STP908

    Advanced Ultrasonic Examination Methods for Corrosion Detection and Assessment in Industrial Components

    Published: Jan 1986


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    Abstract

    Ultrasonic examination techniques and equipment have been improved in recent years and have become indispensable in many industrial applications where undetected corrosion can result in unscheduled downtime. Likewise, microprocessor technology has advanced in versatility and cost efficiency so that many practical applications have become possible. The resulting combination of improved examination hardware and microprocessor-based data acquisition and analysis devices has revolutionized nondestructive examination as applied to the detection and assessment of corrosion. This paper presents information concerning three recently developed ultrasonic systems which have been proven effective in the detection of thinning, pitting, and methane-type hydrogen damage. Each of these systems utilizes manual placement of the ultrasonic search unit, as opposed to totally automated systems which rely on complicated electromechanical systems for movement and position readout. As a result, greater versatility, reliability, and speed are achieved with no loss in accuracy.

    Keywords:

    boiler tubing, computer data acquisition, computer data processing, corrosion detection, hydrogen damage, pitting detection, thickness measurement, ultrasonic evaluation


    Author Information:

    Meredith, WR
    ManagerSenior research engineer, Southwest Research Institute, San Antonio, TX

    Lamping, GA
    ManagerSenior research engineer, Southwest Research Institute, San Antonio, TX


    Paper ID: STP17434S

    Committee/Subcommittee: E07.06

    DOI: 10.1520/STP17434S


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