| Author | Kitinum Pongsapasiritut |
| Call Number | AIT Thesis no.OTM-11-07 |
| Subject(s) | Steel--Fatigue
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Offshore Technology and Management, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. OTM-11-07 |
| Abstract | 95% of offshore platforms all around the world including the Gulf of Thailand (GOT)
are steel template jacket module due to the robustness and lower time of fabrication. Their
characteristics such as exposing to cyclic environmental load and large localized stresses at
joint intersections result in risk from fatigue failure mode. The objective of this research is to
compare the fatigue strength in tubular joint cans of steel jacket platform according to updated
provisions on API RP2A WSD 21st supplement 2 (2005). Three representative jackets on water
depth as 191, 215 and 240 feet were modeled as space frame using SACS package program.
Meanwhile, spectral fatigue analysis was performed through varied parameters consisting of
joint thickness and diameter ratio, S-N curves and stress concentration factor formulas. The
results are presented as relation of fatigue life ratio and joint geometries for T & Y, TK and K
type. These relations are interpreted as the endurance limit significantly affects joint fatigue life.
Furthermore, fatigue life can be exponentially increased or decreased by tubular joint
geometries. |
| Year | 2011 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. OTM-11-07 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Offshore Technology and Management (OTM) |
| Chairperson(s) | Chiu, Gregory L.F.;Widjaja, Joko Harsono |
| Examination Committee(s) | Pennung Warnitchai |
| Scholarship Donor(s) | Royal Thai Government Fellowship |
| Degree | Thesis (M. Eng) - Asian Institute of Technology, 2011 |