Dressing Tool Condition Monitoring through Impedance-Based Sensors: Part 1-PZT Diaphragm Transducer Response and EMI Sensing Technique

Author(s)

Junior, Pedro ^[1] ; D'Addona, Doriana M. ^[2] ; Aguiar, Paulo R. ^[1] ; Teti, Roberto ^[2]

Affiliation

^[1] Univ Estadual Paulista, UNESP, Dept Elect Engn, Fac Engn, Av Engn Luiz Edmundo C Coube 14-01, BR-17033360 Bauru, SP - Brazil

^[2] Univ Naples Federico II, Dept Chem Mat & Ind Prod Engn, Piazzale Tecchio 80, I-80125 Naples - Italy

• Document type: Journal article
• Source: SENSORS; v. 18, n. 12 DEC 2018.
• Web of Science Citations: 4

Abstract

Low-cost piezoelectric lead zirconate titanate (PZT) diaphragm transducers have attracted increasing attention as effective sensing devices, based on the electromechanical impedance (EMI) principle, for applications in many engineering sectors. Due to the considerable potential of PZT diaphragm transducers in terms of excellent electromechanical coupling properties, low implementation cost and wide-band frequency response, this technique provides a new alternative approach for tool condition monitoring in grinding processes competing with the conventional and expensive indirect sensor monitoring methods. This paper aims at assessing the structural changes caused by wear in single-point dressers during their lifetime, in order to ensure the reliable monitoring of the tool condition during dressing operations. Experimental dressing tests were conducted on aluminum oxide grinding wheels, which are highly relevant for industrial grinding processes. From the results obtained, it was verified that the dresser tip diamond material and the position of the PZT diaphragm transducer mounted on the dressing tool holder have a significant effect on the sensitivity of damage detection. This paper contributes to the realization of an effective monitoring system of dressing operations capable to avoid catastrophic tool failures as the proposed sensing approach can identify different stages of the dressing tool lifetime based on representative damage indices. (AU)

• FAPESP's process: 17/16921-9 - A new approach for dressing operation monitoring based on electromechanical impedance using computational intelligence
• Grantee: Pedro de Oliveira Conceição Junior
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• FAPESP's process: 16/02831-5 - Structural health monitoring system of dressers based on electromechanical impedance measurements
• Grantee: Pedro de Oliveira Conceição Junior
• Support Opportunities: Scholarships in Brazil - Doctorate