Bosch, Alexander ; Vormwald, Michael ; Schackert, Sophie ; Schweizer, Christoph (2018)
Fatigue life assessment of welded joints made of the stainless steel X6CrNiNb18‐10 for thermomechanical and variable amplitude loading.
In: Materials science and engineering technology, 49 (3)
doi: 10.1002/mawe.201700196
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The aim of the presented 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 1.4550. 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, and mean stresses. For the evaluation, different estimation concepts based on Palmgren‐Miner's classic linear damage accumulation rule are used: solely calculated by strain ranges, damage parameter established by Smith, Watson and Topper, and a damage parameter based on the cyclic effective J‐integral. The differences in the concepts are highlighted and used for further considerations on how to improve the lifetime prediction models.
| Typ des Eintrags: | Artikel | ||||
|---|---|---|---|---|---|
| Erschienen: | 2018 | ||||
| Autor(en): | Bosch, Alexander ; Vormwald, Michael ; Schackert, Sophie ; Schweizer, Christoph | ||||
| Art des Eintrags: | Bibliographie | ||||
| Titel: | Fatigue life assessment of welded joints made of the stainless steel X6CrNiNb18‐10 for thermomechanical and variable amplitude loading | ||||
| Sprache: | Englisch | ||||
| Publikationsjahr: | 27 März 2018 | ||||
| Verlag: | WILEY-VCH Verlag | ||||
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Materials science and engineering technology | ||||
| Jahrgang/Volume einer Zeitschrift: | 49 | ||||
| (Heft-)Nummer: | 3 | ||||
| DOI: | 10.1002/mawe.201700196 | ||||
| URL / URN: | https://onlinelibrary.wiley.com/doi/abs/10.1002/mawe.2017001... | ||||
| Kurzbeschreibung (Abstract): | The aim of the presented 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 1.4550. 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, and mean stresses. For the evaluation, different estimation concepts based on Palmgren‐Miner's classic linear damage accumulation rule are used: solely calculated by strain ranges, damage parameter established by Smith, Watson and Topper, and a damage parameter based on the cyclic effective J‐integral. The differences in the concepts are highlighted and used for further considerations on how to improve the lifetime prediction models. |
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| Freie Schlagworte: | Variable amplitude loading, thermomechanical fatigue, weld seams, damage calculation, short crack growth, low cycle fatigue | ||||
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| 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 |
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| Hinterlegungsdatum: | 02 Mai 2018 13:45 | ||||
| Letzte Änderung: | 02 Mai 2018 13:47 | ||||
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