Scale effects influence on the fatigue crack growth of an offshore steel
Offshore tubular members are manufactured in a very wide thicknesses and diameters. The design curves considered for the fatigue design of such structures are assessed based on testing small scale laboratory specimens. A correction factor is applied to account for differences in thickness and weld g...
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ftunivgent:oai:archive.ugent.be:8683978 2023-06-11T04:07:31+02:00 Scale effects influence on the fatigue crack growth of an offshore steel Micone, Nahuel De Waele, Wim 2017 application/pdf https://biblio.ugent.be/publication/8683978 http://hdl.handle.net/1854/LU-8683978 https://doi.org/10.1115/omae2017-61818 https://biblio.ugent.be/publication/8683978/file/8683979 eng eng ASME https://biblio.ugent.be/publication/8683978 http://hdl.handle.net/1854/LU-8683978 http://dx.doi.org/10.1115/omae2017-61818 https://biblio.ugent.be/publication/8683978/file/8683979 No license (in copyright) info:eu-repo/semantics/restrictedAccess PROCEEDINGS OF THE ASME 36TH INTERNATIONAL CONFERENCE ON OCEAN, OFFSHORE AND ARCTIC ENGINEERING, 2017, VOL 4 ISBN: 9780791857687 Technology and Engineering conference info:eu-repo/semantics/conferenceObject info:eu-repo/semantics/publishedVersion 2017 ftunivgent https://doi.org/10.1115/omae2017-61818 2023-05-10T22:47:56Z Offshore tubular members are manufactured in a very wide thicknesses and diameters. The design curves considered for the fatigue design of such structures are assessed based on testing small scale laboratory specimens. A correction factor is applied to account for differences in thickness and weld geometry. However crack growth behaviour in tubular elements is complex and it is not totally clear if this can accurately be represented by testing small-scale coupons. Large scale fatigue tests aim to characterize the fatigue behaviour in a more realistic manner. However conducting such tests is very expensive. Hence, a medium scale strip type specimen with dimensions between small scale standardized specimens and a full pipe is designed. It has the same curvature and thickness as the pipe from which it is extracted and a quasi semi-elliptical notch is introduced. It is hypothesized that can account for most of the scale effects. Furthermore it can be tested in conventional test rigs at rather high frequencies. With the objective of quantifying the scale effects between standardized ESE(T) specimens and medium size coupons, a series of crack growth based tests on a high strength offshore steel are carried out. By comparing the corresponding da/dn-AK curves it will be possible to evaluate possible scale effects. Conference Object Arctic Ghent University Academic Bibliography Volume 4: Materials Technology |
institution |
Open Polar |
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Ghent University Academic Bibliography |
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ftunivgent |
language |
English |
topic |
Technology and Engineering |
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Technology and Engineering Micone, Nahuel De Waele, Wim Scale effects influence on the fatigue crack growth of an offshore steel |
topic_facet |
Technology and Engineering |
description |
Offshore tubular members are manufactured in a very wide thicknesses and diameters. The design curves considered for the fatigue design of such structures are assessed based on testing small scale laboratory specimens. A correction factor is applied to account for differences in thickness and weld geometry. However crack growth behaviour in tubular elements is complex and it is not totally clear if this can accurately be represented by testing small-scale coupons. Large scale fatigue tests aim to characterize the fatigue behaviour in a more realistic manner. However conducting such tests is very expensive. Hence, a medium scale strip type specimen with dimensions between small scale standardized specimens and a full pipe is designed. It has the same curvature and thickness as the pipe from which it is extracted and a quasi semi-elliptical notch is introduced. It is hypothesized that can account for most of the scale effects. Furthermore it can be tested in conventional test rigs at rather high frequencies. With the objective of quantifying the scale effects between standardized ESE(T) specimens and medium size coupons, a series of crack growth based tests on a high strength offshore steel are carried out. By comparing the corresponding da/dn-AK curves it will be possible to evaluate possible scale effects. |
format |
Conference Object |
author |
Micone, Nahuel De Waele, Wim |
author_facet |
Micone, Nahuel De Waele, Wim |
author_sort |
Micone, Nahuel |
title |
Scale effects influence on the fatigue crack growth of an offshore steel |
title_short |
Scale effects influence on the fatigue crack growth of an offshore steel |
title_full |
Scale effects influence on the fatigue crack growth of an offshore steel |
title_fullStr |
Scale effects influence on the fatigue crack growth of an offshore steel |
title_full_unstemmed |
Scale effects influence on the fatigue crack growth of an offshore steel |
title_sort |
scale effects influence on the fatigue crack growth of an offshore steel |
publisher |
ASME |
publishDate |
2017 |
url |
https://biblio.ugent.be/publication/8683978 http://hdl.handle.net/1854/LU-8683978 https://doi.org/10.1115/omae2017-61818 https://biblio.ugent.be/publication/8683978/file/8683979 |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
PROCEEDINGS OF THE ASME 36TH INTERNATIONAL CONFERENCE ON OCEAN, OFFSHORE AND ARCTIC ENGINEERING, 2017, VOL 4 ISBN: 9780791857687 |
op_relation |
https://biblio.ugent.be/publication/8683978 http://hdl.handle.net/1854/LU-8683978 http://dx.doi.org/10.1115/omae2017-61818 https://biblio.ugent.be/publication/8683978/file/8683979 |
op_rights |
No license (in copyright) info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1115/omae2017-61818 |
container_title |
Volume 4: Materials Technology |
_version_ |
1768380672663093248 |