A comparative study between epoxy and vinyl ester CF-SMC for high volume automotive composite crash structures
| Autor: | Neil Reynolds, Jaipal Gupta, Kenneth N. Kendall, T.G. Chiciudean |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Composite number Vinyl ester Fractography 02 engineering and technology Epoxy 021001 nanoscience & nanotechnology Kinetic energy Microstructure 020303 mechanical engineering & transports 0203 mechanical engineering Energy absorption visual_art Ceramics and Composites visual_art.visual_art_medium Composite material 0210 nano-technology Civil and Structural Engineering Volume (compression) |
| Zdroj: | Composite Structures. 244:112299 |
| ISSN: | 0263-8223 |
| DOI: | 10.1016/j.compstruct.2020.112299 |
| Popis: | Epoxy- and vinyl ester-based carbon fibre reinforced sheet moulding compounds (CF-SMCs) were industrially processed and impact tested to characterise their impact energy absorption performance. Particularly, thin-walled CF-SMC components were manufactured via a high volume compression moulding process, and were subjected to both ~9 m/s and ~13 m/s dynamic impacts with kinetic energies of ~3.3 kJ and ~6.6 kJ respectively. The mass-specific energy absorption (SEA) for epoxy-based CF-SMC ranged from 50 to 60 J/g whereas the SEA for vinyl ester material ranged from 24 to 29 J/g. In addition, the effect of the manufacturing process and the resultant reinforcement architecture on the energy absorption properties was investigated. Epoxy CF-SMC components were manufactured using conventional SMC flow forming and using ‘pre-formed’ near-net shape blanks (low/zero flow condition) and their performance compared. Local microstructure and fractography analyses were conducted for each sample type to explain the observed differences in performance between the individual CF-SMC and manufacturing systems. |
| Databáze: | OpenAIRE |
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