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Nondestructive Testing of Small Castings
Figure 1-3
Figure 1 - Some typical casting for the automotive industry
Figure 2 - Effects of discontinuities on one resonance: the top curve is free of discontinuities; the middle curve is with a small discontinuity; the bottom curve is with a large discontinuity.
Figure 3 - Correlation of yield strength with resonance frequency (with reference to Kovacs [1977] and Enerson [1974]).
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