Acoustic emission based damage limits and their correlation with fatigue resistance of refractory masonry

Acoustic emission based damage limits and their correlation with fatigue resistance of refractory masonry

During service in industrial furnaces, refractory masonry is exposed to cyclic thermal strains. Fatigue is a frequent cause of structural failure. In this study, displacement-controlled cyclic tests are applied to quantify the fatigue resistance of two silica-based products demonstrating different b...

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Veröffentlicht in:Construction and Building Materials 2018-03, Vol.165, p.639-646
Hauptverfasser: Andreev, Kirill, Shetty, Naveen, Verstrynge, Els
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Shetty, Naveen
Verstrynge, Els
description During service in industrial furnaces, refractory masonry is exposed to cyclic thermal strains. Fatigue is a frequent cause of structural failure. In this study, displacement-controlled cyclic tests are applied to quantify the fatigue resistance of two silica-based products demonstrating different brittleness at failure. Limits for displacement producing critical damage were obtained from Acoustic Emission (AE) data. CALM and LOAD ratios, obtained from short-term cyclic tests, were used for this purpose. A correlation was found between experimental fatigue curves and AE-based damage limits. Less brittle material was found to be more susceptible to fatigue degradation in the broader amplitude range.
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title Acoustic emission based damage limits and their correlation with fatigue resistance of refractory masonry
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