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风力机叶片材料的选择与评价(图表)

2014-07-29 来源:中国风电材料设备网作者:杨萍 浏览数:2436


  通过记录树脂流动过程中流动前锋位置x 与时间t,并对x2~t 作图,通过线性拟合由直线斜率k 来计算出渗透率。其示意图如图1 所示。

  (2)二维径向。二维径向渗透率是指树脂从增强材料中心一点注入,在恒定流速或恒定压力下在面内沿径向流动(不考虑树脂沿厚度方向的流动),通过记录树脂径向流动前锋与时间的关系可同时得到平面内两个主方向的渗透率,具体如下:  
  各向同性材料计算公式:

  各向异性材料计算公式:

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