Primer and paint layers over steel ship structures have a distinct microwave signature, and when a corrosion layer is present this overall signature changes. Microwave sensors can detect these changes due to corrosion under paint (CUP), and are investigated here as a diagnostic tool for condition based maintenance assessment of the need to repaint. The goal is a tool for assessing hull, superstructure, and other shipboard painted surfaces for underlying corrosion. This feasibility study demonstrated high signal to noise ratio detection of CUP for typical shipboard paint systems. Pre-prototype microwave CUP NDE tools developed require no expert NDE training, detect corrosion reliably, and can be battery operated. Detectors sizes are roughly equal to a two cell flashlight. Corrosion indications are immediate, and shipboard inspection rates are as fast as the sensor can be moved by hand. Future plans include shipboard tests and trial operation by ship's crew.
Microwave NDE methods for detecting corrosion under shipboard paint
Mikrowellen-NDE-Methoden zur Korrosionserkennung unter Schiffsanstrichen
1998
5 Seiten, 7 Bilder, 1 Tabelle, 4 Quellen
Conference paper
English
Microwave NDE Methods for Detecting Corrosion Under Shipboard Paint
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