Assessment of viscoelastic crack bridging toughening in refractory materials
Samo za registrovane korisnike
2008
Autori
Boccaccini, Dino N.Cannio, Maria
Volkov-Husović, Tatjana
Dlouhy, I.
Romagnoli, Marcello
Veronesi, Paolo
Leonelli, Christina
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
Viscoelastic bridges can be formed in refractory ceramics while cooling from high temperatures. Such bridges can shield crack tips, thus reducing the effective crack tip stress intensity factors leading to higher resistance to creep and thermal shock. The extent to which the crack tip stress intensity is reduced can be estimated from fracture mechanics models that include experimental measurement of crack bridging and microstructural parameters. In this paper a novel approach is proposed for the assessment of the effective crack bridging toughening from combining destructive and non-destructive test methods. Fracture toughness values were determined applying chevron notched specimen technique and surface damage of the specimen was monitored by image analysis. Different cordierite-mullite compositions characterized by different microstructure morphologies and crack propagation behaviour were investigated. A brief discussion about the correlation between thermo-mechanical properties, mic...rostructure, crack propagation behaviour and thermal shock resistance is presented. Moreover, an empirical model able to determine the presence and effectiveness of the viscoelastic crack bridging ligaments acting in the microstructure under thermal shock conditions and their degradation with increasing thermal shock cycles from parameters measured at room temperature is presented.
Ključne reči:
cordierite-mullite / viscoelastic toughening / fracture toughness / image analysis / fracture mechanicsIzvor:
Journal of the European Ceramic Society, 2008, 28, 10, 1941-1951Izdavač:
- Elsevier Sci Ltd, Oxford
DOI: 10.1016/j.jeurceramsoc.2008.01.021
ISSN: 0955-2219
WoS: 000256559600003
Scopus: 2-s2.0-43049149003
Institucija/grupa
Tehnološko-metalurški fakultetTY - JOUR AU - Boccaccini, Dino N. AU - Cannio, Maria AU - Volkov-Husović, Tatjana AU - Dlouhy, I. AU - Romagnoli, Marcello AU - Veronesi, Paolo AU - Leonelli, Christina PY - 2008 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1351 AB - Viscoelastic bridges can be formed in refractory ceramics while cooling from high temperatures. Such bridges can shield crack tips, thus reducing the effective crack tip stress intensity factors leading to higher resistance to creep and thermal shock. The extent to which the crack tip stress intensity is reduced can be estimated from fracture mechanics models that include experimental measurement of crack bridging and microstructural parameters. In this paper a novel approach is proposed for the assessment of the effective crack bridging toughening from combining destructive and non-destructive test methods. Fracture toughness values were determined applying chevron notched specimen technique and surface damage of the specimen was monitored by image analysis. Different cordierite-mullite compositions characterized by different microstructure morphologies and crack propagation behaviour were investigated. A brief discussion about the correlation between thermo-mechanical properties, microstructure, crack propagation behaviour and thermal shock resistance is presented. Moreover, an empirical model able to determine the presence and effectiveness of the viscoelastic crack bridging ligaments acting in the microstructure under thermal shock conditions and their degradation with increasing thermal shock cycles from parameters measured at room temperature is presented. PB - Elsevier Sci Ltd, Oxford T2 - Journal of the European Ceramic Society T1 - Assessment of viscoelastic crack bridging toughening in refractory materials EP - 1951 IS - 10 SP - 1941 VL - 28 DO - 10.1016/j.jeurceramsoc.2008.01.021 ER -
@article{ author = "Boccaccini, Dino N. and Cannio, Maria and Volkov-Husović, Tatjana and Dlouhy, I. and Romagnoli, Marcello and Veronesi, Paolo and Leonelli, Christina", year = "2008", abstract = "Viscoelastic bridges can be formed in refractory ceramics while cooling from high temperatures. Such bridges can shield crack tips, thus reducing the effective crack tip stress intensity factors leading to higher resistance to creep and thermal shock. The extent to which the crack tip stress intensity is reduced can be estimated from fracture mechanics models that include experimental measurement of crack bridging and microstructural parameters. In this paper a novel approach is proposed for the assessment of the effective crack bridging toughening from combining destructive and non-destructive test methods. Fracture toughness values were determined applying chevron notched specimen technique and surface damage of the specimen was monitored by image analysis. Different cordierite-mullite compositions characterized by different microstructure morphologies and crack propagation behaviour were investigated. A brief discussion about the correlation between thermo-mechanical properties, microstructure, crack propagation behaviour and thermal shock resistance is presented. Moreover, an empirical model able to determine the presence and effectiveness of the viscoelastic crack bridging ligaments acting in the microstructure under thermal shock conditions and their degradation with increasing thermal shock cycles from parameters measured at room temperature is presented.", publisher = "Elsevier Sci Ltd, Oxford", journal = "Journal of the European Ceramic Society", title = "Assessment of viscoelastic crack bridging toughening in refractory materials", pages = "1951-1941", number = "10", volume = "28", doi = "10.1016/j.jeurceramsoc.2008.01.021" }
Boccaccini, D. N., Cannio, M., Volkov-Husović, T., Dlouhy, I., Romagnoli, M., Veronesi, P.,& Leonelli, C.. (2008). Assessment of viscoelastic crack bridging toughening in refractory materials. in Journal of the European Ceramic Society Elsevier Sci Ltd, Oxford., 28(10), 1941-1951. https://doi.org/10.1016/j.jeurceramsoc.2008.01.021
Boccaccini DN, Cannio M, Volkov-Husović T, Dlouhy I, Romagnoli M, Veronesi P, Leonelli C. Assessment of viscoelastic crack bridging toughening in refractory materials. in Journal of the European Ceramic Society. 2008;28(10):1941-1951. doi:10.1016/j.jeurceramsoc.2008.01.021 .
Boccaccini, Dino N., Cannio, Maria, Volkov-Husović, Tatjana, Dlouhy, I., Romagnoli, Marcello, Veronesi, Paolo, Leonelli, Christina, "Assessment of viscoelastic crack bridging toughening in refractory materials" in Journal of the European Ceramic Society, 28, no. 10 (2008):1941-1951, https://doi.org/10.1016/j.jeurceramsoc.2008.01.021 . .