Strain Rate Effects on the Energy Absorption of Rapidly Manufactured Composite Tubes
| Autor: | Donald L. Erdman, Aaron M Brighton, Bronwyn Fox, Mark Forrest, J. Michael Starbuck |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Polypropylene
Materials science Mechanical Engineering Glass fiber Composite number chemistry.chemical_element Epoxy Strain rate chemistry.chemical_compound chemistry Mechanics of Materials Energy absorption Aluminium visual_art Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Specific energy Composite material |
| Zdroj: | Journal of Composite Materials. 43:2183-2200 |
| ISSN: | 1530-793X 0021-9983 |
| DOI: | 10.1177/0021998309344646 |
| Popis: | Quasi-static and intermediate rate axial crush tests were conducted on tubular specimens of Carbon/Epoxy (Toray T700/G83C) and Glass/Polypropylene (Twintex). The quasi-static tests were conducted at 10 mm/min (1.67x10-4 m/s); five different crush initiators were used. Tests at intermediate rates were performed at speeds of 0.25 m/s, 0.5 m/s, 0.75 m/s 1m/s, 2 m/s and 4 m/s. Quasi-static tests of tubular specimens showed high specific energy absorption (SEA) values with 86 kJ/kg for Carbon/Epoxy specimens. The specific energy absorption of the Glass/Polypropylene specimens was measured to be 29 kJ/kg. Results from the intermediate test rates showed that while a decrease in specific energy absorbed was observed as speeds increased, values did not fall below 55kj/kg for carbon specimens or 35 kJ/kg for the Glass/Polypropylene specimens. When compared with steel and aluminium, specific energy absorption values of 15 kJ/kg and 30 kJ/kg respectively, the benefits of using composite materials in crash structures are apparent. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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