Zitieren Sie bitte immer diesen URN: urn:nbn:de:kobv:b43-454441
Numerical study of laser line thermography for crack detection at high temperature
- The detection of cracks before the failure is highly significant when it comes to safety-relevant structures. Crack detection in metallic samples at high surface temperature is one of the challenging situation in manufacturing industries. Laser thermography has already proved its detection capability of surface cracks in metallic samples at room temperature. In this work a continuous wave (CW) laser use to generate a laser, which is using to scan the metal surface with notch. The corresponding heat distribution on the surface monitored using infrared thermal (IR) camera. A simplified 3D model for laser thermography is developed and validated with experimental results. A dedicated image processing algorithm developed to improve the detectability of the cracks. To understand the dependency of surface temperature, laser power, laser scanning speed etc. in defect detection, we carried out parametric studies with our validated model. Here we report the capability of laser thermography inThe detection of cracks before the failure is highly significant when it comes to safety-relevant structures. Crack detection in metallic samples at high surface temperature is one of the challenging situation in manufacturing industries. Laser thermography has already proved its detection capability of surface cracks in metallic samples at room temperature. In this work a continuous wave (CW) laser use to generate a laser, which is using to scan the metal surface with notch. The corresponding heat distribution on the surface monitored using infrared thermal (IR) camera. A simplified 3D model for laser thermography is developed and validated with experimental results. A dedicated image processing algorithm developed to improve the detectability of the cracks. To understand the dependency of surface temperature, laser power, laser scanning speed etc. in defect detection, we carried out parametric studies with our validated model. Here we report the capability of laser thermography in crack detection at elevated temperature.…
Autor*innen: | N. Puthiyaveettil |
---|---|
Koautor*innen: | Mathias ZieglerORCiD, Philipp Myrach, Sreedhar Unnikrishnakurup, C. V. Krishnamurthy, K. Balasubramaniam |
Dokumenttyp: | Vortrag |
Veröffentlichungsform: | Präsentation |
Sprache: | Englisch |
Jahr der Erstveröffentlichung: | 2018 |
Organisationseinheit der BAM: | 8 Zerstörungsfreie Prüfung |
8 Zerstörungsfreie Prüfung / 8.0 Abteilungsleitung und andere | |
Veröffentlichende Institution: | Bundesanstalt für Materialforschung und -prüfung (BAM) |
DDC-Klassifikation: | Naturwissenschaften und Mathematik / Chemie / Analytische Chemie |
Freie Schlagwörter: | Cracks; Laser Thermography; Thermography |
Themenfelder/Aktivitätsfelder der BAM: | Chemie und Prozesstechnik |
Veranstaltung: | Conference QIRT 2018 |
Veranstaltungsort: | Berlin, Germany |
Beginndatum der Veranstaltung: | 25.06.2018 |
Enddatum der Veranstaltung: | 29.06.2018 |
DOI: | 10.21611/qirt.2018.076 |
URN: | urn:nbn:de:kobv:b43-454441 |
Verfügbarkeit des Dokuments: | Datei für die Öffentlichkeit verfügbar ("Open Access") |
Lizenz (Deutsch): | Creative Commons - CC BY-ND - Namensnennung - Keine Bearbeitungen 4.0 International |
Datum der Freischaltung: | 12.07.2018 |
Referierte Publikation: | Nein |
Eingeladener Vortrag: | Nein |
Schriftenreihen ohne Nummerierung: | BAM Präsentationen |