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Originalveröffentlichung
DOI: 10.1016/j.proeng.2015.02.035
Scopus
Zitationen: 2

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.


Zugehörige Institution(en) am KIT Versuchsanstalt für Stahl, Holz und Steine (VAKA)
Publikationstyp Zeitschriftenaufsatz
Jahr 2015
Sprache Englisch
Identifikator ISSN: 1877-7058
URN: 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
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