Fig. 5: Porosity test and mechanical stress simulation. | Nature Communications

Fig. 5: Porosity test and mechanical stress simulation.

From: Local adaptive insulation in amorphous powder cores with low core loss and high DC bias via ultrasonic rheomolding

Fig. 5

Computed tomography (CT) images of the cold-compacted PC samples #1 (a) and #2 (b) and URPC samples #1 (c) and #2 (d). The different colors represent different pore sizes, increasing from blue to red (see color bar on the right). Schematic diagrams of the conventional (e) and biconcave-lens (f) insulation structures used to buffer the mechanical stress generated. Mechanical stress tensor (σ) distribution of the surface layers of powder particles in the conventional (g, i) and biconcave-lens (h, j) insulation structures. To avoid the shielding effect of the insulation resin on the σ distribution, the insulation resins were removed in (g–j).

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