The Welding Institute – TWI (https://www.theweldinginstitute.com/)
has announced a webinar and live Q&A on Computational Fluid Dynamics, 02
April 2019 | 15:00 BST (GMT+1).
TWI’s description appears below.
TIP: If you wonder whether you want to spend valuable time attending this webinar, consider looking up the presenters on Google® Scholar (https://scholar.google.com)
For example, the Google® Scholar search string "tyler london" yields, among other results …
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Flaw Tolerance of Pipelines Containing Circumferential Flaws Subjected to Axial Straining and Internal Pressure - Tests and Analyses
AuthorsHenryk Pisarski (TWI Ltd.) | Simon Smith (TWI Ltd.) | Tyler London (TWI Ltd.) Document IDISOPE-14-24-3-199
Publisher International Society of Offshore and Polar Engineers
Source International Journal of Offshore and Polar Engineering, Volume24, Issue03
Publication Date September 2014
A number of codified assessment procedures can be applied to assess the significance of circumferential flaws in pipes, but these are generally stress-based. Efforts have been made to extend these so that they are applicable when the pipe is subject to axial plastic straining with and without internal pressure. In this paper, the results are presented for two full–scale tests that were axially loaded beyond yield. The tests were conducted on the parent pipe to API 5L PSL 2 Grade X65, 273.3 mm OD_1804 mm WT, which contained circumferential surface notches. In the first test, the pipe was axially strained until failure, and in the second test, the pipe was first internally pressurised and then axially strained until a failure condition was reached. In both tests, failure was ductile. The full–scale tests were accompanied by small-scale tests, which included SENT tests to derive fracture toughness resistance curves. For the materials investigated, the SENT specimens with EDM notches produced resistance curves almost identical to those with fatigue precracks. The behaviour of the pipes in terms of CTOD versus applied strain was compared with finite element analyses and failure analysis diagram (FAD) methods described in BS 7910. It is shown that a modification of the material-specific FAD enables it to be extended up to 3% strain.
source: https://www.onepetro.org/journal-paper/ISOPE-14-24-3-199
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Investigations into the Fatigue Strength of CRA Lined Pipe
Authors
Carol Johnston (Twi Ltd) | Channa Nageswaran (Twi Ltd) | Tyler London (Twi Ltd) DOIhttps://doi.org/10.4043/27141-MS
Document IDOTC-27141-MS
Publisher Offshore Technology Conference
Source Offshore Technology Conference, 2-5 May, Houston, Texas, USA
Publication Date2016
Pipes that experience sour service need to resist that corrosive environment. One method for achieving corrosion resistance is by lining the inside of the pipe with a corrosion resistant alloy (CRA), such as stainless steel or a nickel based alloy. This has the advantage of being much cheaper than either making the pipe from the CRA or metallurgically bonding CRA to the pipe (ie clad pipe). Lined pipe is gaining popularity, and has so far been used successfully in applications where applied strain levels are low, however more data is needed on its fatigue strength and its behavior when subjected to high levels of applied strain. A Joint Industry Project (JIP), funded by Petrobras, BG Group, Saipem, Tenaris, Technip, Cladtek and HMC, was run by TWI Ltd and INTECSEA to investigate and generate data on CRA lined pipe.
The JIP included full scale resonance fatigue testing, allowing the failure location of lined pipes to be investigated, development of an ultrasonic inspection procedure for lined pipe, small scale mechanical tests to generate materials data and calculation of stress intensity factors specific to the lined pipe geometry. This paper presents a summary of the work carried out.
The significance of the paper is that it describes a body of work carried out in the field of CRA lined pipe, helping operators and those at the front-end engineering design (FEED) stage to choose lined pipe, with the resulting cost savings.
source: https://www.onepetro.org/conference-paper/OTC-27141-MS
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Here is the text of the TWI communication …
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The Welding Institute is the leading international membership body for welding and joining professionals.
Becki Parratt - TWI Ltd < TWI@cmp.dotmailer.co.uk >
Computational Fluid Dynamics (CFD) is increasingly being used in the aerospace, automotive, marine, nuclear, oil & gas and medical device sectors to solve engineering, design, and structural integrity challenges.
To support our Industrial Members in these areas, TWI provides CFD services for consultancy and R&D activities.
Over the years, CFD capabilities have improved to the point where complex industrial processes, such as additive manufacturing (AM), cold/thermal spray, and welding/joining can be accurately reproduced providing improved insights into their physics. Phenomena such as Departure from Nucleate Boiling (DNB) can be predicted to assure integrity, while thermal-hydraulic performance of AM heat exchangers can be evaluated for further efficiency optimisation.
