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实验分析帽型加筋壁板填充芯材下方蒙皮褶皱成因

张栋梁 薛向晨 梁宪珠 湛利华 杨晓波 郑晓玲

张栋梁, 薛向晨, 梁宪珠, 等. 实验分析帽型加筋壁板填充芯材下方蒙皮褶皱成因[J]. 复合材料学报, 2020, 37(12): 3064-3070. doi: 10.13801/j.cnki.fhclxb.20200323.002
引用本文: 张栋梁, 薛向晨, 梁宪珠, 等. 实验分析帽型加筋壁板填充芯材下方蒙皮褶皱成因[J]. 复合材料学报, 2020, 37(12): 3064-3070. doi: 10.13801/j.cnki.fhclxb.20200323.002
ZHANG Dongliang, XUE Xiangchen, LIANG Xianzhu, et al. Experimental analysis of the causes of skin wrinkles below the radius filler of hat-stiffened skins[J]. Acta Materiae Compositae Sinica, 2020, 37(12): 3064-3070. doi: 10.13801/j.cnki.fhclxb.20200323.002
Citation: ZHANG Dongliang, XUE Xiangchen, LIANG Xianzhu, et al. Experimental analysis of the causes of skin wrinkles below the radius filler of hat-stiffened skins[J]. Acta Materiae Compositae Sinica, 2020, 37(12): 3064-3070. doi: 10.13801/j.cnki.fhclxb.20200323.002

实验分析帽型加筋壁板填充芯材下方蒙皮褶皱成因

doi: 10.13801/j.cnki.fhclxb.20200323.002
详细信息
    通讯作者:

    薛向晨,硕士,高级工程师,研究方向为复合材料 E-mail:c31050201@sina.com

  • 中图分类号: TB332

Experimental analysis of the causes of skin wrinkles below the radius filler of hat-stiffened skins

  • 摘要: 研究了碳纤维/环氧树脂复合材料帽型加筋壁板在长桁先固化、蒙皮未固化的共胶接工艺下,填充芯材下方蒙皮褶皱的形成过程及产生原因。测试了预浸料的树脂流变特性,由压力监测设备对填充芯材下方蒙皮内部压力进行监测获得了其内部压力的分布,采用金相显微镜对褶皱进行了表征。结果表明:在树脂流动的窗口期,当填充芯材下方蒙皮内部出现压力差时,树脂向低压区流动并聚集,导致褶皱产生。

     

  • 图  1  帽型加筋壁板及填充芯材局部示意图

    Figure  1.  Schematic diagram of hat-stiffened skins and radius filler

    图  2  压力传感器结构

    Figure  2.  Pressure sensor structure

    图  3  填充芯材下方蒙皮内部的测量点位置示意图

    Figure  3.  Schematic diagram of position of the measuring point inside the skin under the radius filler

    图  4  填充芯材下方蒙皮褶皱的评价方法

    Figure  4.  Evaluation method of skin wrinkles under the radius filler

    t—Thickness of skin; L—Length of wrinkles; D—Distance of wrinkles

    图  5  选用预浸料的环氧树脂的流变曲线

    Figure  5.  Rheological curves of epoxy resin of the selected prepreg

    图  6  截面积偏差δS分别为0%、20%和50%的填充芯材下方蒙皮内部的压强

    Figure  6.  Pressure inside the skin under the radius filler with cross-sectional deviation δS of 0%, 20% and 50%

    图  7  蒙皮平整区和蒙皮褶皱区位置

    Figure  7.  Skin flat and wrinkle positions

    图  8  填充芯材截面积偏差为50%实验组不同位置的金相图对比

    Figure  8.  Comparison of metallographic diagrams in different positions of the experimental group with the 50% radius filler cross-sectional deviation

    图  9  不同位置的层间树脂相对厚度

    Figure  9.  Relative thickness of resin between the layers in different positions

    图  10  填充芯材下方蒙皮褶皱的形成过程示意图

    Figure  10.  Formation process of skin wrinkles under the radius filler

    表  1  填充芯材下方蒙皮内部的压强对比

    Table  1.   Comparison of pressure inside the skin under the radius filler

    Radius filler cross-
    sectional deviation
    Average pressure/kPaPressure
    difference/kPa
    1#2#3#4#
    0% 688.31 684.74 670.53 672.42 17.78
    20% 699.29 679.99 685.31 670.26 29.04
    50% 689.08 661.97 665.19 656.17 32.91
    下载: 导出CSV

    表  2  蒙皮平整区和褶皱区厚度对比

    Table  2.   Comparison of skin thickness in flat and wrinkle positions

    Radius filler cross-sectional deviationAreaSkin thickness/mmTheoretical thickness/mm
    0% Flat 8.04 8.22
    Wrinkle 8.96 8.22
    20% Flat 8.03 8.22
    Wrinkle 9.16 8.22
    50% Flat 8.02 8.22
    Wrinkle 9.42 8.22
    下载: 导出CSV
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出版历程
  • 收稿日期:  2020-02-04
  • 录用日期:  2020-03-07
  • 网络出版日期:  2020-03-23
  • 刊出日期:  2020-12-15

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