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    Correlation of Cavitation Damage with Other Material and Fluid Properties

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    Ultrasonic-induced cavitation studies were conducted in lead-bismuth alloy at 500 and 1500 F, in mercury at 70 and 500 F, and in water at 70 F for a wide variety of materials, including refractory alloys, steels, brasses, copper, nickel, and plastics. Correlations of the cavitation damage with applicable mechanical and fluid properties were carried out. Some conclusions are: 1. Damage rates in mercury were 3 to 20 times greater than in water, depending upon the material. Hence, clearly no correlating equation which considers only the mechanical properties of the material can apply for both fluids. 2. There is no single material mechanical property which can be used to correlate the damage, even if coupling parameters to account for fluid property changes are included in the correlation. 3. In general, the best correlations include energy-type mechanical properties, strength-type properties, and fluid coupling parameters. 4. No relatively simple single correlating equation applies well to all the data. This may indicate the insufficiency of the statistically determined mechanical and fluid properties for the correlation of cavitation damage which is known to be a highly transient process.


    cavitation, ultrasonics, vibration, refractory materials, stainless steels, erosion, water, mercury, lead-bismuth, liquid metals, high temperature, mechanical properties, fluid properties, corrosion, pitting

    Author Information:

    Garcia, R.
    senior engineer, The University of Michigan, Ann Arbor, Mich.Aerojet-General Corp., Azusa, Calif.

    Hammitt, F. G.
    Professor of nuclear engineering, The University of Michigan, Ann Arbor, Mich.

    Nystrom, R. E.
    Doctoral applicant, The University of Michigan, Ann Arbor, Mich.

    Committee/Subcommittee: G02.10

    DOI: 10.1520/STP46052S