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Nanoindentation FAQs
How much does Poisson's ratio affect my nanoindentation results?
Poisson's ratio doesn't affect the calculation of hardness at all, and the calculation of Young's modulus is only weakly sensitive to Poisson's ratio. A generous uncertainty in Poisson's ratio (0.25 +/- 0.1) leads to a relative uncertainty in Young's modulus of +/- 5%.