In-process grinding monitoring by acoustic emission
Nenhuma Miniatura disponível
Data
2004-01-01
Autores
Aguiar, P. R.
Serni, PJA
Bianchi, E. C.
Dotto, FRL
Título da Revista
ISSN da Revista
Título de Volume
Editor
IEEE
Resumo
This work aims to investigate the efficiency of digital signal processing tools of acoustic emission signals in order to detect thermal damages in grinding process. To accomplish such a goal, an experimental work was carried out for 15 runs in a surface grinding machine operating with an aluminum oxide grinding wheel and ABNT 1045. The acoustic emission signals were acquired from a fixed sensor placed on the workpiece holder. A high sampling rate data acquisition system at 2.5 MHz was used to collect the raw acoustic emission instead of root mean square value usually employed. Many statistics have shown effective to detect burn, such as the root mean square (RMS), correlation of the AE, constant false alarm (CFAR), ratio of power (ROP) and mean-value deviance (MVD). However, the CFAR, ROP, Kurtosis and correlation of the AE have been presented more sensitive than the RMS.
Descrição
Palavras-chave
Como citar
2004 IEEE International Conference on Acoustics, Speech, and Signal Processing, Vol V, Proceedings. New York: IEEE, p. 405-408, 2004.