Interlaminar tests for marine applications. Evaluation of the influence of peel plies and fabrication delays

Type Article
Date 2005-09
Language English
Author(s) Davies PeterORCID1, Baley C2, Loaec Henri1, Grohens Y2
Affiliation(s) 1 : IFREMER, Ctr Brest, Mat & Struct Grp, F-29280 Plouzane, France.
2 : Univ Bretagne Sud, L2P, F-56321 Lorient, France.
Source Applied Composite Materials (0929-189X) (Kluwer), 2005-09 , Vol. 12 , N. 5 , P. 293-307
DOI 10.1007/s10443-005-1324-y
WOS© Times Cited 8
Keyword(s) Mode I, Woven, Peel ply, Glass/polyester, Overlamination, Interlaminar
Abstract This paper presents results from a study of the influence of surface preparation on the mechanical performance of overlaminated polyester composites. Panels of 16 woven glass plies have been prepared in two halves by hand lay-up. After the first 8 plies were laminated the surface was either protected by a peel ply or left in air. The overlamination of the second half of the composite thickness was completed after different periods and interlaminar shear, flexure and mode I fracture specimens were tested. The results enabled the influence of the delay and the surface condition to be related to mechanical performance. Surfaces protected with peel plies show very low G(Ic) propagation energy release rates. Results are compared to those from continuous lamination of the 16 ply composite. Interlaminar fracture tests are shown to be much more sensitive to overlamination conditions than the traditional short beam shear test. Results are interpreted in terms of fracture surface features.
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