Project Number | 41 |
Date of Summary | March 31, 1985 |
Subject | Ultrasonic Inspection of Underwater Structural Joints |
Performing Activity | Drexel University |
Principal Investigator | Dr. Joseph L. Rose |
Contracting Agency | Office of Naval Research |
Estimated Completion | Complete |
Description | The objective was to show that a microprocessor, when used with a ultrasonic flaw detector, can reliably regulate an ultrasonic inspection process. The project is divided into two parts; the microprocessor systems development for ultrasonic testing and analysis and joint inspection concepts for offshore structures. |
Progress | Complete. A portable microprocessor oriented data acquisition system was used to demonstrate the benefit of microprocessors and ultrasonics in a field environment. A fatigue test was carried out at the National Aeronautics and Space Administration (NASA), Goddard Space Flight Center, on a 1/3 scale model K-joint (Project No. 34). The inspection technique was used to study damage detection. Additional fatigue tests were conducted on the K-joint in a joint project with NASA and the Federal Highway Administration (FHWA). NASA used the `Random Decrement` method and the FHWA used the acoustic emissions technique. Information received from this latest testing program was analyzed and a final report prepared. |
Reports | |
AC (116 pages) | Fuller, M. C., Nestleroth, J. B., Rose, J. L., A Proposed Ultrasonic Inspection Technique for Offshore Structures, Materials Evaluation, Journal of the American Society for Nondestructive Testing, Volume 41, No. 5, April 1983. |
AD (7 pages) | Fuller, M. C., Jeong, Y. H., Nestleroth, J. B., Rose, J. L., An Ultrasonic Global Inspection Technique for an Offshore K-Joint, Ultrasonics Research Laboratory, Drexel University, Philadelphia, Pennsylvania, Journal of the Society of Petroleum Engineering, AIME, April 1983. |
AE (11 pages) | Rose, J. L., Elements of a Feature-Based Ultrasonic Inspection System, Materials Evaluation, ASNDT, Volume 42, No. 2, pp. 210- 218. August, 1982. |
AF (4 pages) | Material Evaluations, Drexel University, Philadelphia, Pennsylvania, Volume 41, No. 11, pp. 1228-1229. |
AG (6 pages) | Nestleroth, J. B., Rose, J. L., Bashyam, M., Subramanian, K., Physically Based Ultrasonic Feature Mapping for Anomaly Classification in Composite Materials, Materials Evaluation, ASNDT, No. 43, April, 1985. |
AH (30 pages) | Rose, J. L., Jeong, Y. H., Avioil, M. J., An Ultrasonic Global Inspection Technique for an Offshore K-Joint, Ultrasonics Research Laboratory, Drexel University, Philadelphia, Pennsylvania, Submitted to the Society of Petroleum Engineering, May 1, 1981. |
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