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Author : Alexis Ostapenko
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (46 download)
Download or read book Area One written by Alexis Ostapenko and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Alexis Ostapenko
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (34 download)
Download or read book Residual Strength of Damaged and Deterioriated Offshore Structures written by Alexis Ostapenko and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "Ultimate capacity and the post-ultimate residual strength of axially-loaded damaged (dented and/or bent) and deteriorated (corroded) tubular members were studied by conducting tests on eleven salvaged, seven fabricated and two small-scale manufactured column specimens. The nominal (specified minimum) yield stress of the specimens was either 36 or 50 ksi. The salvaged and fabricated specimens had lengths ranging from 22 to 35.4 feet and mid-thickness diameters ranging from 10.4 to 24.5 inches. The specimens had diameter-to-thickness ratios ranging from 28 to 95. All fabricated and small-scale manufactured specimens and four salvaged specimens were dented at mid-length with the dent depth varying from 5% to 15% of the diameter. Of these specimens, two were tested with fixed-ends, two with end eccentricity and nine with pinned ends. Comparison of the tests on the salvaged seamless specimens and the fabricated cold-rolled and welded specimens indicated that residual stresses apparently had little effect on the ultimate strength and the post-ultimate behavior of dented tubular columns. The seven remaining salvaged specimens were tested without denting, and of these, three were corroded, one was badly bent, and three were straight and had no corrosion and thus served as indicators of the original pre-damage strength. Several methods were used to analyze the tested specimens. Comparison with test results indicated that the analytical methods could relatively accurately predict the ultimate strength for dented and undented columns, but were conservative in estimating their post-ultimate behavior. These methods were also suitable for uniformly corroded specimens. However, the behavior of the two specimens with localized corrosion which failed by local buckling could not be predicted by these methods. A limited study was made of an approach for evaluating the effect of localized (patch) corrosion on local buckling and reduction of member strength."
Author : Alexis Ostapenko
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (46 download)
Download or read book Supplement to Area One written by Alexis Ostapenko and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "The moment-thrust-curvature (M-P-[phi]) relationship of grout-repaired dented tubular sections was studied by deriving formulas as functions of the level of deformation. Both materials, steel and concrete, were assumed to have bi-linear elastic-plastic stress-strain relationships except that the grout had no strength in tension and that its post-ultimate strain was limited by the crushing strain. Moreover, it was assumed that the strain distribution in the cross section was planar and that the axial strains in the steel shell and the grout core were fully compatible. By varying the location of the neutral axis and the value of curvature, the relationship between the axial load and curvature could be defined for a given load eccentricity. The ultimate load was given by the peak of the resultant curve. The method was applied to analyze six grouted test specimens: three dented and three undented. The resultant ultimate loads were compared with the test loads and the loads according to the formula proposed by Parsanejad. The method tended to give somewhat higher ultimate loads than the test loads. The method was then used to compute the ultimate loads for seven specimens planned in the testing program proposed for future research. A FORTRAN computer program was written to facilitate the iterative computations involved in the method."
Author : John D. Wood
Publisher :
ISBN 13 :
Total Pages : 71 pages
Book Rating : 4.:/5 (34 download)
Download or read book Residual Strength of Damaged and Deteriorated Offshore Structures written by John D. Wood and published by . This book was released on 1993 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "The structural integrity of offshore oil platforms is of concern because of the possible loss of life and ecological damage that may occur with a structural failure. Therefore, the platforms are nondestructively inspected on a periodic basis. Inspection of the platforms by conventional methods, such as, ultrasonic and magnetic particle testing, is a very labor intensive and costly procedure. Acoustic emission (AE) monitoring is a nondestructive test method that may reduce the cost of offshore evaluation of platforms. This report examines the AE characteristics of various stressed structural steels to determine the feasibility of utilizing the AE monitoring method for offshore applications. In this study, structural columns salvaged from offshore oil platforms as well as newly fabricated columns were tested. With the aid of long column, stub-column and four-point bend specimens, it has been shown that structural steels used for offshore applications exhibit bursts of acoustic emissions from the spalling of the brittle surface layers at the initiation of yielding. Therefore, overloading of a damaged column may be identified with the AE technique. The location of a damaged area on structural columns has also been successfully identified by utilizing the time of arrival analysis and triangulation methods."