Presented by Tyler London and Alessio Basso from TWI's Numerical Modelling and Optimisation section this webinar will provide an overview of CFD activities at TWI.
///////
TWI’s description appears below.
TIP: If you wonder whether you want to spend valuable time attending this webinar, consider looking up the presenters on Google® Scholar (https://scholar.google.com)
For example, the Google® Scholar search string "tyler london" yields, among other results …
///////
Flaw Tolerance of Pipelines Containing Circumferential Flaws Subjected to Axial Straining and Internal Pressure - Tests and Analyses
AuthorsHenryk Pisarski (TWI Ltd.) | Simon Smith (TWI Ltd.) | Tyler London (TWI Ltd.) Document IDISOPE-14-24-3-199
Publisher International Society of Offshore and Polar Engineers
Source International Journal of Offshore and Polar Engineering, Volume24, Issue03
Publication Date September 2014
A number of codified assessment procedures can be applied to assess the significance of circumferential flaws in pipes, but these are generally stress-based. Efforts have been made to extend these so that they are applicable when the pipe is subject to axial plastic straining with and without internal pressure. In this paper, the results are presented for two full–scale tests that were axially loaded beyond yield. The tests were conducted on the parent pipe to API 5L PSL 2 Grade X65, 273.3 mm OD_1804 mm WT, which contained circumferential surface notches. In the first test, the pipe was axially strained until failure, and in the second test, the pipe was first internally pressurised and then axially strained until a failure condition was reached. In both tests, failure was ductile. The full–scale tests were accompanied by small-scale tests, which included SENT tests to derive fracture toughness resistance curves. For the materials investigated, the SENT specimens with EDM notches produced resistance curves almost identical to those with fatigue precracks. The behaviour of the pipes in terms of CTOD versus applied strain was compared with finite element analyses and failure analysis diagram (FAD) methods described in BS 7910. It is shown that a modification of the material-specific FAD enables it to be extended up to 3% strain.
source: https://www.onepetro.org/journal-paper/ISOPE-14-24-3-199
///////
Investigations into the Fatigue Strength of CRA Lined Pipe
Authors
Carol Johnston (Twi Ltd) | Channa Nageswaran (Twi Ltd) | Tyler London (Twi Ltd) DOIhttps://doi.org/10.4043/27141-MS
Document IDOTC-27141-MS
Publisher Offshore Technology Conference
Source Offshore Technology Conference, 2-5 May, Houston, Texas, USA
Publication Date2016
Pipes that experience sour service need to resist that corrosive environment. One method for achieving corrosion resistance is by lining the inside of the pipe with a corrosion resistant alloy (CRA), such as stainless steel or a nickel based alloy. This has the advantage of being much cheaper than either making the pipe from the CRA or metallurgically bonding CRA to the pipe (ie clad pipe). Lined pipe is gaining popularity, and has so far been used successfully in applications where applied strain levels are low, however more data is needed on its fatigue strength and its behavior when subjected to high levels of applied strain. A Joint Industry Project (JIP), funded by Petrobras, BG Group, Saipem, Tenaris, Technip, Cladtek and HMC, was run by TWI Ltd and INTECSEA to investigate and generate data on CRA lined pipe.
The JIP included full scale resonance fatigue testing, allowing the failure location of lined pipes to be investigated, development of an ultrasonic inspection procedure for lined pipe, small scale mechanical tests to generate materials data and calculation of stress intensity factors specific to the lined pipe geometry. This paper presents a summary of the work carried out.
The significance of the paper is that it describes a body of work carried out in the field of CRA lined pipe, helping operators and those at the front-end engineering design (FEED) stage to choose lined pipe, with the resulting cost savings.
source: https://www.onepetro.org/conference-paper/OTC-27141-MS
///////
Here is the text of the TWI communication …
///////
The Welding Institute is the leading international membership body for welding and joining professionals.
Becki Parratt - TWI Ltd < TWI@cmp.dotmailer.co.uk >
Computational Fluid Dynamics (CFD) is increasingly being used in the aerospace, automotive, marine, nuclear, oil & gas and medical device sectors to solve engineering, design, and structural integrity challenges.
To support our Industrial Members in these areas, TWI provides CFD services for consultancy and R&D activities.
Over the years, CFD capabilities have improved to the point where complex industrial processes, such as additive manufacturing (AM), cold/thermal spray, and welding/joining can be accurately reproduced providing improved insights into their physics. Phenomena such as Departure from Nucleate Boiling (DNB) can be predicted to assure integrity, while thermal-hydraulic performance of AM heat exchangers can be evaluated for further efficiency optimisation.
Presented by Tyler London and Alessio Basso from TWI's Numerical Modelling and Optimisation section this webinar will provide an overview of CFD activities at TWI.
///////
