Discussion
Consider the following statements about non-destructive testing of ceramics.
1. Dye penetrant finds surface-breaking flaws.
2. Ultrasonics and radiography can find internal flaws.
3. Any of these methods can measure the Weibull modulus directly.
Answer: C
The first two are correct. The third is wrong, since the modulus is a statistical property derived from testing many specimens to destruction rather than something any single inspection can measure. Statistics and inspection answer quite different questions.
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