Comparing crack density and dissipated energy as measures for off-axis damage in composite laminates
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In: International Journal of Fatigue, Vol. 169.2023, No. April, 107486, 04.2023.
Research output: Contribution to journal › Article › Research › peer-review
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TY - JOUR
T1 - Comparing crack density and dissipated energy as measures for off-axis damage in composite laminates
AU - Drvoderic, Matthias
AU - Gfrerrer, Maria
AU - Wiener, Johannes
AU - Pinter, Gerald Gerhard
AU - Pletz, Martin
AU - Schuecker, Clara
N1 - Publisher Copyright: © 2022 The Author(s)
PY - 2023/4
Y1 - 2023/4
N2 - To investigate off-axis cracks in composite laminates and their effect on stiffness and hysteretic energy dissipation, fatigue tests were instrumented with automated crack detection to test damage onset and progression. It was found that the onset of stiffness loss correlates well with the onset of matrix cracks, but not with the dissipated energy. To study the transition between experimentally observed damage modes occurring at the micro-scale, the experimentally obtained dissipated energy was compared with Carraro’s model, which predicts this transition based on local stresses. The results show a correlation between the absolute level of dissipated energy and the micro-damage modes.
AB - To investigate off-axis cracks in composite laminates and their effect on stiffness and hysteretic energy dissipation, fatigue tests were instrumented with automated crack detection to test damage onset and progression. It was found that the onset of stiffness loss correlates well with the onset of matrix cracks, but not with the dissipated energy. To study the transition between experimentally observed damage modes occurring at the micro-scale, the experimentally obtained dissipated energy was compared with Carraro’s model, which predicts this transition based on local stresses. The results show a correlation between the absolute level of dissipated energy and the micro-damage modes.
UR - http://www.scopus.com/inward/record.url?scp=85145350967&partnerID=8YFLogxK
U2 - 10.1016/j.ijfatigue.2022.107486
DO - 10.1016/j.ijfatigue.2022.107486
M3 - Article
VL - 169.2023
JO - International Journal of Fatigue
JF - International Journal of Fatigue
SN - 0142-1123
IS - April
M1 - 107486
ER -