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Device for comparative evaluation of the heat resistance of ceramic specimens by recording acoustic emission

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Refractories and Industrial Ceramics Aims and scope

A device is described for comparative evaluation of the thermal shock resistance of ceramic specimens of identical shape and dimensions by recording acoustic emission (AE) pulses during air cooling from 1000C. The number of AE pulses in a unit of time, whose intensity exceeds the 10% level of maximum signal intensity, is used as a comparative characteristic for thermal shock resistance of ceramic materials. Comparison of the AE pulse distribution with respect to amplitude contains additional information about the thermal shock resistance of comparable specimens. With use of high-temperature furnaces with a considerable working volume and treatment of repeated cooling conditions the measurement part of the device may be used for evaluating the comparative thermal shock resistance of ceramic specimens and objects of any shape and size during cooling from above 1000°C.

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References

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Translated from Novye Ogneupory, No. 5 pp. 44–47, May 2009.

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Voinich, E.V., Frolov, A.A. Device for comparative evaluation of the heat resistance of ceramic specimens by recording acoustic emission. Refract Ind Ceram 50, 204–207 (2009). https://doi.org/10.1007/s11148-009-9169-9

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  • DOI: https://doi.org/10.1007/s11148-009-9169-9

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