79
Views
7
CrossRef citations to date
0
Altmetric
Papers

Impact damage area and interlaminar toughness of modified FRP laminates

Pages 77-88 | Published online: 02 Apr 2012
 

Abstract

Glass fibre reinforced epoxy laminates are improved to enhance their impact tolerance capabilities by modifying the epoxy resin with the addition of CTBN 1300X8 and triphenylphosphine under a controlled atmosphere of inert nitrogen gas. When impacted by a steel projectile, the damage area of a modified laminate is significantly smaller (35-55%) than that of an unmodified laminate for the same impact energy level. The interlaminar energy release rate in Mode I (G Ic) is increased by 41% as a result of the modification while the interlaminar energy release rate in Mode II (G IIc) is enhanced by 47%. No significant adverse effects were found on the modulus or ultimate tensile strength. The modification of epoxy causes precipitation and separation of discrete rubber particles during curing of the epoxy which also enhances the interlaminar toughness and impact tolerance.

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.