The magneto-mechanical behaviour of structural steel specimens stressed up to the plastic deformation stage was investigated using a 2nd order gradiometer based on Giant Magneto Resistive (GMR) sensors. The correlation between the gradient of the magnetization and the dislocation density before the crack initiation inside the test material was reported. The capability of the GMR scanning sensor to detect the residual magnetization due to the tensile stress with a non-invasive technique was demonstrated.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6806181 | PMC |
| http://dx.doi.org/10.3390/s19194147 | DOI Listing |
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