The problem of scattering by an aggregate of spherical scatterers can be solved by resorting to the expansion of the field in terms of vector multipole fields. First, one has to determine the amplitudes of the multipole fields scattered by each one of the spheres. Then, one has to superpose the latter fields in order to get the field scattered by the whole aggregate. In this paper we
show how the contributions to the scattering amplitude of the whole aggregate due to the fields scattered by the component spheres can be superposed through the use of appropriate phases, and how the relevant quantities of the whole aggregate can be calculated by this approach, whose usefulness is also discussed.
This research introduces an advanced manufacturing method for gear part tools. In the conventional method, wire cutting and lapping of the corner region were performed after shrink fitting to ensure the accuracy of the gear profile. But lapping is difficult when the corner region is located inside of the die. The new tool manufacturing method suggests that wire cutting and lapping are performed after the 1st shrink fitting to Hollister Co Canada Coupons
facilitate lapping operation and to increase the accuracy of the corner radius. Finite element Hollister Outlet Seattle
analysis and forging test are performed. Comparison between analysis and measurement of forged part ensures the validity of suggested tool manufacturing methods.