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Precision forging is defined as a near net-shape forging operation which generates high quality parts concerning surface quality and dimensional accuracy. In particular gears offer a wide application field for the precision forging technology. Advantages like shortened production cycles achieved by eliminating machining operations and the saving of raw material contribute to the ongoing cost-saving...
Rigorous SAW device analysis methods, such as FEM/SDA rely upon the accurate characterization of the elastic moduli and mass density for both the piezoelectric substrate as well as the materials comprising the devices' thin film electrodes. As the values for the moduli and density of thin films may be significantly different than those for bulk materials, and vary with the deposition process, a means...
Due to the smaller size of HDD, fault deformation of solder bumps is found more often. In order to study about a factor relating to fault deformation of solder bumps, the FEM is used to investigate stress performance. The results show that a small number of bumps positioned in a symmetric form have similar stress while a small number of bumps positioned in the asymmetric form have different stress...
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