Abstract Using developed experimental and analytical methods for in-plane shear characterization of quasi-statically loaded polyethylene (PE) laminates, this work evaluates the effect of the in-plane shear behavior has on ballistic performance (limit velocity and back face deflection). As in-plane shear is a matrix-dominated phenomena and processing pressure is known to noticeably influence the shear properties of polyethylene composites, the matrix materials and processing conditions are varied in order to probe an array of configurations. The in-plane shear properties are assessed through quasi-static tensile testing of laminates with [±45°] orientation and the ballistic performance is evaluated using a laboratory gas gun and high speed DIC. It is found that the in-plane shear strain for the more compliant HB 212 material is twice that of the HB 210 material during a ballistic event, which corresponds to the 5% increase in limit velocity of HB 212 over HB 210. The source of the shear deformation in PE materials is fiber rotation as evidenced by the quasi static tests.

中文翻译：

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面内剪切性能对聚乙烯复合材料弹道性能的影响

摘要 使用已开发的实验和分析方法对准静态负载聚乙烯 (PE) 层压板进行面内剪切表征，这项工作评估了面内剪切行为对弹道性能（极限速度和背面挠度）的影响。由于面内剪切是基质主导的现象，并且已知加工压力显着影响聚乙烯复合材料的剪切性能，因此改变基质材料和加工条件以探测一系列配置。通过对具有 [±45°] 取向的层压板进行准静态拉伸测试来评估面内剪切性能，并使用实验室气枪和高速 DIC 评估弹道性能。