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Based on the central composite rotatable design (CCD), clad beads of Inconel 625 were deposited on the surface of AISI 4130 plates using hot wire pulsed TIG (tungsten inert gas arc welding) technique. The response surface methodology (RSM) was used to establish models between process parameters and geometrical characteristics of the clad beads. Then, multiple-track two-layer weld overlay was deposited...
Electrostatic detection devices can detect humans by measuring changes in an electrostatic field to indicate the precise location and direction of the subject entity. To analyse the principle of the electrostatic detection system, the mechanisms for generating the human beings' bioelectrical phenomenon are analysed. The human being is regarded as a point charge and constitutes a system with the obstacle...
The conventional signal generators are often unable to produce the specific or complex signals. An arbitrary waveform generator has been designed with LabVIEW and virtual instrumentation technology. The generator not only can produce sine wave, triangle wave and other conventional waveform, but also can generate a variety of demanding modulated signals and M sequence signals. Even more, it can produce...
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