Papers by Keyword: Single Point

Abstract: The main objects of this paper are to deal with the new technology of metal sheet forming using the incremental single-point tool to form the sheet metal. However, due to the needed long time to form the metal in incremental so that we used punching and then incremental forming to geometry the final shape of the product. By measuring the thickness and longitudinal strain and evaluating the hoop strain, it was noticed that the less depth in punching with less step size in incremental forming have a better strain effect in metal sheet forming. Keywords: Single point, incremental forming, Strain analysis, step size.

Abstract: Rotation construction method includes building the bridge parallel to the obstacle being spanned (a river, a highway or a railway) and then rotating the superstructure into place. The method can optimize bridge construction in terms of reducing impacts on traffic, safety, and overall project budget and duration. Therefore, the method became so popular that it has been used successfully in about one-hundred bridges in China. In this paper , taking the Suifenhe cable-stayed Bridge as project background, the design idea (single point with flat hinge) of bearing system has been brought forward. The successful rotation construction of Suifenhe cable-stayed Bridge proved the feasibility and technical advancement of the horizontal rotation construction method with flat hinge in similar engineering construction, especially the bridges with symmetry structure.

Abstract: This paper investigates the deformation in monocrystalline silicon subjected to single-point cutting with the cutting speed up to 46.78 m/s, the depth of cut of 2 μm, and the feed rate of 5 and 30 μm/rev. Raman spectroscopy and transmission electron microscopy were used to characterize the subsurface damages. It was found that the increase of either the feed rate or cutting speed increases the thickness of amorphous layer and penetration depth of dislocations. At the feed rate of 30 μm/rev and cutting speed of 12.48 m/s, a new dislocation system was initiated. An unknown peak was detected by Raman spectroscopy, which may indicate an unknown Si phase.