Fatigue Behaviour of Filled Polypropylene
Research output: Thesis › Master's Thesis
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2009. 92 p.
Research output: Thesis › Master's Thesis
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TY - THES
T1 - Fatigue Behaviour of Filled Polypropylene
AU - Grinschgl, Markus
N1 - embargoed until null
PY - 2009
Y1 - 2009
N2 - This work is about the influence of filler type (talc, glass spheres, thermoplastic elastomer (TPO)) and filler content on the fatigue behaviour of filled polypropylene (PP). The tests were run at room temperature under stress controlled tension-tension conditions on injection moulded specimens. Among the materials with the strengthening particles no significant difference could be found in the Wöhler-diagrams. In isocyclic stress-strain diagrams (comparable to isochronous stress-strain diagrams that are used for creep characterisation) and also in the dependence of the dynamic secant modulus (characterizes creep and damage) and the pure dynamic modulus (characterizes damage only) significant differences could be found. Contrary to the types with the strengthening particles (brittle fracture), the pure PP and the PP filled with TPO showed ductile fracture in the investigated load range.
AB - This work is about the influence of filler type (talc, glass spheres, thermoplastic elastomer (TPO)) and filler content on the fatigue behaviour of filled polypropylene (PP). The tests were run at room temperature under stress controlled tension-tension conditions on injection moulded specimens. Among the materials with the strengthening particles no significant difference could be found in the Wöhler-diagrams. In isocyclic stress-strain diagrams (comparable to isochronous stress-strain diagrams that are used for creep characterisation) and also in the dependence of the dynamic secant modulus (characterizes creep and damage) and the pure dynamic modulus (characterizes damage only) significant differences could be found. Contrary to the types with the strengthening particles (brittle fracture), the pure PP and the PP filled with TPO showed ductile fracture in the investigated load range.
KW - fatigue polypropylen composites isocyclic stress-strain diagram
KW - Ermüdung Polypropylen Composites Isocyclisches Spannungs-Dehnungs-Diagramm
M3 - Master's Thesis
ER -
