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Investigation of the Thermal Shock Behavior of Ceramic Using a Combination of Experimental Testing and FE‐Simulation Methods
Author(s) -
Zhang Wei,
Doynov Nikolay,
Wolf Matthias,
Dreibati Ossama,
Ossenbrink Ralf,
Michailov Vesselin
Publication year - 2013
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201200241
Subject(s) - thermal shock , materials science , ceramic , composite material , shock (circulatory) , thermal , work (physics) , stress (linguistics) , mechanical engineering , thermodynamics , medicine , physics , linguistics , philosophy , engineering
Thermal shock behavior of ceramics plays a decisive role in their broad industrial applications. For enhanced understanding of damage and failure mechanism under thermal shock loading, in the present work, a combination of experimental testing and numerical simulation methods has been used. The thermal shock behavior of the alumina (99.7%) disk samples has been investigated by using a plasma test stand: the bottom of the ceramic disks were locally heated in the center by plasma beam; during the heat treatment the temperature distribution at the top of the sample was recorded with a thermographic system. To characterize the thermal shock resistance, a thermomechanical simulation was subsequently carried out. It calculates the temperature and stress distribution within the ceramic disks. The calculated critical thermal tension stresses are reported, which led to the failure of the ceramic disks under thermal shock loading. The effect of the sample thickness on the temperature and stress distribution is presented. Compared with the experimental results the simulated results show excellent agreement. As conclusion, it is possible to determine the thermal shock behavior of ceramic materials by the combination of experimental testing and numerical simulation.