Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Fatigue failure assessment of a short glass fibre reinforced polyamide 6.6 under mulitaxial loading

 
: Monte, M. de; Moosbrugger, E.; Bolender, K.; Quaresimin, M.

Associazione Italiana per l'Analisi delle Sollecitazioni -AIAS-:
AIAS 2006, XXXV Convegno Nazionale dell' Associazione Italiana per l'Analisi delle Sollecitazion. CD-ROM : Ancona, 13-16 Settembre 2006, Università Politecnica delle Marche
Ancona: AIAS, 2006
14 S.
Associazione Italiana per l'Analisi delle Sollecitazioni (AIAS Convegno Nazionale) <35, 2006, Ancona>
Englisch
Konferenzbeitrag
Fraunhofer LBF ()
multiaxial fatigue; Tsai-Hill failure criterion; anisotropic fatigue failure criteria; Schwingfestigkeit; fatigue strength; glass fiber reinforced polyamide; multiaxial loading

Abstract
The fatigue bahaviour of a short glass fibre reinforced polyamide 6.6 (PA66-GF35) under multiaxial loading was investigated on hollow tubular specimens in the range of fatigue lives between 102 and 107 cycles. Fatigue experiments included pure tension, pure torsion, combined tension-torsion at different stress biaxiality ratios and phase-shifting angles between the stress components. Experiments were carried out with load ratio R=0 and R=-1 at room temperature as well as at 130°C.
An extensive failure analysis was performed on the specimens to recognise the main damage mechanisms and failure modes via optical and scanning electron microscopy.
The Tsai-Hill failure criterion, modified to take into account cyclic loading, was successfully implemented for fatigue behaviour assessment, using as strength parameters those obtained from cyclic off-axis tests from a previous investigation.

: http://publica.fraunhofer.de/dokumente/N-60916.html