Abstract
Porosity assessment of flat smooth surface cast aluminum samples by ultrasonic attenuation spectroscopy were found to be in good agreement with other porosity assessment methods, e. g., weight-density, and optical techniques [1], Ultrasonic results were also obtained for samples with their as-cast rough surface intact. The volume fraction of porosity in these samples were unacceptably underestimated [2]. Since it is not feasible to maintain a smooth surface, especially for large castings prior to ultrasonic assessment, a technique to compensate for surface roughness was considered.
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References
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© 1987 Springer Science+Business Media New York
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Nagy, P.B., Rypien, D.V., Adler, L. (1987). Surface Roughness Effects in Porosity Assessment by Ultrasonic Attenuation Spectroscopy. In: Thompson, D.O., Chimenti, D.E. (eds) Review of Progress in Quantitative Nondestructive Evaluation. Review of Progress in Quantitative Nondestructive Evaluation, vol 6 A. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-1893-4_162
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DOI: https://doi.org/10.1007/978-1-4613-1893-4_162
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