Abstract
Nickel-based superalloys are extensively used in modern manufacturing industries like aerospace and missile industries due to their exceptional mechanical properties at elevated temperatures. Nickel-based superalloy sheets in general and Inconel 718 sheet, in particular, are used for casing of jet engines, aeroengine turbine blades, and pump bodies and parts. Among various advanced sheet cutting processes (ASCPs), laser beam cutting (LBC) is the most suitable process for cutting of Inconel 718 thin sheet. In this chapter, experimental modeling and optimization of Nd:YAG laser cutting of Inconel 718 thin sheet have been carried out. In these studies, top kerf width (TKW), bottom kerf width (BKW), and top kerf deviation (TKD) are considered as cut quality characteristics. The laser cutting parameters considered are oxygen pressure (OP), pulse width (PW), pulse frequency (PF), and cutting speed (CS) for the study. The experimental models have been developed by using the artificial neural network (ANN) technique. Finally, the process has been optimized using genetic algorithm (GA) and grey relational analysis (GRA).
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Joshi, P., Sharma, A., Yadava, V., Modi, Y.K. (2019). Nd:YAG Laser Cutting of Ni-Based Superalloy Thin Sheet: Experimental Modeling and Process Optimization. In: Dixit, U., Joshi, S., Davim, J. (eds) Application of Lasers in Manufacturing. Lecture Notes on Multidisciplinary Industrial Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-13-0556-6_8
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