It can be seen that the size of left area is represented by the feature distance D1 and D2, combining the Figure 8 b with Figure 9 , the measuring results show that D1 and D2 of the nine helmets become larger on an average of 1.961 mm and 0.525 mm respectively, which indicate that the size of the nine helmets’ left areas has an increasing trend.
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Process-Induced Distortions Characterization of MBWK Fabric Reinforced Composite Helmet Shell.
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