Bosch, Alexander ; Schackert, Sophie ; Schweizer, Christoph ; Vormwald, Michael (2017)
Assessment of welded joints under thermomechanical and variable amplitude loading.
Konferenzveröffentlichung, Bibliographie
Kurzbeschreibung (Abstract)
The aim of the current work is to develop improved concepts for the prediction of fatigue lifetime under variable amplitude loading including plastic deformation and thermomechanical fatigue of welded joints made of the austenitic stainless steel X6CrNiNb18-10. Local strain amplitudes are located in the regime of low cycle fatigue which is dominated by short crack growth. This can best be described by nonlinear fracture mechanics. To develop a fracture mechanics based lifetime model, different experiment types are carried out to estimate the influence of loading history, thermal cycling und mean stresses. For the evaluation different estimation concepts are used: Palmgren-Miner’s classic linear damage accumulation rule as well as the damage parameter established by Smith, Watson and Topper and a damage parameter based on the cyclic effective J-Integral. The differences in the concepts will be highlighted and used for further considerations of how to advance the lifetime prediction model.
The presented work gives an overview of the preliminary results of the current work on the AiF research project 18842 N ‘Extended damage concepts for thermomechanical loading under variable amplitudes and plastic deformation’.
| Typ des Eintrags: | Konferenzveröffentlichung |
|---|---|
| Erschienen: | 2017 |
| Autor(en): | Bosch, Alexander ; Schackert, Sophie ; Schweizer, Christoph ; Vormwald, Michael |
| Art des Eintrags: | Bibliographie |
| Titel: | Assessment of welded joints under thermomechanical and variable amplitude loading |
| Sprache: | Englisch |
| Publikationsjahr: | 22 Mai 2017 |
| Ort: | Darmstadt |
| Verlag: | Eigenverlag: Technische Universität Darmstadt - Institut für Stahlbau und Werkstoffmechanik |
| Buchtitel: | Proceedings of the 5th Symposium on Structural Durability in Darmstadt |
| Kurzbeschreibung (Abstract): | The aim of the current work is to develop improved concepts for the prediction of fatigue lifetime under variable amplitude loading including plastic deformation and thermomechanical fatigue of welded joints made of the austenitic stainless steel X6CrNiNb18-10. Local strain amplitudes are located in the regime of low cycle fatigue which is dominated by short crack growth. This can best be described by nonlinear fracture mechanics. To develop a fracture mechanics based lifetime model, different experiment types are carried out to estimate the influence of loading history, thermal cycling und mean stresses. For the evaluation different estimation concepts are used: Palmgren-Miner’s classic linear damage accumulation rule as well as the damage parameter established by Smith, Watson and Topper and a damage parameter based on the cyclic effective J-Integral. The differences in the concepts will be highlighted and used for further considerations of how to advance the lifetime prediction model. The presented work gives an overview of the preliminary results of the current work on the AiF research project 18842 N ‘Extended damage concepts for thermomechanical loading under variable amplitudes and plastic deformation’. |
| Freie Schlagworte: | Variable amplitude loading, thermomechanical fatigue, weld seams, damage calculation, low cycle fatigue |
| Fachbereich(e)/-gebiet(e): | 13 Fachbereich Bau- und Umweltingenieurwissenschaften > Institut für Stahlbau und Werkstoffmechanik 13 Fachbereich Bau- und Umweltingenieurwissenschaften > Institut für Stahlbau und Werkstoffmechanik > Fachgebiet Werkstoffmechanik 13 Fachbereich Bau- und Umweltingenieurwissenschaften |
| Hinterlegungsdatum: | 22 Mai 2017 14:28 |
| Letzte Änderung: | 31 Mai 2017 15:03 |
| PPN: | |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
 |
Frage zum Eintrag |
Optionen (nur für Redakteure)
 |
Redaktionelle Details anzeigen |
Drucken
Impressum