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Breakage of the open-hole samples: (a) 10C showing hole closing by the inter-raster separation following raster breakage [25]; (b) 4C showing the raster separations with defect at the linear line that occurs before the breakage of the raster at the curvature area; (c) 4C-Oven showing the catastrophic failure in the rasters perpendicular to the load direction; (d) tape layup showing breakage perpendicular to the fibre/load direction at the middle of the hole [25].
