High Sensitive Methods for Health Monitoring of Compressor Blades and Fatigue Detection

Figure 15

Experimentally obtained magnetomechanical hysteresis loop 𝑀(𝜎(𝑡)) for different setting of external DC magnetic field 𝐻₀ (full lines) and compared to the reversible anhysteretic magnetomechanical behaviour at corresponding setting of 𝐻₀ (dashed line with symbols). Material: low carbon steel with 0,12% C [76].