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A contribution to the monitoring of ceramic surface quality using a low-cost piezoelectric transducer in the grinding operation
* 1 , 1 , 1 , 1 , 2 , 3 , 1 , 4
1  São Paulo State University – UNESP – Faculty of Engineering, Department of Electrical Engineering
2  School of Mechanical Engineering, Federal University of Uberlandia
3  University of Naples Federico II - Fraunhofer Joint Laboratory of Excellence on Advanced Production Technology (Fh-J_LEAPT Naples) Dept. of Chemical, Material and Industrial Production Engineering,
4  São Paulo State University – UNESP – Faculty of Engineering, Department of Mechanical Engineering


The grinding process is usually one of the last stages in the manufacturing process chain since it can provide superior surface finish and closer dimensional tolerances. However, due to peculiarities of the grinding process, workpiece material is susceptible to many problems, what demands a reliable real-time monitoring system. Some grinding monitoring systems have been proposed by means of sensors. However, literature is still scarce in terms of employing time-frequency analysis techniques during grinding of ceramics. Thus, this paper proposes an application of the low-cost piezoelectric transducer (PZT - lead zirconate titanate) in the analysis of the surface quality of ceramic workpieces during grinding process by means of frequency-time domain technique along with the ratio of power parameter (ROP). An integrated high-cost commonly used acoustic emission (AE) sensor was employed in order to compare the results with the low-cost PZT transducer. Tests were performed using a peripheral surface grinding machine. Three values of depth of cut were selected in order to represent slight, moderate and severe grinding conditions. Piezoelectric signals were collected at 2 MHz. The short-time Fourier transform (STFT) was studied in order to obtain the frequency variations over time. An analysis of the ratio of power (ROP) values was performed in order to establish a correlation with the surface roughness. The ROP values are highly desirable for setting a threshold to detect the workpiece surface quality and implementing into a monitoring system. The results of the PZT transducer had a great similarity to those of the AE sensor.

Keywords: Low-Cost Piezoelectric Transducer; Monitoring; Grinding; Ceramic; Digital Signal Processing
Comments on this paper
Jessica Wilen
Amazed to read this info
A very appealing article has been written on ‘monitoring of ceramic surface quality’ which will surely add a grand contribution in the grinding operation. I need essay writers for my assignment. In this paper, reliable real-time monitoring system is mentioned.

Sara Martin
The Literature is Limited To Prove
The Grinding process is normally started in the last stage of manufacturing. While the literature shows that the monitoring system of the grinding process can be done through sensors. While the study is very limited to prove this process more reliable however with some coursework help UK we come to the conclusion that this can only approve when the study shows its generalizability. Therefore, many studies are needed to identify its impact.

William Riley
Therefore, this paper proposes an application of low-cost piezoelectric transducer (PZT) to analyze the surface quality of ceramic workpieces by frequency-time domain technology and power ratio (ROP) during grinding. BY:Essay writing service UK - Essays Tigers.

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