Estimation of Impact-Echo Method for the Assessment of Long-Term Frost Resistance of Ceramic Tiles

Abstract

The aim of this paper is to evaluate the possibility of using the Impact-echo method for assessment of extremely long period of frost resistance of ceramic tiles. Sets of ceramic tiles of the Ia class to EN 14 411 B standard made by manufacture RACOs have been analyzed. The ceramic tiles under investigation have been subjected to 500 freeze-thaw-cycle based degradation in compliance with the relevant EN ISO 10545-12 standard. To verify the correctness of the Impact-echo method results, additional physical properties of the ceramic tiles under test have been measured. To analyze the specimen surface condition, we also used Olympus LEXT 3100 confocal scanning microscope. It has been proved that the acoustic method Impact-echo is a sensitive indicator of the structure condition and can be applied to the ceramic cladding element frost resistance and service life prediction assessment.

Analysis of Acoustic Emission Signals Recorded during Freeze-Thaw Cycling of Concrete

“…The graph in Figure 4 demonstrates how the dominant frequency for each recorded AE hit shifts towards low values during freezing and thawing. This shift is caused by the mechanical wave passing through an increasingly more damaged environment [ 40 , 41 ]. It can be observed that during the first 25 F-T cycles, the dominant frequencies reach values around 200 kHz and as the number of F-T cycles increases, the dominant frequency decreases.…”

Monitoring of Thermal Damage Evolution in Concrete Parts by Acoustic NDT Methods

“…The sensor is bee wax attached to the specimen under investigation. The recorded waveform of the signal is converted into a frequency spectrum by the Fast Fourier Transform [11,12].…”

Correlation between Parameters of Acoustic Emission and Fracture Characteristics Obtained from Three-Point Bending Test

“…Fig. 1 Typically AE signal [9] Even though many applications can be envisaged in all of the areas where composite materials are being used or could be used, it is surprising to see that the number of practical applications exploiting the AE technique has remained relatively limited [11]. The main reasons for this are the limitations of the analysis techniques discussed previously which make it difficult to extend laboratory results to industrial structures.…”