New PDF release: Transactions on Engineering Technologies: Special Volume of

By Gi-Chul Yang, Sio-long Ao, Len Gelman

This ebook comprises revised and prolonged study articles written by way of well-liked researchers partaking within the foreign convention on Advances in Engineering applied sciences and actual technological know-how (London, U.K., 3-5 July, 2013). subject matters coated contain mechanical engineering, bioengineering, net engineering, snapshot engineering, instant networks, wisdom engineering, production engineering, and commercial purposes. The ebook deals nation of paintings of super advances in engineering applied sciences and actual technological know-how and functions, and likewise serves as a superb reference paintings for researchers and graduate scholars operating with/on engineering applied sciences and actual science.

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Additional info for Transactions on Engineering Technologies: Special Volume of the World Congress on Engineering 2013

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However, there are couple of discrepancies which require explanation. Firstly, it was observed that the initial age hardening period (denoted by a decrease in shear force) were shorter for 175 °C compared to 150 °C. When aged at 175 °C, the shear force was initially decreased up to 100 h, whereas at 150 °C, the shear force was observed to decrease up to 200 h. As stated previously, Xiao Shear Strength and Fracture Surface Studies of Ball Grid Array 37 Fig. 5Ag BGA solder joints as a function of ageing time et al.

Depth of cut also changes the cutting force significantly and the dependence is linear. Varying the depth of cut and the feed rate, yields a method of controlling cutting force [1]. Machining with a positive tool orthogonal rake angle will decrease the cutting force but at the same time increase the possibility of destruction of the tool. Dimensional error can be affected by cutting speed in various ways including increasing thermal distortion, altering tool wear, elastic deformation of the work piece and formation of a built-up edge (BUE).

2 0 C0 C1 C2 C0 C1 C2 C0 C1 C2 A0 A0 A0 A1 A1 A1 A2 A2 A2 Fig. 8 Comparison of cutting power for different levels of depth of cut and cutting speed versus different levels of feed rate 50 B. Boswell et al. 00 A0 A1 A2 B0 B1 B2 C0 C1 C2 0 1 2(BxC) Machining Parameter Level Fig. 9 Response graph for length error was B1C0. , the highest level of cutting speed, medium level of feed rate and low level of depth of cut. 84 %). 13 %). Figure 10 shows that in term of individual effects, machining parameter A (cutting speed) had the most significant effect on width error, followed by C (depth of cut) and then B (feed rate).

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