Interfacial crack behavior in the stationary temperature field conditions
Apstrakt
The brittle coatings, made of different materials, when subjected to elevated temperatures and in the heat exchange conditions, are susceptible to delamination. Those coatings, as well as thin films, can be used for various therm insulating deposits, e.g. in turbines of thermal power plants. Due to environmental temperature change, in layers made of materials having different thermal expansion coefficients, appear thermal stresses. In this paper driving forces causing delamination of one layer from the other are analyzed i.e. the interfacial fracture in the two-layered, bi-material sample. This analysis was limited to considering the sample behavior when exposed to the stationaiy temperature field. The energy release rate G, which is the driving force for this interfacial fracture, is changing with temperature and that variation is increasing with increase of the temperature difference between the environment and the sample. Analysis of this relation, between the G variation and temper...ature difference, can be used to predict the maximal temperature difference, which the two-layered sample can be subjected to, without appearance of delamination between layers.
Ključne reči:
two-layered sample / thermal stresses / stationary temperature field / interfacial crackIzvor:
Thermal Science, 2014, 18, S169-S178Izdavač:
- Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
Finansiranje / projekti:
- Slovak Government Agency - SAIA
- Dinamika hibridnih sistema složenih struktura. Mehanika materijala (RS-MESTD-Basic Research (BR or ON)-174001)
- Mikromehanički kriterijumi oštećenja i loma (RS-MESTD-Basic Research (BR or ON)-174004)
- Razvoj softvera za rešavanje spregnutih multifizičkih problema (RS-MESTD-Technological Development (TD or TR)-32036)
DOI: 10.2298/TSCI120828113D
ISSN: 0354-9836
WoS: 000338690200019
Scopus: 2-s2.0-84907055770
Institucija/grupa
Inovacioni centarTY - JOUR AU - Djoković, Jelena M. AU - Nikolić, Ružica R. AU - Živković, Katarina PY - 2014 UR - https://machinery.mas.bg.ac.rs/handle/123456789/2024 AB - The brittle coatings, made of different materials, when subjected to elevated temperatures and in the heat exchange conditions, are susceptible to delamination. Those coatings, as well as thin films, can be used for various therm insulating deposits, e.g. in turbines of thermal power plants. Due to environmental temperature change, in layers made of materials having different thermal expansion coefficients, appear thermal stresses. In this paper driving forces causing delamination of one layer from the other are analyzed i.e. the interfacial fracture in the two-layered, bi-material sample. This analysis was limited to considering the sample behavior when exposed to the stationaiy temperature field. The energy release rate G, which is the driving force for this interfacial fracture, is changing with temperature and that variation is increasing with increase of the temperature difference between the environment and the sample. Analysis of this relation, between the G variation and temperature difference, can be used to predict the maximal temperature difference, which the two-layered sample can be subjected to, without appearance of delamination between layers. PB - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd T2 - Thermal Science T1 - Interfacial crack behavior in the stationary temperature field conditions EP - S178 SP - S169 VL - 18 DO - 10.2298/TSCI120828113D ER -
@article{ author = "Djoković, Jelena M. and Nikolić, Ružica R. and Živković, Katarina", year = "2014", abstract = "The brittle coatings, made of different materials, when subjected to elevated temperatures and in the heat exchange conditions, are susceptible to delamination. Those coatings, as well as thin films, can be used for various therm insulating deposits, e.g. in turbines of thermal power plants. Due to environmental temperature change, in layers made of materials having different thermal expansion coefficients, appear thermal stresses. In this paper driving forces causing delamination of one layer from the other are analyzed i.e. the interfacial fracture in the two-layered, bi-material sample. This analysis was limited to considering the sample behavior when exposed to the stationaiy temperature field. The energy release rate G, which is the driving force for this interfacial fracture, is changing with temperature and that variation is increasing with increase of the temperature difference between the environment and the sample. Analysis of this relation, between the G variation and temperature difference, can be used to predict the maximal temperature difference, which the two-layered sample can be subjected to, without appearance of delamination between layers.", publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd", journal = "Thermal Science", title = "Interfacial crack behavior in the stationary temperature field conditions", pages = "S178-S169", volume = "18", doi = "10.2298/TSCI120828113D" }
Djoković, J. M., Nikolić, R. R.,& Živković, K.. (2014). Interfacial crack behavior in the stationary temperature field conditions. in Thermal Science Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 18, S169-S178. https://doi.org/10.2298/TSCI120828113D
Djoković JM, Nikolić RR, Živković K. Interfacial crack behavior in the stationary temperature field conditions. in Thermal Science. 2014;18:S169-S178. doi:10.2298/TSCI120828113D .
Djoković, Jelena M., Nikolić, Ružica R., Živković, Katarina, "Interfacial crack behavior in the stationary temperature field conditions" in Thermal Science, 18 (2014):S169-S178, https://doi.org/10.2298/TSCI120828113D . .