Mode I Interlaminar Fracture of Composite Laminates Incorporating with Ultrathin Fibrous Sheets
Mode I Interlaminar Fracture of Composite Laminates Incorporating with Ultrathin Fibrous Sheets
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DOI：
10.1177/0731684407086504
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发表时间：
2008-04
影响因子：
3.1
通讯作者：
L. Liu;Y. Liang;G. Y. Xu;H.S. Zhang;Z. Huang
中科院分区：
文献类型：
--
作者：
L. Liu;Y. Liang;G. Y. Xu;H.S. Zhang;Z. Huang
本文研究了在层合界面上放置超薄纤维片对玻璃/环氧复合材料层合板I型断裂的影响。采用静电纺丝法制备了环氧609聚合物溶液，并将其掺入不同厚度层压板的中间界面。采用双悬臂梁（DCB）试样对层合板的I型层间断裂行为进行了表征。采用扫描电子显微镜（SEM）对试样的断裂特征进行了分析。结果表明，合理厚度的UFS对层合板的I型脱层抗力没有影响。为了进一步研究薄片对断裂韧性的影响，在层合板的不同界面上插入了一些厚度较薄的ufs。测试数据也表明，虽然薄片的总和很厚，但对I型分层阻力没有显着影响。断裂试样分析表明，当掺入板材较薄时，未观察到明显的分层现象。
Attempts have been made to investigate the effect of ultrathin fibrous sheets (UFSs) arranged on the ply interface on mode I interlaminar fracture of a glass/epoxy composite laminate. The UFSs were obtained by electrospinning of epoxy 609 polymer solution and then incorporated into the middle interface of the laminate with various thicknesses. Mode I interlaminar fracture behaviors of the resulting laminates were characterized using double cantilever beam (DCB) specimens. Scanning electron microscope (SEM) was applied to analyze the fracture characteristics of the tested specimens. Results have shown that the UFS with a reasonable thickness would have no effect on the mode I delamination resistance of the laminate. To further investigate the effect of the sheets on the fracture toughness, some UFSs with thinner thickness were inserted into different interfaces of the laminate. Testing data have also shown that no significant effect on the mode I delamination resistance was recognized, although a summation of the sheets was thick. Fractured specimens analysis indicated no obvious delamination was observed when the incorporated sheet was thin.