Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Impedance-based structural health monitoring analysis for damage identification on a rotor.
Submission Author:
Igor Guedes Faria , MG
Co-Authors:
Vitor Sant'Ana, Roberto Mendes Finzi Neto, Karina Mayumi Tsuruta, Igor Guedes Faria
Presenter: Igor Guedes Faria
doi://10.26678/ABCM.COBEM2017.COB17-2299
Abstract
Impedance-based structural health monitoring method uses electromechanical impedance to identify possible damages and improve safety of operation. This experimental analysis used patches of piezoelectric material bonded to different rotor axes positions. An evaluation impedance board acquired data to be treat on the method. To better understand the impedance signal changes on a working rotor compared to a stopped one the data acquisition happened in different rotational speeds. It is possible to identify the correlation between stopped and non-stopped impedance signal, so compensation shift was introduced to improve results quality. We introduced a simulation of damage, using a known weight fixed in the axes of the rotor, so we could compare the differences of signal between heath and damaged condition. The purpose of this work is to evaluate different damage metrics to identify damage on a rotor and understand relations between changes on impedance signal and rotational speed.
Keywords
impedance-based, Piezoelectric, rotor, Damage, health monitoring
