KIT | KIT-Bibliothek | Impressum | Datenschutz

Fatigue Life of Welded High-Strength Steels under Gaussian Loads

Möller, B.; Hrabowski, J.; Wagener, R.; Ummenhofer, T.; Melz, T.

Abstract:
Within the scope of the investigation of welded high-strength steels for application in crane structures, a Gaussian-like test spectrum is derived from an analysis of recorded load time histories. In addition to stress-controlled fatigue tests under constant amplitude loading, the test spectrum is used for the experimental investigation of MAG-welded butt joints and tubular sample components under variable amplitude loading. A linear damage accumulation using Palmgren-Miner-Elementary is conservative for a damage sum of D = 0.5. Application of the theoretical damage sum Dth = 1 results in a closer approximation of the Gaßner-curve. For further improvement of this approximation, a rotation of the calculated Gaßner-curve, i.e. a variable damage sum, is suggested for both butt joints and sample components.

Open Access Logo


Volltext §
DOI: 10.5445/IR/1000052113
Originalveröffentlichung
DOI: 10.1016/j.proeng.2015.02.035
Scopus
Zitationen: 2
Coverbild
Zugehörige Institution(en) am KIT Versuchsanstalt für Stahl, Holz und Steine (VAKA)
Publikationstyp Zeitschriftenaufsatz
Jahr 2015
Sprache Englisch
Identifikator ISSN: 1877-7058
urn:nbn:de:swb:90-521137
KITopen-ID: 1000052113
Erschienen in Procedia engineering
Band 101
Seiten 293-301
Vorab online veröffentlicht am 20.03.2015
Schlagworte ow cycle fatigue; high-strength fine-grained steels; welded butt joints; tubular sample components;Gaussian load spectra; linear damage accumulation; Palmgren-Miner-Elementary
Nachgewiesen in Scopus
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
KITopen Landing Page