstrate the viability of Ns methodology and the ...

Download or read book An approach to estimating long term multi axial creep behavior from short term uniaxial creep results written by John Wu-shuang Chuang and published by . This book was released on 1970 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An approach to the prediction of multiaxial creep behavior written by John Wu-Shuang Chuang and published by . This book was released on 1970 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: