TY - GEN
T1 - Accelerated approaches for life-time prediction of composites under static loads
AU - Gloggnitzer, S.
AU - Guttmann, P.
AU - Pinter, G.
PY - 2020/1/1
Y1 - 2020/1/1
N2 - Composite materials in structural applications with several decades under static loads unfortunately tend to changings in the material performance over the material lifetime. In the current work, novel methods for the determination of long term strength properties of unidirectional glass fiber reinforced thermoset composites with different fiber orientations are investigated and discussed. Classic creep rupture tests with a constant static loading situation are quite simple tests with low requirements to the test equipment, however, need non-economic testing times. Accelerated approaches, especially the stress rate accelerated creep rupture test and the stepped isostress method offer potentials to reduce testing times in an acceptable prediction quality. Although the suitability of each approach could not be confirmed for all investigated laminate structures. Nevertheless, the developed stress rate accelerated creep rupture test can certainly be regarded as a trendsetting testing procedure in the development of time efficient test methods for the prediction of material life time under static loads.
AB - Composite materials in structural applications with several decades under static loads unfortunately tend to changings in the material performance over the material lifetime. In the current work, novel methods for the determination of long term strength properties of unidirectional glass fiber reinforced thermoset composites with different fiber orientations are investigated and discussed. Classic creep rupture tests with a constant static loading situation are quite simple tests with low requirements to the test equipment, however, need non-economic testing times. Accelerated approaches, especially the stress rate accelerated creep rupture test and the stepped isostress method offer potentials to reduce testing times in an acceptable prediction quality. Although the suitability of each approach could not be confirmed for all investigated laminate structures. Nevertheless, the developed stress rate accelerated creep rupture test can certainly be regarded as a trendsetting testing procedure in the development of time efficient test methods for the prediction of material life time under static loads.
KW - Creep rupture
KW - Glass fiber composites
KW - Long term mechanical properties
KW - Thermoset resin
UR - http://www.scopus.com/inward/record.url?scp=85071596193&partnerID=8YFLogxK
M3 - Conference contribution
T3 - ECCM 2018 - 18th European Conference on Composite Materials
BT - ECCM 2018 - 18th European Conference on Composite Materials
PB - Applied Mechanics Laboratory
T2 - 18th European Conference on Composite Materials, ECCM 2018
Y2 - 24 June 2018 through 28 June 2018
ER -