Tham khảo tài liệu 'properties and applications of silicon carbide part 17', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 472 Properties and Applications of Silicon Carbide determining the wt. Nevertheless there have been very limited reports on studying the influence of a in the presence of variation in v for AWJ milling applications. For machining milling turning and drilling of different materials such as stainless steel 304 Ti-6-4 and ceramics an improved depth of cut h a MRR and surface finish are observed with the change in jet impingement angle Wang 2003 Hashish 1993 . However there are very limited studies that have considered the influence of a on top width of JFP. Although some empirical models exist for prediction of geometrical characteristics of the JFP they cannot readily be adoptable for AWJ milling as are developed for cutting applications most of the models in the literature have assumed the top width of kerf is equal to the df which is not true in practice due to the divergence of jet plume Srinivasu et al. 2009 . From the literature review it is inferred that the key enabling element for generation of complex geometries in AEMs using AWJ technology is a unified understanding of the influence of the interaction of jet at different feed rates and impingement angles on the JFP generated. Furthermore there is a need to develop models for prediction of the geometry of the JFP and its dimensional characteristics such as top width of kerf in 2-axis 5-axis macro micro milling. In order to address the above issues in this chapter the research work done at the University of Nottingham under the NIMRC sponsored research project titled Freeform Abrasive Waterjet Machining in Advanced Engineering Materials Freeform_JET under the following headings was presented i comprehensive investigation on the physical phenomenon involved in the formation of JFP ii development of models for a prediction of geometry and b top width of the JFP. 2. Experimentation and methodology In order to understand the physical phenomenon involved in generation of the geometry of the JFP at various jet .
