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Nicolas Krumenacker and Pascal Hubert Restricted air-evacuation proved to be the worse of the two selected deficient processing conditions, as it resulted in thicker flanges compared to half-vacuum loss (Figure 3E). In turn, the baseline processing condition resulted in consistently thinner flanges for all samples. This result agrees with the work conducted by Centea and Hubert on VBO-cured flat plates [16]. In turn, no clear trend was observed in the corner regions given the overlapping standard deviation ranges of the percent corner thickening data presented in Figure 3D. In fact, it may be noted that corner thickening does not seem to be significantly affected by the two selected deficient processing conditions in the case of convex corner laminates. It would be of great interest to determine if this observation holds true in the case of concave corner laminates. Only one representative specimen was selected for each of the six baseline and half-vacuum loss samples, which are of greater interest than the restricted air-evacuation processing condition. Based on Centea and Hubert’s finding for VBO-cured flat laminates [16], it is expected that greater differences in compaction, void morphology, and hence mechanical performance at the corner will exist between the baseline and half-vacuum loss processing conditions. Figure 4 – Micro-CT results: section images in the corner hoop plane (XY) and in the radial-beam axis plane (YZ) for baseline and half-vacuum loss samples. z x y YZ-plane XZ-plane XY-plane (plane of rotation for the scanning) XY UD-B XY PW-B XY 8HS-B YZ YZ YZ XY UD-H XY PW-H XY YZ YZ YZ 8HS-HPDF Image | VACUUM-BAG-ONLY COMPLEX-SHAPE PREPREG LAMINATE
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