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Keywords: brittle fracture
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Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-493
... of brittle fracture in the trial-designed LNG tank made of 7%Ni-TMCP steel. INTRODUCTION Among fossil fuels, natural gas is a clean energy source with low environmental impact. The introduction of renewable energy to achieve a decarbonized society is expected to increase the demand for natural gas...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-438
... ABSTRACT Duplex stainless steels are ideal for steel structures exposed to low temperatures and fatigue loading. However, it has to be guaranteed that brittle fracture is avoided in low temperature applications due to the fact that duplex stainless steel shows a toughness-temperature...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-4124
... crack length to cylinder axial length. And radius to thickness ratio would be related to the reduction of buckling load. metals & mining polar engineering conference international ocean thirty-first cylindrical pipe cylinder ifayefunmi brittle fracture orientation crack length...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-444
... tested under cyclic loads. Complete join penetration groove welds were used for the connection between the beam flange and diaphragm. The load was applied to the end of the beam end by a hydraulic ram dynamically. The prediction of brittle fracture with various sizes of ductile crack at the toe of beam...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-443
... ABSTRACT This paper concerns the applicability of prediction approach of brittle fracture initiated at toes of weld access hole. In order to find suitable shape of beams copes in the field-welded joint, the cyclic loading tests using beam-to-diaphragm joint models, which were designated...
Proceedings Papers

Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-467
..., the connections are exposed to low temperatures. To close the lack of knowledge on low temperature behaviour of these bolts, systematic investigations were carried out to determine the tendency of brittle fracture of high-strength bolts with large diameters. This paper presents the main results...
Proceedings Papers

Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-615
... ABSTRACT Ensuring and enhancing the toughness of weld heat affected zone (HAZ) of steel has become increasingly difficult due to higher strength of steels, risk of brittle fracture being higher. Under these circumstances, the authors developed a numerical model for predicting HAZ toughness...
Proceedings Papers

Paper presented at the The 26th International Ocean and Polar Engineering Conference, June 26–July 2, 2016
Paper Number: ISOPE-I-16-223
... ductile fractures is one of the required properties for high strength line pipe steels as cracks must be arrested, even if a brittle fracture occurs from welds such as girth welds. Cracks must also be arrested if the line pipe body is subject to ductile fractures. The DWTT (Drop Weight Tear Test) (Eiber...
Proceedings Papers

Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, June 21–26, 2015
Paper Number: ISOPE-I-15-708
... during DWTT. The effect of inverse fracture on crack arrestability was also investigated. In addition, the effect of pre-strain on occurrence of brittle fracture was investigated, by measuring the fracture toughness (crack tip opening displacement) of specimens taken from static pre-bended DWTT specimens...
Proceedings Papers

Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, June 21–26, 2015
Paper Number: ISOPE-I-15-793
... data is not available, a correction of yield stress and Lüders band development at low temperature based on the yield stress at room temperature is proposed. The effect of temperature dependent material properties on brittle fracture is studied using cohesive zone model. low temperature lüders...
Proceedings Papers

Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, June 21–26, 2015
Paper Number: ISOPE-I-15-436
... Abstract This paper concerns the applicability of two approaches for prediction of brittle fracture in the beam-to-column connection. One is a method using Weibull stress approach, the other is a method based on toughness scaling model (TSM). The experiments using beam-tocolumn joint models...
Proceedings Papers

Paper presented at the The Twenty-fourth International Ocean and Polar Engineering Conference, June 15–20, 2014
Paper Number: ISOPE-I-14-609
... Engineering Society. Finally, new standard was published in January 2014 as JWES standard. metals & mining brittle fracture upstream oil & gas thickness crack length test specimen initiation arrest toughness impact energy toughness equation evaluation test method crack arrest...
Proceedings Papers

Paper presented at the The Twenty-third International Offshore and Polar Engineering Conference, June 30–July 5, 2013
Paper Number: ISOPE-I-13-562
.... In estimating the critical CTOD to brittle fracture in structural component with large residual stress distribution, it is important to take account of that secondary stress effect. This paper presents the effect of weld residual stress on critical CTOD to brittle fracture at lower shelf temperature...
Proceedings Papers

Paper presented at the The Twenty-third International Offshore and Polar Engineering Conference, June 30–July 5, 2013
Paper Number: ISOPE-I-13-542
... metal specimen ductile compression brittle fracture base material low temperature installation configuration test joint Reeling Installation of Rigid Steel Pipelines at Low Temperature Espen Heier1, Erling Østby2 and Odd M. Akselsen2,3 1 Technip, Sandvika, Norway 2 SINTEF, Trondheim, Norway...
Proceedings Papers

Paper presented at the The Twenty-second International Offshore and Polar Engineering Conference, June 17–22, 2012
Paper Number: ISOPE-I-12-628
... importance for the choice of the steel quality with regard to the use of these profiles at low temperatures. In the frame of Eurocode 3, the choice of steel material to avoid brittle fracture is performed by means of a fracture mechanic based concept according to EN 1993-1-10, see also Sedlacek et al (2008...
Proceedings Papers

Paper presented at the The Twenty-second International Offshore and Polar Engineering Conference, June 17–22, 2012
Paper Number: ISOPE-I-12-618
...-grade, best grade of ordinary ship steels in toughness, posses suitable or sufficient arrestability for prevention of brittle fracture. kca value steel plate energy consumption specimen impact test steel thickness brittle crack drop weight test metals & mining brittle fracture fatt...
Proceedings Papers

Paper presented at the The Twenty-first International Offshore and Polar Engineering Conference, June 19–24, 2011
Paper Number: ISOPE-I-11-134
... surface flaws have been analysed. upstream oil & gas hydraulic fracturing selection brittle fracture residual stress qualification steel probability weld metal annual probability offshore iso 19906 application flaw size material selection toughness requirement fracture...

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