Author : Phillip Tirabosco
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (22 download)
Download or read book Damage and Residual Strength of Tubular Steel Members Used in Offshore Structures written by Phillip Tirabosco and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ashok Gupta
Publisher : Springer Science & Business Media
ISBN 13 : 364282899X
Total Pages : 312 pages
Book Rating : 4.6/5 (428 download)
Download or read book Fatigue Behaviour of Offshore Structures written by Ashok Gupta and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: and Literature Rev iew Chapter 1 1. INTRODUCTION AND LITERATURE REVIEW The exploration for oil and gas in ever increasing water depths has given an impetus to research efforts on the behaviour of offshore structures under ocean environment. These structures are continuously subjected to environmental loading because of waves, wind and current. A response analysis is required to assess the safety of offshore structure under severe storm conditions as well as for estimation of damage caused by less severe but more frequently occuring sea states. A majority of the reported failures in the life time of offshore structures are in fact fatigue failures. The offshore structures are usually built in the form of welded tubular structures. The joints of these tubular members experience the fatigue damage mainly due to small defects in welding which act as crack initiators, high stress concentrations and the variable loads. The variable loads due to the ocean waves cause cyclic stress variation in the structural members and the accumu lated effect of these stresses results in the fatigue failure.
Author : Dhruba J. Ghose
Publisher :
ISBN 13 :
Total Pages : 160 pages
Book Rating : 4.:/5 (329 download)
Download or read book Residual Strength of Damaged Marine Structures written by Dhruba J. Ghose and published by . This book was released on 1994 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Gerhard Ersdal
Publisher : John Wiley & Sons
ISBN 13 : 1119284406
Total Pages : 216 pages
Book Rating : 4.1/5 (192 download)
Download or read book Ageing and Life Extension of Offshore Structures written by Gerhard Ersdal and published by John Wiley & Sons. This book was released on 2018-12-11 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive overview of managing and assessing safety and functionality of ageing offshore structures and pipelines A significant proportion, estimated at over 50%, of the worldwide infrastructure of offshore structures and pipelines is in a life extension phase and is vulnerable to ageing processes. This book captures the central elements of the management of ageing offshore structures and pipelines in the life extension phase. The book gives an overview of: the relevant ageing processes and hazards; how ageing processes are managed through the life cycle, including an overview of structural integrity management; how an engineer should go about assessing a structure that is to be operated beyond its original design life, and how ageing can be mitigated for safe and effective continued operation. Key Features: Provides an understanding of ageing processes and how these can be mitigated. Applies engineering methods to ensure that existing structures can be operated longer rather than decommissioned unduly prematurely. Helps engineers performing these tasks in both evaluating the existing structures and maintaining ageing structures in a safe manner. The book gives an updated summary of current practice and research on the topic of the management of ageing structures and pipelines in the life extension phase but also meets the needs of structural engineering students and practicing offshore and structural engineers in oil & gas and engineering companies. In addition, it should be of value to regulators of the offshore industry.
Author : D. Faulkner
Publisher : CRC Press
ISBN 13 : 100010222X
Total Pages : 640 pages
Book Rating : 4.0/5 (1 download)
Download or read book Integrity of Offshore Structures written by D. Faulkner and published by CRC Press. This book was released on 2022-01-27 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt: Papers presented at the Fourth International Symposium on Integrity of Offshore Structures, 2-3 July 1990, Kelvin Conference Centre, University of Glasgow, Scotland organized by the Department of Naval Architecture and Ocean Engineering and Mechanical Engineering.
