Technology
Assessment & Research (TA&R) Program
| 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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