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Author : P. S. B. Colback
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (14 download)
Download or read book An analysis of brittle fracture initiation and propagation in the Brazilian test written by P. S. B. Colback and published by . This book was released on 1967 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Antonio A. Munjiza
Publisher : John Wiley & Sons
ISBN 13 : 0470020172
Total Pages : 348 pages
Book Rating : 4.4/5 (7 download)
Download or read book The Combined Finite-Discrete Element Method written by Antonio A. Munjiza and published by John Wiley & Sons. This book was released on 2004-04-21 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: The combined finite discrete element method is a relatively new computational tool aimed at problems involving static and / or dynamic behaviour of systems involving a large number of solid deformable bodies. Such problems include fragmentation using explosives (e.g rock blasting), impacts, demolition (collapsing buildings), blast loads, digging and loading processes, and powder technology. The combined finite-discrete element method - a natural extension of both discrete and finite element methods - allows researchers to model problems involving the deformability of either one solid body, a large number of bodies, or a solid body which fragments (e.g. in rock blasting applications a more or less intact rock mass is transformed into a pile of solid rock fragments of different sizes, which interact with each other). The topic is gaining in importance, and is at the forefront of some of the current efforts in computational modeling of the failure of solids. * Accompanying source codes plus input and output files available on the Internet * Important applications such as mining engineering, rock blasting and petroleum engineering * Includes practical examples of applications areas Essential reading for postgraduates, researchers and software engineers working in mechanical engineering.
Author : Shehab Sherif Wissa Agaiby
Publisher :
ISBN 13 :
Total Pages : 251 pages
Book Rating : 4.:/5 (872 download)
Download or read book Fracture Characterization of Clays and Clay-like Materials Using Flattened Brazilian Test written by Shehab Sherif Wissa Agaiby and published by . This book was released on 2013 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fracture mechanics has been used for many years to study the mechanical behavior of brittle and quasi-brittle materials like concrete, rock, wood, and ceramics. To date, the application of fracture mechanics to soils has been limited to dry and partially saturated soils where soil consistency changes due to suction and tends to be harder exhibiting a quasi-brittle behavior. Of late, studying fracture propagation in clays and mudrocks has become of interest as it provides a means to extract oil from oil bearing strata. While crack initiation in soils can be analyzed using basic soil mechanics theories, development and propagation of a crack is energy driven and requires application of fracture mechanics principles. An essential parameter in Linear Elastic Fracture Mechanics (LEFM), the main analytical tool in studying fracture in rock, is the critical stress intensity factor that defines stress concentration near a crack tip beyond which a fracture would propagate. The basic mode of crack loading can be obtained by applying a normal stress that has a corresponding opening mode of crack surface displacement, called mode-I (tensile mode), with a critical stress intensity factor termed fracture toughness, denoted by KIC. In this experimental research, KIC is measured indirectly using a modified Brazilian Test configuration where load is applied normally on flattened Brazilian disk specimens without the need to introduce a flaw into the specimen. Intact natural specimens from four different deposits; Boston Blue clay, San Francisco Bay Mud, Presumpscot Maine clay, and Gulf of Mexico clay; are tested in oven-dried state under atmospheric conditions. In addition, two Clay-like materials; molded Gypsum and Plaster of Paris; have been investigated. Based on the analysis of the test data, the relation between mode I fracture toughness and tensile strength for the six tested materials agrees to a great extent with reported trends in the literature even for different fracture toughness and tensile strength testing techniques and for wider tested range of soils, rocks, geomaterials, clay-like, and rock-like materials. However, no clear relation between mode I fracture toughness and elastic modulus or any other physical parameter was determined.
