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Keywords: Fatigue
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Proceedings Papers

Proc. ASME. IPC2020, Volume 1: Pipeline and Facilities Integrity, V001T03A003, September 28–30, 2020
Paper No: IPC2020-9268
... with rationale for each term is proposed for the pipeline segments examined in the study, and recommendations made for potential implementation for other operators, along with follow-on research. fatigue pipeline crack inspection interval NEAR NEUTRAL PH STRESS CORROSION CRACK GROWTH MODEL...
Proceedings Papers

Proc. ASME. IPC2020, Volume 1: Pipeline and Facilities Integrity, V001T03A029, September 28–30, 2020
Paper No: IPC2020-9655
...PIPELINE PLAIN DENT FATIGUE ASSESSMENT: SHEDDING LIGHT ON THE API 579 LEVEL 2 FATIGUE ASSESSMENT METHODOLOGY Zeynab Shirband1, Adrian Gosselin, Stuart Guest, Lee Falcon Stantec Consulting Ltd. Calgary, AB ABSTRACT For continued safe operation of pipelines, thousands of integrity digs are conducted...
Proceedings Papers

Proc. ASME. IPC2020, Volume 1: Pipeline and Facilities Integrity, V001T03A022, September 28–30, 2020
Paper No: IPC2020-9511
... in similar crack growth rates for those waveforms containing low R-ratio cycles. These results imply that stage I of crack growth is assisted by fatigue due to low R-ratio cycles. It was observed that loading/unloading frequency of low R-ratio cycles has a direct relation with crack growth rate at stage I...
Proceedings Papers

Proc. ASME. IPC2020, Volume 1: Pipeline and Facilities Integrity, V001T03A032, September 28–30, 2020
Paper No: IPC2020-9703
... a result of a fatigue crack failure that occurred within shallow dents [1]. The dents in both instances were less than 6% (of the OD). Currently, there is no consensus on how shallow dents or shallow dents with stress concentrators, as called by the ILI tool, are assessed and acted upon. BMT Canada Ltd...
Proceedings Papers

Proc. ASME. IPC2020, Volume 1: Pipeline and Facilities Integrity, V001T03A036, September 28–30, 2020
Paper No: IPC2020-9781
... to quantify crack growth levels. Once a systematic process for growing cracks from EDM starter notches had been validated, testing involved cyclic pressure fatigue to failure and burst testing. The advantage with the crack generation methodology used in this study was the ability to generate sharp, crack-like...
Proceedings Papers

Proc. ASME. IPC2020, Volume 1: Pipeline and Facilities Integrity, V001T03A079, September 28–30, 2020
Paper No: IPC2020-9652
... of dented pipes according to the API 579-1 is presented using FE analysis results. dent ILI data FE analysis fatigue remaining life NUMERICAL ASSESSMENT OF DENTED PIPE USING INLINE INSPECTION DATA Parththeeban Murugathasan1, Ashutosh Sutra Dhar1 1Memorial University of Newfoundland, St. John s...
Proceedings Papers

Proc. ASME. IPC2020, Volume 3: Operations, Monitoring, and Maintenance; Materials and Joining, V003T05A018, September 28–30, 2020
Paper No: IPC2020-9404
...Abstract Abstract Structural steel mechanical properties of strength and ductility for a given microstructure are predominately driven by the average ferrite grain/packet size and by the through-thickness homogeneity of the ferrite grain/packet size in the final product. Fatigue performance...
Proceedings Papers

Proc. ASME. IPC2020, Volume 3: Operations, Monitoring, and Maintenance; Materials and Joining, V003T05A013, September 28–30, 2020
Paper No: IPC2020-9290
.... The objective was to demonstrate restoration of the fatigue life of the pipe to acceptable levels rather than just considering burst pressure. Defects equal to 0.5 times the diameter axially and 0.25 times the diameter radially were machined into the intrados of the bend (the location of highest hoop stress...
Proceedings Papers

Proc. ASME. IPC2020, Volume 3: Operations, Monitoring, and Maintenance; Materials and Joining, V003T05A001, September 28–30, 2020
Paper No: IPC2020-9248
... are shown for comparison and utility. Fully established negligible growth thresholds pave the way toward adoption of next-level fracture mechanics best practice models and tools such as AFGROW and NASGRO, and facilitates crack growth simulations and root-cause analysis. fatigue pipeline crack...
Proceedings Papers

Proc. ASME. IPC2004, 2004 International Pipeline Conference, Volumes 1, 2, and 3, 1219-1228, October 4–8, 2004
Paper No: IPC2004-0254
... forward for the further development and implementation of this approach. 10 12 2008 Wrinkle Buckle Fatigue Proceedings of IPC 2004 International Pipeline Conference October 4-8, 2004 Calgary, Alberta, Canada IPC04-0254 DEVELOPMENT AND VALIDATION OF A PIPELINE BUCKLE AND WRINKLE...
Proceedings Papers

Proc. ASME. IPC2004, 2004 International Pipeline Conference, Volumes 1, 2, and 3, 1239-1245, October 4–8, 2004
Paper No: IPC2004-0437
..., fatigue analysis, validation through dig programs, and the management of these features from a system integrity standpoint. 10 12 2008 fatigue dent management engineering assessment Copyright © 2004 by ASME Proceedings of IPC 2004 International Pipeline Conference October 4 - 8, 2004...
Proceedings Papers

Proc. ASME. IPC2006, Volume 2: Integrity Management; Poster Session; Student Paper Competition, 297-309, September 25–29, 2006
Paper No: IPC2006-10177
... 07 10 2008 Fatigue life assessment procedures require knowledge of the fatigue crack driving force, such as stress intensity factor range (Δ K ) and cyclic J -integral (Δ J ), for the flaw geometry detected during inspection. Because three-dimensional closed-form crack driving force...