Micrographs of the fracture of vinyl ester composites cured by microwaves: pilot study

Chew, C. S. and Ku, Harry S. and Baddeley, Douglas and Snook, Chris (2005) Micrographs of the fracture of vinyl ester composites cured by microwaves: pilot study. Journal of Electromagnetic Waves and Applications, 19 (1). pp. 67-82. ISSN 0920-5071

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Abstract

Short bar method of fracture toughness measurement [1-3] was used to perform tests to find out the difference in fracture toughness between microwave cured vinyl ester particulate composites and those cured under ambient conditions. The results show that the difference in the fracture toughness is minimal [4]. This paper presents the analysis of the fracture of the samples using a Scanning Electron Microscope (SEM). The fracture toughness of vinyl ester composites varies slightly after undergoing microwave treatment; it varies with different microwave power level and duration of exposure. The microscopic results show some important features such brittle behaviour, elongation of the fracture surface. The sample with lower fracture toughness is found to have more bubbles in the composite than those samples with higher fracture toughness. Therefore, the microwave power level and exposure time appear to correlate with the fracture toughness values obtained.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Reproduced in accordance with the copyright policy of the publisher. This item is freely available at the link above.
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: micrographs, fracture toughness, vinyl ester composites, microwaves
Fields of Research (FOR2008): 09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
Identification Number or DOI: doi: 10.1163/1569393052955080
URI: http://eprints.usq.edu.au/id/eprint/288

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