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Fatigue strength of brazed components considering the influence of brazing quality, mean stresses and loading type

: Baumgartner, Jörg; Tillmann, W.; Bobzin, K.; Wojarski, L.; Öte, M.; Manka, M.; Wiesner, S.; Sievers, N.

Deutscher Verband für Schweißen und Verwandte Verfahren e.V. -DVS-:
Brazing, high temperature brazing and diffusion bonding. LÖT 2016 : Lectures and posters of the 11th international conference taking place in Aachen on 7th to 9th June 2016
Düsseldorf: DVS Media, 2016 (DVS-Berichte 325)
ISBN: 978-3-945023-64-8
International Conference on Brazing, High Temperature Brazing and Diffusion Bonding (LÖT) <11, 2016, Aachen>
Conference Paper
Fraunhofer LBF ()
fatigue strength; brazed component; brazing quality; mean stress; loading type

Safety-related brazed compounds, e.g. rails for a direct fuel injection or heat exchangers, are exposed to complex cyclic loads. These loads can lead to a fatigue of the brazed components. The fatigue behavior depends on various factors like the quality on one side and the loading (mean stresses, loading type) on the other. From an analysis of real components, peel and shear test specimens were derived and tested under load control, using constant and variable amplitude loading. A fatigue life assessment is performed in order to describe the complex in-service life of these joints.