Shams, Ehsan ; Malikoutsakis, Michail ; Savaidis, Georg ; Vormwald, Michael (2014)
Notch stress and fracture mechanics based assessment of fatigue of
seam weld ends under shear loading.
In: Fatigue & Fracture Engineering Materials & Structures, (37)
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Welding processes often lead to pronounced weld termination points (start/end), which are prone to fatigue events such as crack initiation. The fatigue of weld ends under shear loading, especially in thin sheet structures, is not sufficiently explored yet. In the present investigation, the real geometry of welds was obtained by scanning the three-dimensional surface, especially of weld ends. Cryogenic breaking of the weld opened the view to the weld root geometry and especially to the critical location, where the weld root migrates to a weld toe at the weld end. In the experimental part of this research, fatigue testing of thin sheet plane and cylindrical specimens as well as large components containing weld ends was performed. Based on the data, weld end life curves have been obtained. The notch stress concept and a fracture mechanics based approach were applied for describing the results of fatigue tests providing sufficient accuracy.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2014 |
| Autor(en): | Shams, Ehsan ; Malikoutsakis, Michail ; Savaidis, Georg ; Vormwald, Michael |
| Art des Eintrags: | Bibliographie |
| Titel: | Notch stress and fracture mechanics based assessment of fatigue of seam weld ends under shear loading |
| Sprache: | Englisch |
| Publikationsjahr: | 2014 |
| Verlag: | Wiley Publishing Ltd. |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Fatigue & Fracture Engineering Materials & Structures |
| (Heft-)Nummer: | 37 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | Welding processes often lead to pronounced weld termination points (start/end), which are prone to fatigue events such as crack initiation. The fatigue of weld ends under shear loading, especially in thin sheet structures, is not sufficiently explored yet. In the present investigation, the real geometry of welds was obtained by scanning the three-dimensional surface, especially of weld ends. Cryogenic breaking of the weld opened the view to the weld root geometry and especially to the critical location, where the weld root migrates to a weld toe at the weld end. In the experimental part of this research, fatigue testing of thin sheet plane and cylindrical specimens as well as large components containing weld ends was performed. Based on the data, weld end life curves have been obtained. The notch stress concept and a fracture mechanics based approach were applied for describing the results of fatigue tests providing sufficient accuracy. |
| Freie Schlagworte: | fatigue life, notch stress concept, shear loading, stress intensity factor, weld ends |
| Fachbereich(e)/-gebiet(e): | 13 Fachbereich Bau- und Umweltingenieurwissenschaften > Institut für Stahlbau und Werkstoffmechanik > Fachgebiet Werkstoffmechanik 13 Fachbereich Bau- und Umweltingenieurwissenschaften > Institut für Stahlbau und Werkstoffmechanik 13 Fachbereich Bau- und Umweltingenieurwissenschaften |
| Hinterlegungsdatum: | 02 Jul 2014 12:02 |
| Letzte Änderung: | 05 Feb 2015 17:25 |
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