By Qi Luo
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Extra resources for Aerospace and Mechanical Engineering
The milling operations were conducted without applying any coolant, and all cutting tests were performed at the following cutting conditions (table 1), with a single insert. Table. 15 mm/tooth 2 mm Machining pass Sens X Machining cycle Y Fig. 2 Machining procedure The workpiece is machined on its length with catch of measurement at the beginning of race. Figure 2 illustrates the machining cycle. 48 Aerospace and Mechanical Engineering Results and Discussion In the first stage, to have extra-information about the cutting force, we focus on the “force signal part”.
3) Degassing had a strong effects on the cooling curve and undercooling temperature. Degassing is crucial when thermal analysis is used. To summarize, the above 3 main factors can be applied in monitoring and eventually in controlling melt quality in production of aluminum casting. Acknowledgements The authors would like to gratefully acknowledge the National Science and Technology Development Agency (NSTDA) through Young Scientist and Technologist Program (YSTP), 2012 for financial supports. S.
9 shows it; the inflection point which represents the acceleration phase of wear can be detected by a notable change on spectral energy of this frequency as shown in the spectrum plot at the 56th pass number, which characterizes the beginning of the acceleration stage of tool wear. The graph of Fig. 13 presents two states,this is an important report that can be used such as a good detector of the transition: stabilizationphase / acceleration phase of wear and it will be easily implanted in an on-line monitoring system.
Aerospace and Mechanical Engineering by Qi Luo