Influence of binder float length on the out-of-plane and axial impact performance of 3D woven composites
Influence of binder float length on the out-of-plane and axial impact performance of 3D woven composites
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DOI：
10.1016/j.compositesa.2021.106459
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发表时间：
2021-05-14
影响因子：
8.7
通讯作者：
McIlhagger, Alistair
中科院分区：
文献类型：
--
作者：
Ralph, Calvin;Dahale, Monali;McIlhagger, Alistair
研究表明，改变粘结剂的浮长这一易于调节的参数，对三维编织层间碳/环氧复合材料的冲击能量吸收、抗冲击性能和损伤容限有显著影响。在不改变织机配置的情况下，通过改变织物设计来改变接结浮长。使用恒定的经纱密度编织具有一致结构的三种浮线长度（1/2、2/2和3/2）。在32 J和42 J能量下进行了面外落锤冲击，并且显示出在纬纱方向上没有显著变化的情况下，浮长的增加在经向上分别使能量吸收减少49%和32%。相反，在轴向冲击试验中，更高的浮动长度表现出更高的破碎力效率和比能量吸收。该研究还得出结论，在平面外和轴向冲击情况下，更高的浮动长度增加了损伤容限。这项工作扩展了预成型件参数的微小变化如何显著改变3D编织复合材料的面外和面内冲击性能，而不增加制造成本，时间或复杂性。
This paper shows modifying binder float-length, an easily adjustable parameter, there is significant influence on impact energy absorption, impact resistance and damage tolerance in 3D-woven layer-to-layer carbon/epoxy composites. Binder float-length was changed by modifying textile design without changing loom set-up. Three float lengths (1/2, 2/2 and 3/2) in consistent architecture were woven using constant warp density. Out-of-plane drop-weight impact was performed at 32 J&42 J energy and showed increases in float-length decreased energy absorption by 49% and 32% respectively in warp direction with no significant changes in weft. Conversely, in axial impact tests, higher float length showed higher crush force efficiency and specific energy absorption. This study has also concluded, in both out-of-plane and axial impact scenarios, higher float lengths increase damage tolerance. This work has expanded how minor changes in preform parameters can significantly change both outof-plane and in-plane impact performance of 3D-woven composites without increased manufacturing cost, time or complexity.