Author :
Publisher :
ISBN 13 :
Total Pages : 254 pages
Book Rating : 4.3/5 ( download)
Download or read book Guide to Damage Tolerance Analysis of Marine Structures written by and published by . This book was released on 1997 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Srinivasan Chandrasekaran
Publisher : CRC Press
ISBN 13 : 1315350432
Total Pages : 245 pages
Book Rating : 4.3/5 (153 download)
Download or read book Offshore Structural Engineering written by Srinivasan Chandrasekaran and published by CRC Press. This book was released on 2017-12-19 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: Successfully estimate risk and reliability, and produce innovative, yet reliable designs using the approaches outlined in Offshore Structural Engineering: Reliability and Risk Assessment. A hands-on guide for practicing professionals, this book covers the reliability of offshore structures with an emphasis on the safety and reliability of offshore facilities during analysis, design, inspection, and planning. Since risk assessment and reliability estimates are often based on probability, the author utilizes concepts of probability and statistical analysis to address the risks and uncertainties involved in design. He explains the concepts with clear illustrations and tutorials, provides a chapter on probability theory, and covers various stages of the process that include data collection, analysis, design and construction, and commissioning. In addition, the author discusses advances in geometric structural forms for deep-water oil exploration, the rational treatment of uncertainties in structural engineering, and the safety and serviceability of civil engineering and other offshore structures. An invaluable guide to innovative and reliable structural design, this book: Defines the structural reliability theory Explains the reliability analysis of structures Examines the reliability of offshore structures Describes the probabilistic distribution for important loading variables Includes methods of reliability analysis Addresses risk assessment and more Offshore Structural Engineering: Reliability and Risk Assessment provides an in-depth analysis of risk analysis and assessment and highlights important aspects of offshore structural reliability. The book serves as a practical reference to engineers and students involved in naval architecture, ocean engineering, civil/structural, and petroleum engineering.
Author : C. P. Ellinas
Publisher :
ISBN 13 :
Total Pages : 520 pages
Book Rating : 4.:/5 (318 download)
Download or read book Buckling of Offshore Structures written by C. P. Ellinas and published by . This book was released on 1984 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Inge Lotsberg
Publisher : Cambridge University Press
ISBN 13 : 1107121337
Total Pages : 559 pages
Book Rating : 4.1/5 (71 download)
Download or read book Fatigue Design of Marine Structures written by Inge Lotsberg and published by Cambridge University Press. This book was released on 2016-04-13 with total page 559 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a theoretical and practical guide for fatigue design of marine structures including sailing ships and offshore oil structures.
Author : Günther Clauss
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (91 download)
Download or read book Offshore Structures: Strength and safety for structural design written by Günther Clauss and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : J. Bos
Publisher :
ISBN 13 :
Total Pages : 49 pages
Book Rating : 4.:/5 (661 download)
Download or read book The Residual Strength of a Damaged Surface Ship written by J. Bos and published by . This book was released on 1996 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : James F. Wilson
Publisher : John Wiley & Sons
ISBN 13 :
Total Pages : 352 pages
Book Rating : 4.3/5 (91 download)
Download or read book Dynamics of Offshore Structures written by James F. Wilson and published by John Wiley & Sons. This book was released on 2003 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Table of contents
Author : John V. Sharp
Publisher : John Wiley & Sons
ISBN 13 : 1119633818
Total Pages : 368 pages
Book Rating : 4.1/5 (196 download)
Download or read book Underwater Inspection and Repair for Offshore Structures written by John V. Sharp and published by John Wiley & Sons. This book was released on 2021-04-06 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: UNDERWATER INSPECTION AND REPAIR FOR OFFSHORE STRUCTURES Benefit from a much-needed, up-to-date handbook on underwater inspection and repair processes and technologies Underwater Inspection and Repair for Offshore Structures fills a gap in the literature to provide an overview of the inspection and repair processes for both steel and concrete offshore structures. Authors and noted experts on the topic John V. Sharp and Gerhard Esdal guide readers through the reasons why inspection and repair are performed and how both are linked to the management of structural integrity, statutory requirements, and various types of damage. The book addresses critical topics, including the execution and planning of inspection and repair, the tools and methods used, and their deployment underwater. The authors put particular focus on steel and concrete offshore oil and gas installations, but the content is also applicable to the substructures of offshore wind turbines. Underwater Inspection and Repair for Offshore Structures is complementary to the authors’ book Ageing and Life Extension of Offshore Structures, also from Wiley. This important book: Covers current inspection and monitoring techniques to evaluate existing structures Includes coverage of robotic (ROV) inspection and repair methods Provides an overview of repair and maintenance techniques applicable to the splash‐zone and underwater operations Written for engineers, designers, and safety auditors working with offshore structures. Underwater Inspection and Repair for Offshore Structures is a comprehensive resource for understanding how to effectively inspect and repair these vulnerable structures.
