Figure 10
Workflow showing electrical discharge machining, tensile sample cutting, and tensile test specimens for B M D 4140 and L P B F cobalt chromium gears.The workflow illustrates preparation and testing of tensile specimens from manufactured gears. At the top left, a standard tensile specimen drawing labelled with dimensions L, A, B, W, C, G, R, and T is shown. At the top right, tensile test specimens labelled B M D 4140 and L P B F cobalt chromium are displayed. The lower sequence begins with a gear mounted for Electrical Discharge Machining, E D M, followed by an extracted gear component. An arrow points to the next stage labelled Tensile Samples Cutting according to A S T M E 8. The final image shows a gear with cut sections removed for specimen preparation.

Schematic diagram of the tensile specimen; the additively manufactured tensile specimens, and the experimental workflow for specimen extraction from the original gray cast iron eccentric gear

Source: Authors’ own work

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