Archives of Acoustics, 25, 1, pp. 67-72, 2000

The analysis of the influence of the thermal shocks on acoustic emission signal generated in cordierite ceramics

Z. RANACHOWSKI
Polish Academy of Sciences Institute of Fundamental Technological Research
Poland

P. RANACHOWSKI
Polish Academy of Sciences Institute of Fundamental Technological Research
Poland

The paper describes a raw materials composition and manufacturing technology of cordierite material, applied to manufacturing of welding backing strips. The resistance of the cordierite specimens to thermal shock within the range of 150–320°C was analysed. Shocked samples, submitted to three - point mechanical stress, have been investigated by acoustic emission method. The results let the authors to conclude that there is a correlation between the Acoustic Emission (AE) signals parameter, describing the AE activity during the loading and the stage of material degradation caused by the applied thermal shock.
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