RESEARCH PAPERS: Offshore Mechanics/Ocean Engineering

Underwater Tests on Corroded Steel Piles With the Thickness Measurement by Beam Alignment System

[+] Author and Article Information
A. Singh, R. McClintock

Department of NDE Research, Quality Assurance System and Engineering Division, Southwest Research Institute, San Antonio, Tex. 78284

J. Energy Resour. Technol 106(2), 257-259 (Jun 01, 1984) (3 pages) doi:10.1115/1.3231048 History: Received July 29, 1983; Revised October 21, 1983; Online October 22, 2009


An ultrasonic thickness measurement by beam alignment (TMBA) system developed by Southwest Research Institute was tested on underwater corroded steel piles at the Port Hueneme Harbor near Los Angeles, California. This ultrasonic system measures the thickness of steel piles by alignment of a focused ultrasonic transducer over a pit formed on the pile by corrosion. Tests conducted at the harbor demonstrated the ability of the system to measure the thickness of corrosion-pitted piles underwater at depths ranging from 0.3 m to 2.2 m (1 to 7 ft) below the water level. The tests also demonstrated that the system was successful in measuring the thickness of rough piles—that is, those with less corrosion—as well as pitted piles. Thus, the TMBA system is feasible as an overall approach to thickness measurement.

Copyright © 1984 by ASME
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