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Chapter 11: Modeling and Optimization of... > 6. FUTURE RESEARCH DIRECTIONS - Pg. 283

Modeling and Optimization of Abrasive Water Jet Cutting of Kevlar Fiber-Reinforced Polymer Composites are the main conclusions derived as an outcome of the present work: · To the best of the authors knowledge such a comprehensive study on MOO of AWJ cutting of FRPs is not reported so far. Kevlar composite prepregs (thin and thick both) used in the Indian transport aircraft sector and anti-ballistic applications have been chosen for investigation. No case study is reported in the literature, on the DOC modeling of thick Kevlar-epoxy composites and MOO of various KQCs in AWJ cutting of these grades of FRP com- posites, making it a novel contribution. A model for predicting DOC in AWJC of thick (upto 1") Kevlar-epoxy compos- ites has been developed and the obtained trends of DOC are in agreement with the findings of (Wang and Guo, 2002). · · · A 3 B 2 C 3 D 1 , respectively, for the three com- bination of weights (w1 = 0.2, w2 = 0.8; w1 and w2 = 0.5; and w1 = 0.8, w2 = 0.2). Multi-utility method has also been used for the same combination of weights assigned to each quality characteristic for cross-val- idation of the above findings. However this method was not discussed in this chapter. However, the obtained optimum parameter settings are different from SOO results of R a and TKW, because of the simultaneous optimization of multiple quality charac- teristics of opposite nature, which leads to some amount of quality loss which are in agreement with the findings of (Dubey and Yadava, 2008). This quality loss is attrib- uted to the attempt at simultaneous control and optimization of multiple performance characteristics and is also dependent on the weights assigned to each characteristic.