Monitoring of crack-induced electromagnetic vector field based on tunnel magnetoresistance effect
Source abstract
Abstract
Electromagnetic radiation technology is widely used as a non-destructive, non-contact monitoring method, but the spatial information contained in it is ignored. A three-axis electromagnetic sensor was developed to monitor the electromagnetic radiation generated by the fracture of brittle rocks based on the tunnel magnetoresistance effect. The sensor has significant independence, anti-interference in three orthogonal directions, and exhibits high linearity. The monitored signals can be regarded as the components of the electromagnetic field vector in three directions. Based on the idea of vector synthesis, the peak index and peak matching index of the synthesized signal are extracted for the directional characterization and can be used to identify the direction of cracks.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Non-Destructive Testing Techniques · Earthquake Detection and Analysis · Geophysical Methods and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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