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Investigation of strain history in fast and conventional curing epoxy matrix composites by FBGs
- Source :
- Composites Science and Technology. 159:18-24
- Publication Year :
- 2018
- Publisher :
- Elsevier BV, 2018.
-
Abstract
- A comprehensive understanding of strain history in resin matrix composite, which is caused by variability of thermo-mechanical properties of the resin during composite processing, is essential to allow better design and control of properties of the resin matrix composite. In this paper, to know strain history of fast curing epoxy matrix composite and differences of strain history between fast and conventional curing epoxy matrix composites well, temperature and strain history at different locations in ten-ply unidirectional carbon-fiber fabrics reinforced the fast and conventional curing epoxy matrix composite laminates manufactured by wet lay-up method were measured by fiber Bragg grating (FBG) sensors. Results shown that the peak temperature due to curing exothermal reaction was 133.7 °C in both the 1st ply and the 5th ply in the fast curing composite when cure temperature profile settled at 80 °C, which was 27.4 °C higher than that in the conventional curing composite. Cure residual strain in the 1st ply and the 5th ply in the fast curing composite were −5183.3 μe and −4074.7 μe, respectively; while they were −2975.9 μe and −2660.8 μe in the conventional curing composite. The related properties of rheology and cure kinetics of the epoxy resin were thus given in advance.
- Subjects :
- Materials science
Composite number
General Engineering
02 engineering and technology
Epoxy
Epoxy matrix
Composite laminates
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
Rheology
Fiber Bragg grating
visual_art
Residual strain
Ceramics and Composites
visual_art.visual_art_medium
Composite material
0210 nano-technology
Curing (chemistry)
Subjects
Details
- ISSN :
- 02663538
- Volume :
- 159
- Database :
- OpenAIRE
- Journal :
- Composites Science and Technology
- Accession number :
- edsair.doi...........c221ddef902a0dd4829c14f76a4b7399