Archives of Acoustics, 36, 1, pp. 77–85, 2011

The Defect Detection in Ceramic Materials Based on Time-Frequency Analysis by Using the Method of Impulse Noise

Tahir Cetin AKINCI
Kirklareli University, Faculty of Technology Department of Electrical and Electronics Engineering

In this study, it was achieved by using the method of impulse noise to detect
internal or surface cracks that can occur in the production of ceramic plates. Ceramic
materials are often used in the industry, especially as kitchenware and in areas such
as the construction sector. Many different methods are used in the quality assurance
processes of ceramic materials. In this study, the impact noise method was examined.
This method is a test technique that was not used in applications. The method is
presented as an examination technique based on whether there is a deformation
on the material according to the sound coming from it as a result of a plastic bit
hammer impact on the ceramic material. The application of the study was performed
on plates made of ceramic materials. Here, it was made with the same type of model
plates manufactured from the same material. The noise that would occur as a result
of the impact applied on a point determined on the materials to be tested has
been examined by the method of time-frequency analysis. The method applied gives
pretty good results for distinguishing ceramic plates in good condition from those
which are cracked.
Keywords: impulse noise; time-frequency analysis; defect detection in ceramic materials
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