Fracture Mechanics of Through-cracked Cylindrical Pressure Vessels PDF Download
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Author: Robert B. Anderson Publisher: ISBN: Category : Fracture mechanics Languages : en Pages : 44
Book Description
The application of some fracture mechanics concepts to the prediction of the strength of pressure vessels in which cracks have penetrated entirely through the vessel wall is examined. The strength of cylindrical pressure vessels (with longitudinal through-cracks) is related to the geometry of the cylinder, the crack length, the material yield strength, and fracture toughness. An expression for the crack tip stress intensity factor is derived by considering the influence on the stress near the crack tip of membrane stressing in the cylinder and of bending caused by bulging of the partially constrained material on either side of the crack. The form of the derived expression is verified and empirical constants evaluated from burst data at -320 and -423 F of aluminum alloy (2014-T6 A1) and extra-low-interstitial (ELI) titanium alloy (5A1-2. 5Sn-Ti) The analysis, basdd on the Irwin fracture theory, provides a suitable means for the correlation of the strength of flat-sheet specimens with that of cracked pressurized cylinders. The correlation suggests that the fracture strength of through-cracked cylinders of any radius, crack length, and thickness can be determined from material toughness, yield strength, and a bulge coefficient. Neglect of the effect of pressure bulging in the fracture analysis of pressurized cylinders can cause a significant overestimate of the fracture strength.
Author: Robert B. Anderson Publisher: ISBN: Category : Fracture mechanics Languages : en Pages : 44
Book Description
The application of some fracture mechanics concepts to the prediction of the strength of pressure vessels in which cracks have penetrated entirely through the vessel wall is examined. The strength of cylindrical pressure vessels (with longitudinal through-cracks) is related to the geometry of the cylinder, the crack length, the material yield strength, and fracture toughness. An expression for the crack tip stress intensity factor is derived by considering the influence on the stress near the crack tip of membrane stressing in the cylinder and of bending caused by bulging of the partially constrained material on either side of the crack. The form of the derived expression is verified and empirical constants evaluated from burst data at -320 and -423 F of aluminum alloy (2014-T6 A1) and extra-low-interstitial (ELI) titanium alloy (5A1-2. 5Sn-Ti) The analysis, basdd on the Irwin fracture theory, provides a suitable means for the correlation of the strength of flat-sheet specimens with that of cracked pressurized cylinders. The correlation suggests that the fracture strength of through-cracked cylinders of any radius, crack length, and thickness can be determined from material toughness, yield strength, and a bulge coefficient. Neglect of the effect of pressure bulging in the fracture analysis of pressurized cylinders can cause a significant overestimate of the fracture strength.
Author: John E. Srawley Publisher: ISBN: Category : Fracture mechanics Languages : en Pages : 80
Book Description
A comprehensive survey is presented of current methods of fracture toughness testing that are based on linear elastic fracture mechanics. General principles are discussed in relation to the basic two-dimensional crack stress field model and in relation to real three-dimensional specimens. The designs and necessary dimensions of specimens for mixed mode and opening mode (plane strain) crack toughness measurement are considered in detail. Methods of test instrumentation and procedure are described. Expressions for the calculation of crack toughness values are given for the common types of specimens.
Author: Srečko Glodež Publisher: Cambridge Scholars Publishing ISBN: 1527556549 Category : Technology & Engineering Languages : en Pages : 175
Book Description
Many people find the concept of fracture and damage mechanics to be somewhat problematic, mainly because, until recently, close attention in mechanics was focused especially on the strength and resistance of materials. In this sense, to speak of fracture is as uncomfortable for some as it is to speak of a deadly disease. In confronting and preventing a fatal disease, one must understand its complexity, symptoms, and behavior; by the same token, in securing the strength of an engineering structure, one must understand the reasons and type of its potential failure. This book will provide knowledge and insights on this matter to its readers.
Author: D. Broek Publisher: Springer Science & Business Media ISBN: 9400943334 Category : Science Languages : en Pages : 480
Book Description
When asked to start teaching a course on engineering fracture mechanics, I realized that a concise textbook, giving a general oversight of the field, did not exist. The explanation is undoubtedly that the subject is still in a stage of early development, and that the methodologies have still a very limited applicability. It is not possible to give rules for general application of fracture mechanics concepts. Yet our comprehension of cracking and fracture beha viour of materials and structures is steadily increasing. Further developments may be expected in the not too distant future, enabling useful prediction of fracture safety and fracture characteristics on the basis of advanced fracture mechanics procedures. The user of such advanced procedures m\lst have a general understanding of the elementary concepts, which are provided by this volume. Emphasis was placed on the practical application of fracture mechanics, but it was aimed to treat the subject in a way that may interest both metallurgists and engineers. For the latter, some general knowledge of fracture mechanisms and fracture criteria is indispensable for an apprecia tion of the limita tions of fracture mechanics. Therefore a general discussion is provided on fracture mechanisms, fracture criteria, and other metal lurgical aspects, without going into much detail. Numerous references are provided to enable a more detailed study of these subjects which are still in a stage of speculative treatment.
Author: Publisher: ISBN: Category : Aeronautics Languages : en Pages : 666
Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author: Robert B. Anderson
Author: Robert B. Anderson
Author: ASTM Committee E-24 Staff
Author: 
Author: John E. Srawley
Author: Michael Janssen
Author: Genki Yagawa
Author: Thomas A. Cruse
Author: Srečko Glodež
Author: D. Broek
Author: