The Direct Current Potential Drop (DCPD) method has been investigated to estimate the crack size in axial fatigue of single-edge-crack round bars. The measurability, sensitivity, and reproducibility of the DCPD measurement have been evaluated by means of 3D electrical FE analyses for a range of geometrical configurations of current and potential probes. The accuracy of the numerical analyses has been checked against results of crack propagation experiments, where a compact clip-on gauge device seating both current and potential probes of the DCPD equipment has been adopted.
Numerical calibration and experimental validation of the direct current potential drop (DCPD) method for fracture mechanics fatigue testing of single-edge-crack round bars
Vecchiato, L.;Campagnolo, A.;Meneghetti, G.
2021
Abstract
The Direct Current Potential Drop (DCPD) method has been investigated to estimate the crack size in axial fatigue of single-edge-crack round bars. The measurability, sensitivity, and reproducibility of the DCPD measurement have been evaluated by means of 3D electrical FE analyses for a range of geometrical configurations of current and potential probes. The accuracy of the numerical analyses has been checked against results of crack propagation experiments, where a compact clip-on gauge device seating both current and potential probes of the DCPD equipment has been adopted.File in questo prodotto:
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