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Review on fracture and crack propagation in weldments - A fracture mechanics perspective

  • Welding is one of the most common methods in industrial practice for joining components. Its main advantages are high speed in manufacturing combined with low costs and, usually, a high degree of flexibility, integrity and reliability. Nevertheless, welding is a highly complex metallurgical process and, therefore, weldments are susceptible to material discontinuities, flaws and residual stresses which may lead to structural failure and life time reduction. As a consequence weldments are an important field of fracture mechanics methods although its application is more complex than for homogeneous or non-welded structures. The aim of the paper is to provide an overview on the current state of fracture mechanics application to weldments. It starts by discussing the specific features which any fracture mechanics analysis of weldments has to take into account. Then, the experimental determination of fracture toughness, fatigue crack propagation and tensile properties of weldments isWelding is one of the most common methods in industrial practice for joining components. Its main advantages are high speed in manufacturing combined with low costs and, usually, a high degree of flexibility, integrity and reliability. Nevertheless, welding is a highly complex metallurgical process and, therefore, weldments are susceptible to material discontinuities, flaws and residual stresses which may lead to structural failure and life time reduction. As a consequence weldments are an important field of fracture mechanics methods although its application is more complex than for homogeneous or non-welded structures. The aim of the paper is to provide an overview on the current state of fracture mechanics application to weldments. It starts by discussing the specific features which any fracture mechanics analysis of weldments has to take into account. Then, the experimental determination of fracture toughness, fatigue crack propagation and tensile properties of weldments is addressed. Finally, the analytical determination of the crack driving force in components and structural integrity assessment approaches for weldments are presented.zeige mehrzeige weniger

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Autor*innen:Uwe Zerbst, R. A. Ainsworth, H.T. Beier, H. Pisarski, Z. L. Zhang, K. Nikbin, T. Nitschke-Pagel, S. Münstermann, P. Kucharczyk, Dietmar Klingbeil
Dokumenttyp:Zeitschriftenartikel
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Engineering fracture mechanics
Jahr der Erstveröffentlichung:2014
Verlag:Elsevier Science
Verlagsort:Kidlington
Jahrgang/Band:132
Erste Seite:200
Letzte Seite:276
Freie Schlagwörter:Fatigue crack propagation; Fracture mechanics; Fracture toughness; Residual stresses; Strength mismatch; Weldments
DOI:10.1016/j.engfracmech.2014.05.012
ISSN:0013-7944
ISSN:1873-7315
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:20.02.2016
Referierte Publikation:Ja
Datum der Eintragung als referierte Publikation:17.03.2015
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