Deformation study and analysis of static and rotating aluminium blades by using magnetoelastic sensors
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Σαμουργκανίδης, Γεώργιος
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Abstract
A key part of this work is the in situ study and analysis of the mechanical deformation of rotating metallic aluminum plates, import disaster on them, using magnetoelastic sensors. The purpose of this study is to detect in real time the deformation through the magnetoelastic sensor, caused by the introduction of disasters and then analyze these to derive the health of the blades as they rotate. The magnetoelastic sensor playing the role of the transmitter which receives the information from the blades and sends it to a coil (magnetic speaker) which having the role of the receiver. The information the magnetoelastic sensor receives, contains the response of the resonance frequencies of the blades when introduced into these mechanical impulse excitation. The significance to this information is that as damages inserted into the blade, the natural frequencies of it are shifted relative to the original blade, in which the material is not deformed.
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Keywords
Magnetostriction, Μechanical deformations, Metallic glasses, Magnetic sensors