Introduction

This chapter introduces various advanced machining processes and optimization techniques discussed in this book. It starts with an introduction and classification of advanced machining processes such as electric discharge machining, electrochemical machining, ultrasonic machining, abrasive water jet machining, and laser beam machining. The introduction is followed by multi-criteria decision-making (MCDM) techniques that have been used in the aforementioned advanced processes. Based upon the literature review conducted by the authors, the statistics as regards to the percentage use of various MCDM techniques in case of advanced processes is discussed. The chapter ends on conclusion with possible hope to conduct future research on modeling and optimization of advanced machining processes using various single and hybrid MCDM techniques.