...Proceedings of the Thirty-third (2023) International Ocean and Polar Engineering Conference Ottawa, Canada, June 19-23, 2023 Copyright © 2023 by the International Society of Offshore and Polar Engineers (ISOPE) ISBN 978-1-880653-80-7; ISSN 1098-6189 www.isope.org A Crack Propagation Life...

... (stressstrain curve, static and quasistatic crack propagation resistance). In order to evaluate the limit states for pipelines to transport H2, representative materials property input for all the above parameters must be established in the presence of H2. Hence, there is a need to have quantitative knowledge...

... are compared against various experimental observations and the previous predictions from the virtual internal bond (VIB) numerical method. It is found that the PD simulations capture concrete crack propagation and branching that are in agreement with experimental observations. PD theory is a suitable analysis...

... to study the crack closure effect in the process of low-cycle fatigue crack propagation of three-dimensional surface cracked slabs in Marine structures, based on the theory of elastic-plastic fracture mechanics and crack closure theory, the finite element numerical simulation of ABAQUS was used to obtain...

... depth was around 1.0 mm, crack propagated. It was found that the deeper the hard-zone, the easier the crack propagates. In order to investigate the effect of H2S partial pressure, 4PB SSC test at 16 bar H2S partial pressure condition was conducted. As a result, crack propagated even in the shallower...

... temperature and initiates crack propagation toward a higher temperature region where the crack stopped due to the improved fracture toughness. The relationship between the toughness and crackarrest temperature provides the KIa at −10 °C of about 2700 and 2200 N/mm3/2 in the low and high heat-input weld...

... alloying element. Also, Ni can enhance the stability of γ-Fe between martensite-lath which leads to improved toughness. In this study, deformation induced transformation of γ-Fe and stress relaxation effect are investigated as a toughnening mechanism of 9% Ni steels during brittle crack propagation tests...

... ABSTRACT The influence of a pipe's internal pressure on the critical strain at rupture and on ductile crack propagation is investigated. Full-scale tensile tests and a finite-element analysis (FEA) were conducted, with and without internal pressure, using full-scale pipes with surface notches...

... singularity of the crack to a notch, reducing thus the driving force for further crack propagation. Most of the existing research works on this subject are focusing on cracks subjected to mode-I loading. However, the fatigue cracks on structural elements of offshore structures are subjected to mixed-mode...

... cumulative fatigue rule is insufficient to consider the effects of many uncertain factors, such as variable wave environmental loads. In this study, SN based and fatigue crack propagation (FCP) based fatigue assessments of a welded joint in a container ship which follows weather routing are performed. Short...

... structure model 1 flange surface crack growth stiffener crack propagation fatigue test displacement bulb flat fricke loading fatigue characteristic longitudinal freight & logistics services weld toe marine transportation Experimental Study on Fatigue Characteristics of Typical Welded...

... ABSTRACT Fatigue crack propagation behavior in bulb stiffeners, which are widely used in ship structures, is indispensable information for ship structures' fatigue life prediction. This paper aims to provide reasonable simulation process for the fatigue cracks propagated in bulb stiffeners...

.... Areas where further research could enhance our knowledge of crack arrest are listed. Introduction Crack arrest is considering running cracks that are halted due to increasing resistance to crack propagation and/or reduced crack driving force. The former may be due to microstructural barriers...

... Abstract The fracture failures of ship plates under high in-plane cyclic loading are generally the coupling result of low-cycle-fatigue (LCF) damage and accumulative plastic damage. Therefore, an analytical model for predicting the LCF crack propagation life of plates has been proposed taking...

... (Crack Tip Opening Angle), which is one of the fracture mechanics parameters for ductile crack propagation, was also measured with a high-speed camera. CTOA slightly decreased with decrease in test temperature. However, inverse fracture did not affect CTOA. Crack tip opening displacement at maximum load...

... tests revealed practicability of the model compared with existing ones. piping design crack velocity closure stress fe analysis equation piping simulation pipe displacement gas pipeline crack tip local strain calculation crack propagation ctoa upstream oil & gas criterion...

... british standard institution fatigue assessment crack growth stress intensity factor critical crack size stress range propagation crack size fracture mechanics crack propagation platform fatigue crack growth hydraulic fracturing sensitivity formula assessment jacket platform initial crack...

..., " press-notched bend esso test history arrest toughness specimen equation crack propagation test method crack tip arrest toughness evaluation tomoya kawabata temperature dependency japan welding engineering society press-notched bend test toughness steel fem analysis Numerical...

... controlling parameter in analyzing the crack propagation due to low-cycle fatigue damage. An analytical model is presented in this paper to determine the CTOD for central-through cracked plates subjected to cyclic axial in-plane loadings. Combined with Dugdale model, the plastic strain accumulation...

... Abstract A model for simulating brittle crack propagation and arrest in steel plates is presented. The model considers the influence of shear-lips formed on a fracture surface acting as crack closure force and that of a loss of plane strain condition at a propagating crack-tip with increasing...