The development of a laboratory-based tailor-welded blank (TWB) inspection system using the principles of magnetic flux leakage (MFL) is presented. The effects of variations in inspection system operating parameters are quantified to allow for optimized system performance. The parameters examined include the applied magnetic field strength, inspection scanning velocity, spatial resolution of acquired signals, specimen end effects, and pole piece liftoff. The results indicate that this inspection method is relatively insensitive to operating parameters and is therefore robust.
The paper outlines the application of a unique Pulsed Current technique to the Acid Copper Electrolyte used in the PCB industry. It discusses some of the inherent difficulties associated with conventional DC plating and how these pulsing techniques can overcome them to enable the production of a higher quality product despite the ever increasing demands being placed on manufacturers for better distribution and through‐hole plating.
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