Author : Stephen W. Freiman
Publisher : John Wiley & Sons
ISBN 13 : 1118147782
Total Pages : 197 pages
Book Rating : 4.1/5 (181 download)
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 2012-02-03 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: Supports the use and development of strong, fracture-resistant, and mechanically reliable ceramic materials The Fracture of Brittle Materials thoroughly sets forth the key scientific and engineering concepts underlying the selection of test procedures for fracture toughness, strength determination, and reliability predictions. With this book as their guide, readers can confidently test and analyze a broad range of brittle materials in order to make the best use of existing materials as well as to support the development of new materials. The authors explain the importance of microstructure in these determinations and describe the use of quantitative fractography in failure analysis. The Fracture of Brittle Materials is relevant to a broad range of ceramic materials (i.e., any inorganic non-metal), including semiconductors, cements and concrete, oxides, carbides, and nitrides. The book covers such topics as: Basic principles of fracture mechanics underlying brittle material tests and analysis procedures Theory and mechanisms of environmentally enhanced crack growth Fracture mechanics tests to determine a material's resistance to fast fracture Test and analysis methods to assess the strength of ceramics Methods to analyze the fracture process based on quantitative measurements of the fracture surface Effect of a material's microstructure Methods for predicting the lifetime of brittle components under stress Throughout the book, figures and illustrations help readers understand key concepts and methods. Replete with real-world examples, this text enables engineers and materials and ceramics scientists to select and implement the optimal testing methods for their particular research needs and then accurately analyze the results.
Author :
Publisher :
ISBN 13 :
Total Pages : 1436 pages
Book Rating : 4.E/5 ( download)
Download or read book Geophysical Abstracts ... written by and published by . This book was released on 1967 with total page 1436 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : International Society for Rock Mechanics
Publisher :
ISBN 13 :
Total Pages : 826 pages
Book Rating : 4.F/5 ( download)
Download or read book Proceedings of the First Congress written by International Society for Rock Mechanics and published by . This book was released on 1967 with total page 826 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Geological Survey (U.S.)
Publisher :
ISBN 13 :
Total Pages : 1278 pages
Book Rating : 4.3/5 (91 download)
Download or read book Geophysical Abstracts written by Geological Survey (U.S.) and published by . This book was released on 1967 with total page 1278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Laureano R. Hoyos
Publisher : Springer
ISBN 13 : 3319619314
Total Pages : 231 pages
Book Rating : 4.3/5 (196 download)
Download or read book Advances in Characterization and Analysis of Expansive Soils and Rocks written by Laureano R. Hoyos and published by Springer. This book was released on 2017-07-11 with total page 231 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume includes a collection of technical papers covering two important research topics in geotechnical engineering: (1) the behavior and treatment of expansive soils, and (2) the characterization of rock properties. The twelve studies on expansive soils include investigations into novel stabilization techniques for expansive soils using different admixtures or mechanical consolidation techniques, as well as new experimental approaches to evaluate the behavior of expansive soils. They also include an evaluation of wetting boundary conditions on the volume change of expansive soils, as well as the role of hydrologic boundary conditions in arid climates. The four studies on rock properties include thermo-hydro-mechanical behavior of gypsum rock, role of rock strength in blastability, indirect methods to estimate rock strength, and variations in isotope distributions in Permian rocks. The two broad themes in this collection, as summarized above, are representative of local challenges facing geotechnical engineers in the Middle East, but their contributions can also be extended to other regions of the world. This volume is part of the proceedings of the 1st GeoMEast International Congress and Exhibition on Sustainable Civil Infrastructures, Egypt 2017.
