A Time-Frequency Acoustic Emission-Based Technique to Assess Workpiece Surface Quality in Ceramic Grinding with PZT Transducer

Autor(es)

Aulestia Viera, Martin A. ^[1] ; Aguiar, Paulo R. ^[1] ; Oliveira Junior, Pedro ^[1] ; Alexandre, Felipe A. ^[1] ; Lopes, Wenderson N. ^[1] ; Bianchi, Eduardo C. ^[2] ; da Silva, Rosemar Batista ^[3] ; D'addona, Doriana ^[4] ; Andreoli, Andre ^[1]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ UNESP, Dept Elect Engn, Av Engn Luiz Edmundo Carrijo Coube 14-01, BR-17033360 Bauru - Brazil

^[2] Sao Paulo State Univ UNESP, Dept Mech Engn, Av Engn Luiz Edmundo Carrijo Coube 14-01, BR-17033360 Bauru - Brazil

^[3] Univ Fed Uberlandia, Sch Mech Engn, Av Joao Naves de Avila 2121, BR-38408100 Uberlandia, MG - Brazil

^[4] Univ Naples Federico II, Fraunhofer Joint Lab Excellence Adv Prod Technol, Dept Chem Mat & Ind Prod Engn, Piazzale Tecchio 80, I-80125 Naples - Italy

• Tipo de documento: Artigo Científico
• Fonte: SENSORS; v. 19, n. 18 SEP 2 2019.
• Citações Web of Science: 0

Resumo

Innovative monitoring systems based on sensor signals have emerged in recent years in view of their potential for diagnosing machining process conditions. In this context, preliminary applications of fast-response and low-cost piezoelectric diaphragms (PZT) have recently emerged in the grinding monitoring field. However, there is a lack of application regarding the grinding of ceramic materials. Thus, this work presents an analysis of the feasibility of using the acoustic emission signals obtained through the PZT diaphragm, together with digital signal processing in the time-frequency domain, in the monitoring of the surface quality of ceramic components during the surface grinding process. For comparative purpose, an acoustic emission (AE) sensor, commonly used in industry, was used as a baseline. The results obtained by the PZT diaphragm were similar to the results obtained using the AE sensor. The time-frequency analysis allowed to identify irregularities throughout the monitored process. (AU)

• Processo FAPESP: 18/07292-0 - Diafragma piezelétrico e processamento digital de sinais na estimação da rugosidade de componentes cerâmicos no processo de retificação
• Beneficiário: Martin Antonio Aulestia Viera
• Modalidade de apoio: Bolsas no Brasil - Mestrado