Accession Number:

AD1044127

Title:

Effects of Target Corrosion/Bio-Fouling on EMI and Structural Acoustic Signatures in Underwater Environments - Acoustic Component

Descriptive Note:

Technical Report,01 Jun 2017,26 Jun 2017

Corporate Author:

Naval Research Laboratory Washington United States

Personal Author(s):

• Bucaro,J. A.
• Sarkissian,A.
• Houston,B. H.
• Saniga,M.

Report Date:

2017-06-01

Pagination or Media Count:

42.0

Abstract:

This reports on the results of an experimental study focused on generating a carefully controlled data base determining the effects of corrosion and bio-fouling on a UXOs underwater echo characteristics, i.e. on acoustic color from which classification features and images are generated. The detailed frequencyangle structure in the measured acoustic color map provides effective fingerprinting features for the classification algorithm. Here we measure these color maps for two UXO - a 5 rocket and a 155mm shell both filled with an epoxy resin - and then repeat the measurements after the targets have experienced bio-fouling and then corrosion. Further, we attempt to determine how the various structural acoustic mechanisms which lead to these features are affected by the bio-fouling or corrosion.

Descriptors:

• UNEXPLODED AMMUNITION
• BIOFOULING
• detection
• corrosion
• ACOUSTIC SIGNATURES

Subject Categories:

• Acoustic Detection and Detectors
• Ammunition and Explosives

Distribution Statement:

APPROVED FOR PUBLIC RELEASE