REFERENCES 1. Oaks, M., “Letting Mr. Charpy Die - Evaluating the Usefulness of Charpy Impact Testing on Ductile Iron,” The Ductile Iron Society Spring 2012 Annual Meeting, Holiday Inn-Muskegon Harbor, OH, p. 8 (June 6-8, 2012).
2. Wallin, K., “Fracture Toughness of Engineering Materials - Estimation and Application,” p. 543, EMAS Publishing, Warrington UK (2011).
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Figure 12. Scatter in Cv
iron, compared to assumed 10% standard deviation of individual fracture toughness values.
– KJIC
a direct estimation of the nodular cast iron fracture tough- ness from Charpy-V data. For this purpose, the available database is not sufficiently enough to enable the definition of appropriate safety factors. Rather, the average behaviour of nodular cast iron, which has a larger acceptance, is com- pared to the average general behaviour of metals. This pro- vides a direct comparison of their Charpy-V impact energy equivalence with respect to fracture toughness.
Acknowledgements
This work has been performed as part of a technical con- sultancy related to the ice class rules of propulsion machin- ery, for the Finnish Transport Safety Agency (Trafi), Project 82982-3.1 / ICERU2013.
relation for nodular cast
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