Fracture toughness of vinyl ester composites cured by microwave irradiation: preliminary results

Ku, Harry S. and Baddeley, Douglas and Snook, Chris and Chew, C. S. (2005) Fracture toughness of vinyl ester composites cured by microwave irradiation: preliminary results. Journal of Reinforced Plastics and Composites, 24 (11). pp. 1181-1202. ISSN 0731-6844


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The shrinkage of vinyl ester particulate composites has been reduced by
curing the resins under microwave conditions. The reduction in the shrinkage of the
resins by microwaves will enable the manufacture of large vinyl ester composite items
possible (Ku et al., 2002a; 2002b; 2003a; 2003b). The impact strength of the vinyl
ester composite components cured under microwave was reduced only by 1 percent
when tested by drop weight impact tests. This project is to investigate the difference
in fracture toughness between microwave cured vinyl ester particulate composites and
those cured under ambient conditions. Short bar method of fracture toughness
measurement was used to perform the tests. The results show that the difference in
the fracture toughness is minimal between the ambient cured and microwaved-cured
samples, provided the power level and duration of microwave irradiation are properly
and optimally selected.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information (displayed to public): Deposited with permission of publisher.
Depositing User: epEditor USQ
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Mechanical and Mechatronic Engineering
Date Deposited: 11 Oct 2007 00:18
Last Modified: 02 Jul 2013 22:31
Uncontrolled Keywords: fracture toughness, microwave irradiation, vinyl ester resins
Fields of Research (FoR): 09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
Identification Number or DOI: doi: 10.1177/0731684405048841

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