Effect of cyclic loading at elevated temperatures on the magnetic susceptibility of a magnetite-bearing ore

Katarzyna Dudzisz , Mario Walter, Ralf Krumholtz , Boris Reznik & Agnes Kontny
Rocks are often subjected to dynamic stress that occurs during earthquakes, volcanic activity as well as human-induced activities. The aim of this study is to test if mechanical fatigue in rocks can be monitored by magnetic methods. For this purpose, the effect of cyclic-mechanical loading (150 + 30 MPa) on the magnetic susceptibility and its anisotropy of a magnetite-bearing ore with varying temperatures and environment was investigated. Our study shows that magnetic susceptibility decreases significantly...
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