Eventos Anais de eventos
DINAME 2023
XIX International Symposium on Dynamic Problems of Mechanics
Crack identification through natural frequencies and fatigue crack propagation modeling of a shaft
Submission Author:
Marcelo Martins , RJ
Co-Authors:
Marcelo Martins, Leonardo Medeiros Lacerda
Presenter: Marcelo Martins
doi://10.26678/ABCM.DINAME2023.DIN2023-0100
Abstract
Identifying cracks in shafts requires specific instrumentation. Research developed by Bently and Muszynska (1986) presents an identification by using vibration, showing the possibility of crack propagation monitoring using the orbit technique and associating with the natural modes. Other works such as Lebold et al. (2003) and Lissenden et al. (2007) have correlated experimental and computational results in order to track crack progression. This work presents a prediction method for the natural frequencies monitoring during crack propagation and it can be made with already available instruments in predictive maintenance routine aided by computational simulation tools. To carry out this research, theoretical and experimental methods were explored to determine the natural frequencies of a machined shaft made with SAE 1045 carbon steel which included computer simulation and monitoring of vibration and sound. A comparison of the results was performed to validate the applied methodology and characterization.
Keywords
Crack propagation, shaft, natural frequencies, Impact Test, Vibration Analysis
