摘要: Micromagnetic theory explains the existence of Bloch-walls (BW), which describes why ferrous materials have a domain structure, and it interaction BW with lattice imperfections internal stresses. The magnetostrictive electromagnetic interactions between regions where local disturbances magnetic properties are sources for electrostatic stress fields. Nondestructive parameters can be derived from macroscopic parameters. Stresses measured sensors in set-up technique reversible (rev), irreversible (irr), rotation processes (RP). most important influencing factors as principal stresses, microstresses, temperature, microstructure discussed chapter. Turbine blades last stage row low-pressure (LP) turbine sections must operate high moisture. techniques perform tests fast without surface contact.
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