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…the laminate level tests carried out. The layup angles 0º,
45º, -45º, and 90º refer to the orientation of the warp/longitudinal fiber direction. The
laminate stacking sequences in this program are not specific to any design. Therefore,
careful consideration should be given to the validity of properties derived from this
program based on the design…
https://www.wichita.edu/industry_and_defense/NIAR/Research/tencate-tc250/12k-HTS40-2.pdf