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    The Application of Ultrasonics to the Fabrication of Aluminum

    Published: 01 January 1951

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    The non-destructive ultrasonic test for the determination of the internal soundness of aluminum ingots, forging stock, forgings, and large rolled shapes has been found to be rapid, economical, accurate, and readily adaptable to production methods. In some finish rolled sections of critical size, notably aircraft wing spar sections where a high degree of perfection is required, a final ultrasonic inspection is made. Ultrasonic testing has been found useful in the development of new ingot casting methods and new alloys. Various rolling mill operating practices have been more intelligently evaluated through the prior knowledge of the internal quality of the ingot or bloom as afforded by an ultrasonic inspection. Like some of the other non-destructive test methods, ultrasonic testing may lead to improper conclusions concerning the quality of the product, unless the results of the test are properly interpreted. As more varied and extensive use is made of this method with aluminum products, common nomenclature can be developed and agreement on the interpretation of the results should become possible.

    Author Information:

    Carroll, J. V.
    Metallurgist, Aluminum Company of America, Massena, N. Y.

    Committee/Subcommittee: E07.06

    DOI: 10.1520/STP46810S