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New Method to Measure Thermal Shock Resistance in Ceramics Using a Piezo‐Spectroscopic Technique
Author(s) -
De Portu Gofferedo,
Micele Lorenzo,
Roldán Gutiérrez Manuel Alberto,
Puppulin Leonardo,
Munisso Maria Chiara,
Melandri Cesare,
Pezzotti Giuseppe
Publication year - 2008
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2007.02245.x
Subject(s) - thermal shock , materials science , ceramic , residual stress , shock (circulatory) , composite material , measure (data warehouse) , stress (linguistics) , relaxation (psychology) , thermal , residual strength , thermodynamics , physics , computer science , medicine , psychology , social psychology , linguistics , philosophy , database
A new method for assessing the critical temperature in thermally shocked ceramics is proposed. It is based on the measurement of stress relaxation of residual stresses as a consequence of thermal shock. The change in the stress‐field is determined by piezo‐spectroscopic technique. The technique is described and the results analyzed. The values obtained are compared with those obtained by the conventional method based on strength degradation measured on test pieces quenched at different temperatures. The agreement among the data is very good.