Ultrasonic guided waves have been widely utilized in the testing of large structures due to such characteristics as high penetration power and long propagation distances. In this paper, development and application of guided wave techniques for damage testing in a ship hull is presented. Selecting proper modes and frequency ranges is based on the wave structures. Lamb and shear horizontal waves are generated in model steel plates and an actual ship hull with simulated damage. An approximate image of damage, utilizing a discontinuity locus map, is constructed using the reflected guided waves from the damage. A discontinuity locus map provides information on location and size of damage. Experimental results with lamb and shear horizontal waves are demonstrated and compared. The potential of the discontinuity locus map technique for detecting and quantifying damage in a ship hull is discussed.
|Number of pages
|Published - Jan 2003
All Science Journal Classification (ASJC) codes
- Materials Science (miscellaneous)