Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Arne Fjeldstad"'
This paper results from a project initiated by the Petroleum Safety Authority of Norway to describe relevant repair methods for load bearing steel and concrete structures operating on the Norwegian continental shelf. The purpose of the work was to es
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1b251702088cb62733e863026da43590
https://doi.org/10.1115/1.885789_ch26
https://doi.org/10.1115/1.885789_ch26
Autor:
Kenneth A. Macdonald, Lorents Reinås, Gudfinnur Sigurdsson, Arne Fjeldstad, Torfinn Hørte, Anders Wormsen, Espen Berg
Publikováno v:
Volume 4: Pipelines, Risers, and Subsea Systems.
This article presents a fatigue life extension procedure for subsea wells based on fracture mechanics. It makes use of the outcome of an internal pressure test to determine a safe period for drilling and completion. The pressure test is used as a loa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6f229e2685b92cee021514ae0b3308b
https://doi.org/10.1115/omae2021-63003
https://doi.org/10.1115/omae2021-63003
Autor:
Anders Wormsen, Per Osen, Arne Fjeldstad, Anthony Muff, Finn Kirkemo, Torfinn Hørte, Kenneth A. Macdonald, Lorents Reinås
Publikováno v:
Volume 2: Structures, Safety, and Reliability.
Guidance for determining a S-N based fatigue capacity (safe life design) for preloaded connectors is included in Section 5.4 of the 2019 edition of DNVGL-RP-C203 (C203-2019). This section includes guidance on the finite element model representation,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::696172d97042c53c654387804680c261
https://doi.org/10.1115/omae2021-62880
https://doi.org/10.1115/omae2021-62880
Autor:
Finn Kirkemo, Kenneth A. Macdonald, Lorents Reinås, Anthony David Muff, Arne Fjeldstad, Anders Wormsen
Publikováno v:
International Journal of Fatigue. 96:43-66
Design S–N curves are presented for low alloy machined steel forgings. Separate S–N curves are given for air and for seawater with cathodic protection. The selection of the S–N curve is made based on the tensile strength and the surface roughne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6e5df5a3ddc66a94e6ef7ec7cdc474c
https://doi.org/10.1016/j.ijfatigue.2016.11.005
https://doi.org/10.1016/j.ijfatigue.2016.11.005
Autor:
Egil Gulbrandsen, Arne Fjeldstad, Kenneth A. Macdonald, Finn Kirkemo, Lorents Reinås, Anthony David Muff, Anders Wormsen
Publikováno v:
International Journal of Fatigue. 95:168-184
Fatigue test results of notched low alloy steel specimens tested in a fully aerated aqueous 3.5% NaCl solution with cathodic protection (CP) are presented. A CP potential of −1050 mV Ag/AgCl was used. This work extends the testing presented in Worm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c858b9649820c8f1540857e713ea6e1
https://doi.org/10.1016/j.ijfatigue.2016.10.016
https://doi.org/10.1016/j.ijfatigue.2016.10.016
Publikováno v:
Marine Structures. 46:167-192
Due to the nature of the fatigue phenomena it is well known that small changes in basic assumptions for fatigue analysis can have significant influence on the predicted crack growth lives. Calculated fatigue lives based on the S–N approach are sens
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::82a64554e882553eb65e8172fc79ff18
https://doi.org/10.1016/j.marstruc.2016.02.002
https://doi.org/10.1016/j.marstruc.2016.02.002
Autor:
Arne Fjeldstad, Anders Wormsen, Kenneth A. Macdonald, Anthony David Muff, Espen Berg, Marc Avice, Lorents Reinås
Publikováno v:
International Journal of Fatigue. 81:275-298
Specimens with typical subsea design features have been fatigue tested in order to quantify the fatigue life prediction accuracy of the local stress approach as prescribed by the recommended practice DNVGL-RP-0005 (former DNV-RP-C203). A second aim h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1779951bb7e1f004d26b6a833fb0c5a5
https://doi.org/10.1016/j.ijfatigue.2015.08.004
https://doi.org/10.1016/j.ijfatigue.2015.08.004
Autor:
Kenneth A. Macdonald, Lorents Reinås, Arne Fjeldstad, Marc Avice, Anders Wormsen, Anthony David Muff
Publikováno v:
International Journal of Fatigue. 80:477-495
This is the first of two papers presenting fatigue data for low alloy forged steels in a quenched and tempered condition. This paper considers the effect of the surface roughness, mean stress and material strength on the high cycle fatigue crack init
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::807098083ce13911ad392ce7cdbda060
https://doi.org/10.1016/j.ijfatigue.2015.07.007
https://doi.org/10.1016/j.ijfatigue.2015.07.007
Publikováno v:
Engineering Fracture Mechanics. 75:1083-1098
This paper presents an approximate method based on asymptotic solutions for estimating the stress intensity factor K for semi-elliptic surface cracks at stress concentrations. The proposed equations make use of a reference solution to interpolate ove
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::62869fccf60e9d557d91209c1e4f883c
https://doi.org/10.1016/j.engfracmech.2007.04.028
https://doi.org/10.1016/j.engfracmech.2007.04.028