Strain rate effects on the energy absorption of rapidly manufactured composite tubes

Brighton, Aaron, Luedtke, Ben, Brosius, Dale, Starbuck, Mike, Erdman, Donald and Fox, Bronwyn 2007, Strain rate effects on the energy absorption of rapidly manufactured composite tubes, in ACCE 2007 7th Annual Automotive Composites Conference & Exhibition, SPE Automotive & Composites Divisions, Troy, Mi., pp. 1-13.

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Title Strain rate effects on the energy absorption of rapidly manufactured composite tubes
Author(s) Brighton, Aaron
Luedtke, Ben
Brosius, Dale
Starbuck, Mike
Erdman, Donald
Fox, Bronwyn
Conference name ACCE 2007 (7th : 2007 : Troy, Michigan)
Conference location Troy, Michigan
Conference dates 11-13 September 2007
Title of proceedings ACCE 2007 7th Annual Automotive Composites Conference & Exhibition
Editor(s) Brosius, Dale
Publication date 2007
Conference series Automotive Composite Conference and Exhibition
Start page 1
End page 13
Publisher SPE Automotive & Composites Divisions
Place of publication Troy, Mi.
Summary As a result of recent increases in fuel prices and the growing number of accident fatalities, the two major concerns of the automotive industry and their customers are now occupant safety and fuel economy {1, 2]. Increasing the amount of energy and optimizing the manner in which energy is absorbed within vehicle crush zones can improve occupant survivability in the event of a crash, while fuel economy is improved through a reduction in weight.  Axial crush tests were conducted on tubular specimens of Carbon/Epoxy (Toray T700/G83C) and Glass/Polypropylene (Twintex). This paper presents results from the tests conducted at quasi-static rates at Deakin Unniversity, Victoria Australia, and intermediate rate tests performed at the Oak Ridge National Laboratory, Tennessee  USA.   The quasi-static tests were conducted at 10mm/min (1.67x10-4m/s) using 5 different forms of initiation. Tests at intermediate rates were performed at speeds of 0.25m/s, 0.5m/s, 0.75m/s 1m/s, 2m/s and 4m/s. Quasi-static tests of tubular specimens showed high specific energy absorption (SEA) values with 86 kJ/kg for Carbon/Epoxy specimens. The SEA of the Glass/Polypropylene specimens was measured to be 29 kJ/kg. Results from the intermediate test rates showed that SEA values did not fall below 55kJ/kg for carbon specimens or 35kJ/kg for the Glass/Polypropylene specimens. When compared with typical steel and aluminium, SEA values of 15 kJ/kg and 30kJ/kg respectively, the benefits of using composite materials in crash structures is apparent.                                                                     
Language eng
Field of Research 091202 Composite and Hybrid Materials
HERDC Research category E1 Full written paper - refereed
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Document type: Conference Paper
Collection: Centre for Material and Fibre Innovation
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