Author : Z. T. Bieniawski
Publisher :
ISBN 13 :
Total Pages : 486 pages
Book Rating : 4.F/5 ( download)
Download or read book Mechanism of Brittle Fracture of Rock written by Z. T. Bieniawski and published by . This book was released on 1967 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : International Society for Rock Mechanics
Publisher :
ISBN 13 :
Total Pages : 826 pages
Book Rating : 4.E/5 ( download)
Download or read book Proceedings of the First Congress. Lisbon, 25th September-1st October, 1966 written by International Society for Rock Mechanics and published by . This book was released on 1966 with total page 826 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 700 pages
Book Rating : 4.:/5 (319 download)
Download or read book CRREL Report written by and published by . This book was released on 1993 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : William Joel Hall
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (958 download)
Download or read book Summary of Some Studies of Brittle-fracture Propagation written by William Joel Hall and published by . This book was released on 1963 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Six-foot-wide plain plate specimens tested at an average applied stress of about 20 ksi, a temperature of 0 F, and with the notch-wedgeimpact method of initiation, produced fracture speeds in the range of 2000 to 4000 fps. Sixfoot-wide prestressed steel plates with a region of high tensile residual strain at each edge, and a region of residual compression in the central portion, tested at zero or 3 ksi average applied stress, at 0 F, and with impact initiation, produced fracture speeds of 6000 fps in the tensile zone near the initiation source, and speeds as low as 50 fps. Two-foot-wide centrally notched and welded specimens fabricated in different ways and tested at an average applied stress of about 10 ksi and a temperature of -40 F, produced speed within 1 1/2 inches of the initiation source and in a region of high residual tensile stress as high as 5000 fps; whereas speeds throughout the remainder of the specimen, which initially possessed a low compressive residual stress, were on the order of 1800 fps. (Author).
Author :
Publisher :
ISBN 13 :
Total Pages : 556 pages
Book Rating : 4.:/5 (31 download)
Download or read book Proceedings, Third Eastern Gas Shales Symposium, October 1-3, 1979, Lakeview Inn, Morgantown, West Virginia written by and published by . This book was released on 1979 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : A. L. Bernent
Publisher :
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 (125 download)
Download or read book Applications of Fracture Mechanics in Evaluating Initiation and Propagation of Brittle Fracture in Reactor Structural Components written by A. L. Bernent and published by . This book was released on 1967 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Several fracture mechanics studies are being conducted to determine the effects of reactor environments and fabrication variables on the fracture characteristics of materials. Testing procedures have been developed for measuring the plane strain stress intensity for both crack initiation and arrest over a wide temperature range. Special techniques are described for evaluating the fracture toughness profile across the fusion and heat affected zone in postweld heat treated A302-B, the effects of neutron irradiation on the fracture toughness of Zircaloy-2, and the subcritical crack growth in a high strength steel. Data from these studies are presented, and the various applications of the data to reactor components through the use of fracture mechanics are discussed.
Author : Roberto Tomás
Publisher : CRC Press
ISBN 13 : 1040225756
Total Pages : 1585 pages
Book Rating : 4.0/5 (42 download)
Download or read book New Challenges in Rock Mechanics and Rock Engineering written by Roberto Tomás and published by CRC Press. This book was released on 2024-07-29 with total page 1585 pages. Available in PDF, EPUB and Kindle. Book excerpt: New Challenges in Rock Mechanics and Rock Engineering includes the contributions presented at the ISRM European Rock Mechanics Symposium Eurock 2024 (Alicante, Spain, 15-19 July 2024), and explores cutting-edge advancements in rock mechanics and rock engineering. This comprehensive compilation covers various aspects of rock mechanics and rock engineering, including: rock properties, testing methods, infrastructure and mining rock mechanics, design analysis, stone heritage preservation, geophysics, numerical modeling, monitoring techniques, underground excavation support, risk assessment, and the application of EUROCODE-7 in rock engineering. Furthermore, it addresses areas like geomechanics for the oil and gas industry, applications of artificial intelligence, remote sensing methodologies and geothermal technology. New Challenges in Rock Mechanics and Rock Engineering covers the latest breakthroughs and tackles the new challenges in rock mechanics and rock engineering, is aimed at scientists and professionals in these fields, and serves as an essential resource for keeping up to date with industry trends and solutions.
Author :
Publisher :
ISBN 13 :
Total Pages : 1124 pages
Book Rating : 4.:/5 (89 download)
Download or read book Journal of the Maharaja Sayajirao University of Baroda written by and published by . This book was released on 1980 with total page 1124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
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ISBN 13 :
Total Pages : 968 pages
Book Rating : 4.F/5 ( download)
Download or read book Proceedings of the ... International Conference on Fracture written by and published by . This book was released on 1969 with total page 968 pages. Available in PDF, EPUB and Kindle. Book excerpt:
