Abstract
The assessment of fatigue cracks in offshore structures involves stress analysis, fatigue fracture mechanics analysis and knowledge of the likely loading on the damaged member. Before embarking on the analysis it is necessary to assess the input information on the presence, location and size of any defect. This requires detailed information on the reliability of the non-destructive testing technique used for the inspection. Inspection reliability data is also extremely important for inspection scheduling especially in situations where reliability based inspection scheduling is to be used. To produce this type of data is expensive and time consuming as it involves blind trials, and a large sample containing realistic defects. The ICON project, a major EU Industry funded project, addressed this problem and conducted inspection reliability trials for the offshore industry. ICON and the subsequent ICON User Group produced a large database on fatigue crack detection and sizing techniques. This data is now available in the ICON User group Software. The paper has used this software to produce POD data for ACFM and MPI. The POD data has been assessed in terms of crack categories (including categorisation based on BS7910), the influence of spurious indications, and in terms of the influence it has on fatigue crack growth predictions.
| Language | English |
|---|---|
| Title of host publication | Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE |
| Editors | M. Salama, R.C. Ertekin, D.T. Valentine, W.L. Kuehnlein |
| Pages | 295-299 |
| Number of pages | 5 |
| Volume | 3 |
| DOIs | |
| Publication status | Published - 17 Dec 2003 |
| Event | 22nd International Conference on Offshore Mechanics and Arctic Engineering; Materials Technology Ocean Engineering Polar and Arctic Sciences and Technology Workshops - Cancun, Mexico Duration: 8 Jun 2001 → 13 Jun 2001 |
Conference
| Conference | 22nd International Conference on Offshore Mechanics and Arctic Engineering; Materials Technology Ocean Engineering Polar and Arctic Sciences and Technology Workshops |
|---|---|
| Country | Mexico |
| City | Cancun |
| Period | 8/06/01 → 13/06/01 |
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Keywords
- inspection
- offshore structures
- reliability
- fatigue cracks
- stress analysis
Cite this
}
Inspection reliability for offshore structures. / Dover, W. D.; Brennan, F. P.; Karé, R. F.; Staceyl, A.
Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE. ed. / M. Salama; R.C. Ertekin; D.T. Valentine; W.L. Kuehnlein. Vol. 3 2003. p. 295-299 OMAE2003-37404.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book
TY - GEN
T1 - Inspection reliability for offshore structures
AU - Dover, W. D.
AU - Brennan, F. P.
AU - Karé, R. F.
AU - Staceyl, A.
PY - 2003/12/17
Y1 - 2003/12/17
N2 - The assessment of fatigue cracks in offshore structures involves stress analysis, fatigue fracture mechanics analysis and knowledge of the likely loading on the damaged member. Before embarking on the analysis it is necessary to assess the input information on the presence, location and size of any defect. This requires detailed information on the reliability of the non-destructive testing technique used for the inspection. Inspection reliability data is also extremely important for inspection scheduling especially in situations where reliability based inspection scheduling is to be used. To produce this type of data is expensive and time consuming as it involves blind trials, and a large sample containing realistic defects. The ICON project, a major EU Industry funded project, addressed this problem and conducted inspection reliability trials for the offshore industry. ICON and the subsequent ICON User Group produced a large database on fatigue crack detection and sizing techniques. This data is now available in the ICON User group Software. The paper has used this software to produce POD data for ACFM and MPI. The POD data has been assessed in terms of crack categories (including categorisation based on BS7910), the influence of spurious indications, and in terms of the influence it has on fatigue crack growth predictions.
AB - The assessment of fatigue cracks in offshore structures involves stress analysis, fatigue fracture mechanics analysis and knowledge of the likely loading on the damaged member. Before embarking on the analysis it is necessary to assess the input information on the presence, location and size of any defect. This requires detailed information on the reliability of the non-destructive testing technique used for the inspection. Inspection reliability data is also extremely important for inspection scheduling especially in situations where reliability based inspection scheduling is to be used. To produce this type of data is expensive and time consuming as it involves blind trials, and a large sample containing realistic defects. The ICON project, a major EU Industry funded project, addressed this problem and conducted inspection reliability trials for the offshore industry. ICON and the subsequent ICON User Group produced a large database on fatigue crack detection and sizing techniques. This data is now available in the ICON User group Software. The paper has used this software to produce POD data for ACFM and MPI. The POD data has been assessed in terms of crack categories (including categorisation based on BS7910), the influence of spurious indications, and in terms of the influence it has on fatigue crack growth predictions.
KW - inspection
KW - offshore structures
KW - reliability
KW - fatigue cracks
KW - stress analysis
UR - http://www.scopus.com/inward/record.url?scp=0344308389&partnerID=8YFLogxK
U2 - 10.1115/OMAE2003-37404
DO - 10.1115/OMAE2003-37404
M3 - Conference contribution book
SN - 0791836835
VL - 3
SP - 295
EP - 299
BT - Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE
A2 - Salama, M.
A2 - Ertekin, R.C.
A2 - Valentine, D.T.
A2 - Kuehnlein, W.L.
ER -