Thermographic investigation of the anisotropic behaviour of additively manufactured AISI316 steel using DED-Arc
- Additive manufacturing is one of the most promising techniques for industrial production and maintenance, but the specifics of the layered structure must be considered. The Direct Energy Deposition-Arc process enables relatively high deposition rates, which is favourable for larger components. For this study, specimens with different orientations were prepared from one AISI316 steel block – parallel and orthogonal to the deposition plane. Quasistatic tensile loading tests were carried out, monitored by an infrared camera. The obtained surface temperature maps revealed structural differences between both orientations. The consideration of surface temperature transients yields more details about the behaviour of the material under tensile loading than the conventional stress-strain-curve. These preliminary investigations were supplemented by thermographic fatigue trials. Although the anisotropy was also observed during fatigue loading the fatigue behaviour in general was the same, atAdditive manufacturing is one of the most promising techniques for industrial production and maintenance, but the specifics of the layered structure must be considered. The Direct Energy Deposition-Arc process enables relatively high deposition rates, which is favourable for larger components. For this study, specimens with different orientations were prepared from one AISI316 steel block – parallel and orthogonal to the deposition plane. Quasistatic tensile loading tests were carried out, monitored by an infrared camera. The obtained surface temperature maps revealed structural differences between both orientations. The consideration of surface temperature transients yields more details about the behaviour of the material under tensile loading than the conventional stress-strain-curve. These preliminary investigations were supplemented by thermographic fatigue trials. Although the anisotropy was also observed during fatigue loading the fatigue behaviour in general was the same, at least for both inspected specimens. The presented results demonstrate the abilities and the potential of thermographic techniques for tensile tests.…


| Autor*innen: | Rainer Krankenhagen, Somsubhro Chaudhuri, Andreas Pittner, Rene Winterkorn, Rosa de Finis, Davide Palumbo, Umberto Galietti |
|---|---|
| Dokumenttyp: | Beitrag zu einem Tagungsband |
| Veröffentlichungsform: | Graue Literatur |
| Sprache: | Englisch |
| Titel des übergeordneten Werkes (Englisch): | Conference proceedings of th 17th Quantitative Infrared Thermography Conference |
| Jahr der Erstveröffentlichung: | 2026 |
| Organisationseinheit der BAM: | 8 Zerstörungsfreie Prüfung |
| 8 Zerstörungsfreie Prüfung / 8.3 Thermografische Verfahren | |
| 9 Komponentensicherheit | |
| 9 Komponentensicherheit / 9.3 Schweißtechnische Fertigungsverfahren | |
| Herausgeber (Institution): | QIRT Scientific comittee |
| Aufsatznummer: | 029 |
| Erste Seite: | 1 |
| Letzte Seite: | 8 |
| DDC-Klassifikation: | Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurwissenschaften und zugeordnete Tätigkeiten |
| Freie Schlagwörter: | Thermoelastic effect; Wire-arc-additive manufacturing; fatigue testing; thermal stress analysis |
| Themenfelder/Aktivitätsfelder der BAM: | Material |
| Material / Additive Fertigung | |
| Veranstaltung: | 17th Quantitative Infrared Thermography Conference |
| Veranstaltungsort: | Bologna, Italy |
| Beginndatum der Veranstaltung: | 07.07.2025 |
| Enddatum der Veranstaltung: | 10.07.2025 |
| DOI: | 10.21611/qirt-2024-029 |
| Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
| Datum der Freischaltung: | 19.01.2026 |
| Referierte Publikation: | Nein |

