Backscattering and Diffraction from Bare and Lined Wedges - Theory and Experiments.
PENNSYLVANIA STATE UNIV UNIVERSITY PARK APPLIED RESEARCH LAB
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This report documents an experimental program to determine the ability of existing theoretical formulations to predict the acoustic diffraction field from submerged wedges. Both backscatter and diffraction measurements were conducted on two wedges measuring 75 and 90 degrees. Tests were conducted on the bare steel wedges and on the wedges lined with a pressure release rubber. The experimental results were compared to the fiber order approximation of the diffraction field from rigid and pressure release wedges. The experimental values for the bare steel and rubber lined wedges agree to within experimental error. This combined value agrees more closely with the pressure release wedge theory than with the rigid wedge theory.
- Metallurgy and Metallography
- Test Facilities, Equipment and Methods