Journal article · Ahead of Print article
A combined experimental/numerical investigation on hygrothermal aging of fiber-reinforced composites
Delft University of Technology1
Knowledge Centre Wind turbine Materials and Constructions2
Department of Wind Energy, Technical University of Denmark3
Composites Mechanics and Materials Mechanics, Department of Wind Energy, Technical University of Denmark4
Villum Center for Advanced Structural and Material Testing, Centers, Technical University of Denmark5
This work investigates hygrothermal aging degradation of unidirectional glass/epoxy composite specimens through a combination of experiments and numerical modeling. Aging is performed through immersion in demineralized water. Interlaminar shear testes are performed after multiple conditioning times and after single immersion/redrying cycles.
Degradation of the fiber-matrix interface is estimated using single-fiber fragmentation tests and reverse modeling combining analytical and numerical models. A fractographic analysis of specimens aged at 50°C and 65°C is performed through X-ray computed tomography. The aging process is modeled using a numerical framework combining a diffusion analysis with a concurrent multiscale model with embedded hyper-reduced micromodels.
At the microscale, a pressure-dependent viscoelastic/viscoplastic model with damage is used for the resin and fiber-matrix debonding is modeled with a cohesive-zone model including samples redried after havingfriction. A comparison between numerical and experimental results is performed.
| Language: | English |
|---|---|
| Year: | 2018 |
| Pages: | 407-419 |
| ISSN: | 18737285 and 09977538 |
| Types: | Journal article and Ahead of Print article |
| DOI: | 10.1016/j.euromechsol.2018.10.003 |
| ORCIDs: | 0000-0002-6691-1259 , 0000-0001-9825-0232 and Mikkelsen, Lars Pilgaard |
