Application of Non-Contact Hybrid Acoustical Techniques for Remote Inspection of Naval Structures
Final rept. 30 Nov 2000-30 Dec 2002
JOHNS HOPKINS UNIV BALTIMORE MD G W C WHITING SCHOOL OF ENGINEERING
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The Johns Hopkins University Center for Nondestructive Evaluation CNDE has pioneered the development of non-contact remote ultrasonic technology. In this project, we have developed, optimized, and applied non-contact ultrasonic methods of non-intrusive, remote inspection of advanced materials and assessed the feasibility of this technology for implementation on Naval structures. Ultrasonic testing of material properties is a demonstrated technology and has proven to be a robust industrial tool. The major difficulty in ultrasonic testing is the conventional need to use contact transducers with the associated mechanical coupling materials. We have further demonstrated non-contact methodology for the materials characterization that should enable in situ and on platform assessment of structural degradation due to fatigue or corrosion for metals and composites. Implementation of these measurements would result in considerable risk reduction and cost savings to the Navy while permitting rapid inspection of large areas of Naval structures, including those made of metal, ceramics, polymers, composites and hybrid combinations of materials.
- Test Facilities, Equipment and Methods
- Acoustic Detection and Detectors
- Marine Engineering