Laser thermal shock experiments - performance and evaluation on the basis of advanced ceramics
- The thermal shock behaviour in air and vacuum of three different advanced ceramics is investigated by introducing a new testing method. This thermal shock testing system permits the reproducible setting of defined temperature profiles in thin disks. In order to perform heating - up thermal shock experiments under reproducible conditions and to measure the transient temperature fields, a laser beam is directed spirally across the surface of the specimen. In this process, the specimen is heated up faster than the temperature gradient is compensated by thermal conductivity. Resulting temperature fields were recorded space and time resolved. Based on the knowledge of the local temperature distribution at the moment of failure, the critical fracture stress can be calculated. The scatter of thermal shock strength is quantitatively determined for the tested ceramics by using a improved statistical method.
Autor*innen: | Robert Pulz, Birgit RehmerORCiD |
---|---|
Dokumenttyp: | Beitrag zu einem Tagungsband |
Veröffentlichungsform: | Verlagsliteratur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | Advanced Engineering Ceramics and Composites |
Jahr der Erstveröffentlichung: | 2011 |
Herausgeber (Institution): | Institute of Physics Publishing Ltd. (IOP), UK |
Ausgabe/Heft: | Symposium 14 |
Erste Seite: | 202019, 1 |
Letzte Seite: | 4 |
Freie Schlagwörter: | Environmental media; Thermal shock; Weibull statistics |
DOI: | 10.1088/1757-899X/18/20/202019 |
ISSN: | 1757-899X |
Bemerkung: | Serientitel: IOP Conference Series: Materials Science and Engineering – Series title: IOP Conference Series: Materials Science and Engineering |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 20.02.2016 |
Referierte Publikation: | Nein |