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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

The Role of Stitch Yarn on the Delamination Resistance in Non-crimp Fabric: Chemical and Physical Interpretation

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Shiino, Marcos Yutaka ; Pelosi, Tatiane Scarabel ; Hilario Cioffi, Maria Odila ; Donadon, Mauricio Vicente
Total Authors: 4
Document type: Journal article
Source: Journal of Materials Engineering and Performance; v. 26, n. 3, p. 978-986, MAR 2017.
Web of Science Citations: 7

In a 3D preform, the out-of-plane reinforcement is effective for decelerating or suppressing the delamination process as the non-crimp fabric does not connect the neighboring laminae effectively. Hence, the interlaminar strength of the stitched laminae is supposed to behave in the same way as a regular unidirectional composite. In order to determine whether or not the stitched yarns contribute to the interlaminar fracture toughness, this study determinated the delamination resistance of a quasi-isotropic laminate. The analysis was based on interlaminar fracture toughness (G (Ic)) and propagation energy curve in tests conducted in mode I opening with double cantilever beam specimen geometry. The results of fracture toughness as well as strain energy for propagation were compared to their fracture surface. A decrease in the propagation energy prevailed in the surface because the stitch yarn replaced the carbon fiber/epoxy interface, which has better chemical affinities, i.e., covalent bonds. (AU)

FAPESP's process: 11/01937-0 - Crack growth rate in 5HS carbon/epoxy composites manufactured by RTM: Relationship between axial loadings with pure modes of delamination I and II
Grantee:Marcos Yutaka Shiino
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 12/07646-0 - Evaluation of pressure gradient effect of RTM process on 5HS laminate by conducting DCB fatigue test
Grantee:Marcos Yutaka Shiino
Support Opportunities: Scholarships abroad - Research Internship - Doctorate