自动铺丝末端缺陷角度对层合板拉伸性能的影响
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1.天津市现代机电装备技术重点实验室,天津 300387;2.天津工业大学机械工程学院,天津 300387

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天津市应用基础与前沿技术研究计划重点项目(11JCZDJC23000)


Influence of Defect Angle at the End of Tows on the Tensile Properties of Laminates by Automated Placement
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1.Advanced Mechatronics Equipment Technology Tianjin Area Major Laboratory,Tianjin 300387;2.School of Mechanical Engineering,Tianjin Polytechnic University,Tianjin 300387

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    摘要:

    自动纤维铺放(AFP)工艺能够有效制造大型复合材料构件,但在铺放过程中因为丝束末端等断面而出现不同角度内嵌缺陷。为解决相关问题,按照[(90°/0°)5/90°]和[(0°/90°)5/0°]的铺层顺序,在0°和90°铺层内分别设置不同丝束末端角度的孔隙缺陷或重叠缺陷。结果表明:不同角度纤维铺层内嵌不同角度缺陷时,导致复合材料构件差异明显。在90°纤维铺层方向上,内嵌90°孔隙缺陷和90°重叠缺陷时,试件拉伸强度最高,拉伸强度比分别为90.89%和90.11%。在0°纤维铺层方向上,内嵌±30°孔隙缺陷和30°重叠缺陷时,试件拉伸强度最高,拉伸强度比分别为28.48%和50.71%。

    Abstract:

    Automatic fiber placement (AFP) technology could manufacture large composite components effectively,but there are different angle embedded defects due to the same cross-section at the end of the tow in the process of placement.In order to solve the related problems,according to the laying sequence of [(90°/0°)5/90°] and [(0°/90°)5/0°],the gap defects or overlapping defects with different end angles of the tow were set in the 0° and 90° laying sequence respectively.The experimental results show that the difference of the composite components is obvious when the defects are embedded in different angles.In the direction of 90° fiber layer,when 90° void defect and 90° overlapping defect are embedded, the tensile strength of the specimen is the highest,and the tensile strength ratio is 90.89% and 90.11%,respectively.In the direction of 0° fiber layer,the tensile strength of the specimen is the highest when embedded with ± 30° gap defect and 30° overlapping defect,and the tensile strength ratio is 28.48% and 50.71% respectively.

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丰亮宽,杨涛,杜宇,李韦清,原文慧.自动铺丝末端缺陷角度对层合板拉伸性能的影响[J].宇航材料工艺,2020,50(3):62-68.

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  • 收稿日期:2019-06-05
  • 最后修改日期:2019-08-14
  • 录用日期:2019-09-06
  • 在线发布日期: 2020-06-17