Bending strength of delaminated aerospace composites by Moustafa Kinawy, Richard Butler, and Giles...

Bending strength of delaminated aerospace composites

by Moustafa Kinawy, Richard Butler, and Giles W. Hunt

Philosophical Transactions AVolume 370(1965):1780-1797

April 28, 2012

Delaminated beam coordinates and variables.

Moustafa Kinawy et al. Phil. Trans. R. Soc. A 2012;370:1780-1797

Force and moment components at the delamination edge.

Four-point bending test fixture showing specimen with delamination open (loaded above snap-buckling moment).

Applied moment versus displacement for T800/M21 specimen.

Electron scanning microscopy (ESM) images of fracture surfaces for T800/M21 material.

Delamination extension versus number of cycles for T800/M21 specimens at a range of severities.

Delamination extension versus number of cycles for IM7/8552 specimens at a range of severities.

Equilibrium solutions showing analytical displacement Q1 against applied moment per unit width M for a range of imperfections Q0 (T800/M21 specimen).

Out-of-plane displacement Q1 comparison for (a) T800/M21 specimen and (b) IM7/8552 specimen.

Strain energy release rate using the thin-film and mixed-mode analyses for the delaminated, post-buckled beam: T800/M21 specimens.

Strain energy release rate using the thin-film and mixed-mode analyses for the delaminated, post-buckled beam: IM7/8552 specimens.

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