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Book Ductile Fracture of Circumferentially Cracked Pipes Subjected to Bending Loads

Download or read book Ductile Fracture of Circumferentially Cracked Pipes Subjected to Bending Loads written by A. Zahoor and published by . This book was released on 1983 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: A plastic fracture mechanics methodology is presented for part-through cracks in pipes under bending. A previous analysis result on the behavior of part-through cracks in pipes is reviewed. Example quantitative results for the initiation and instability of radial growth of part-through cracks are presented and compared with the experimental data to demonstrate the applicability of the method. The analyses in our previous work are further developed to include the instability of circumferential growth of part-through cracks. Numerical results are then presented for a compliant piping system, under displacement controlled bending, which focus on (1) instability of radial growth (unstable wall breakthrough) and (2) instability of circumferential growth of the resulting through-the-thickness crack. The combined results of the above two types of analyses are presented on a safety assessment diagram. This diagram defines a curve of critical combination of length and depth of part-through cracks which delineates leak from fracture. The effect of piping compliance on the leak-before-break assessment is discussed.

Book Circumferential Cracks in Pressure Vessels and Piping Analytical evaluation Experimental evaluation Instability and dynamic behavior

Download or read book Circumferential Cracks in Pressure Vessels and Piping Analytical evaluation Experimental evaluation Instability and dynamic behavior written by G. M. Wilkowski and published by . This book was released on 1984 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Circumferential Cracks in Pressure Vessels and Piping

Download or read book Circumferential Cracks in Pressure Vessels and Piping written by G. M. Wilkowski and published by . This book was released on 1984 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Fracture of Circumferentially Cracked Type 304 Stainless Steel Pipes Under Dynamic Loading

Download or read book Fracture of Circumferentially Cracked Type 304 Stainless Steel Pipes Under Dynamic Loading written by GM. Wilkowski and published by . This book was released on 1983 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: A program of experimentation and analysis aimed at determining fracture instability in circumferentially cracked Type 304 stainless steel pipes in seismic or water-hammer loadings is described. Experimental work on center-cracked tension panels revealed that dynamic loading does not affect the net-section stress criterion evolved previously for Type 304 stainless steel. Full-scale tests on 100-mm-diameter (4 in.) pipes subjected to a dynamic load nevertheless indicate that a margin of safety exists beyond that predicted by the application of the net-section stress criterion. It is concluded that the finite duration of a dynamic loading together with the system compliance which allows stable crack growth beyond maximum load is primarily responsible. A J-based plastic fracture mechanics assessment based upon rate-dependent mechanical and fracture properties of the material was made and found to be consistent with this hypothesis.

Book Elastic plastic Fracture Behavior of Circumferentially Cracked Pipes

Download or read book Elastic plastic Fracture Behavior of Circumferentially Cracked Pipes written by Jacob John Foxen and published by . This book was released on 1997 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book NRC Leak before break LBB NRC Analysis Method for Circumferentially Through wall Cracked Pipes Under Axial Plus Bending Loads

Download or read book NRC Leak before break LBB NRC Analysis Method for Circumferentially Through wall Cracked Pipes Under Axial Plus Bending Loads written by R. Klecker and published by . This book was released on 1986 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Tearing of Circumferential Cracks in Pipes Loaded by Bending

Download or read book Tearing of Circumferential Cracks in Pipes Loaded by Bending written by J. Lyell Sanders and published by . This book was released on 1986 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: The paper develops a theory of tearing for circumferential through-cracks in pipes. Resistance to tearing is postulated to be a consequence of invariance in shape at the tip of a growing crack.

Book Simplified analysis of tearing instability for circumferentially cracked pipe

Download or read book Simplified analysis of tearing instability for circumferentially cracked pipe written by Koichi Kashima and published by . This book was released on 1983 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Comprehensive Structural Integrity

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.

Book Board of Contract Appeals Decisions

Download or read book Board of Contract Appeals Decisions written by United States. Armed Services Board of Contract Appeals and published by . This book was released on 1973 with total page 1480 pages. Available in PDF, EPUB and Kindle. Book excerpt: The full texts of Armed Services and othr Boards of Contract Appeals decisions on contracts appeals.

Book J integral of Circumferential Crack in Large Diameter Pipes

Download or read book J integral of Circumferential Crack in Large Diameter Pipes written by and published by . This book was released on 1992 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Large diameter thin-walled pipes are encountered in low pressure nuclear power piping system. Fracture parameters such as K and J, associated with postulated cracks are needed to assess the safety of the structure, for example, prediction of the onset of tile crack growth and the stability of the crack. The Electric Power Research Institute (EPRI) has completed a comprehensive study of cracks in pipes and handbook-type data is available. However, for some large diameter, thin-walled pipes the needed information is not included in the handbook. This paper reports our study of circumferential cracks in large diameter, thin-walled pipes (R/t=30 to 40) under remote bending or tension loads. Elastic-Plastic analyses using finite element method were performed to determine the elastic and fully plastic J values for various pipe/crack geometries. A non-linear Ramberg-Osgood material model is used, with strain hardening exponents(n) ranging from 3 to 10. A number of circumferential, through thickness cracks were studied with half crack angles ranging from 0.063[pi] to 0.5[pi]. Results are tabulated for use with the EPRI estimation scheme.