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Problem statement: Most Nickel based Hastelloy C-276 is a difficult-to-machine material&#13; because of its low thermal diffusive property and high strength at high temperature. Machinability&#13; consideration of nickel based Hastelloy C-276 in turning operations has been carried out using ceramic&#13; inserts under dry conditions. Approach: This study described a modification approach applied to a&#13; fuzzy logic based model for predicting cutting force where the machining parameters for cutting speed&#13; ranges, feed rate, depth of cut and approach angle are not overlapping. For this study, data were&#13; selected depending on the design of experiments. Response surface methodology was applied to&#13; predict the cutting force and to examine the fuzzy logic based model. Results: The modification&#13; approach fuzzy logic based model produced the cutting force data providing good correlation with&#13; response surface data. In this situation the cutting force data were superimposed and results were&#13; adjusted according to their own ranges. Conclusion: A review of literatures on optimization&#13; techniques revealed that there were, in particular, successful industrial applications of design of&#13; experiment-based approaches for optimal settings of process variables

Modification Approach of Fuzzy Logic Model for Predicting of Cutting Force When Machining Nickel Based Hastelloy C-276