Technology
Assessment & Research (TA&R) Program
| Project
Number |
33 |
| Date of Summary |
March 31, 1984 |
| Subject |
Vibration Monitoring of Offshore
Structures |
| Performing Activity |
The Aerospace Corporation |
| Principal Investigator |
Dr. Sheldon Rubin |
| Contracting Agency |
Minerals Management Service |
| Estimated Completion |
Complete |
| Description |
This was a joint Industry Project
(JIP). Frequency monitoring was applied to the Nondestructive Examination Method `Round
Robin` (see Project No. 34). This program evaluated
the applicability of several promising methods for locating structural failures. Projects
Nos. 23 and 41
were also evaluated. Experiments were run on a 14 foot, four-legged jacket platform model
at the NASA facility at Goddard. A new concept was developed called the Flexibility
Monitoring Technique (FMT). The concept circumvents measuring harmonic frequencies
necessary in conventional monitoring techniques. The new method takes advantage of the
basic shear beam behavior of a fixed offshore platform. It has been evaluated on the
`Round Robin` model, and several experiments will be conducted fixed platforms in the
field. |
| Progress |
Complete |
| Reports |
| AA |
Rubin, S., Ambient Vibration
Survey of Offshore Platforms, Engineering Division, ASCE, Volume 106, No. EM3, Proceedings
Paper No. 15458, pp. 425-441, June 1980. (Out of print) |
| AB |
Coppolino, R. N., Rubin, S.,
Detectability of Structural Failures in Offshore Platforms by Ambient Vibration
Monitoring, Proceedings of the 1980 Offshore Technology Conference, Volume IV, Paper No.
3,865, pp. 101-110, Houston, Texas, May 1980. (Out of print) |
AC (125 pages)
 |
Rubin, S., Coppolino, R. N.,
Scale Model Nondestructive Examination (NDE) Round Robin Test, Frequency Response Method,
Report No. ATR-82(2830)-IND, The Aerospace Corporation, December 1981. |
| AD (8 pages)
|
Rubin, S., Coppolino, R. N.,
Flexibility Monitoring of Offshore Jacket Platforms, Proceedings of the 1983 Offshore
Technology Conference, Volume II, Paper No. 4,535, pp. 201-208, Houston, Texas, May 1983. |
| AE (158 pages)
|
Rubin, S., Coppolino, R. N.,
Flexibility Monitoring Evaluation Study, Report No. ATR-83 (3839)-2nd, The Aerospace
Corporation, September 1983. |
| AF (189 pages)
|
Rubin, S., Coppolino, R. N., OCS
Instrumentation Monitoring Evaluation, The Aerospace Corporation, El Segundo, California,
June 1979. |
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