Study on the mechanical behavior of adhesive interface by digital image correlation

Study on the mechanical behavior of adhesive interface by digital image correlation
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数字图像相关研究粘合界面力学行为

DOI:
10.1007/s11433-011-4273-5
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发表时间:
2011-02
期刊:
Science China: Physics, Mechanics and Astronomy
影响因子:
--
通讯作者:
et.al
et.al
中科院分区:
其他
文献类型:
--
作者:
Guo, B. Q.;Xie H. M.;Zhu J.G.;et.al

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研究了单搭接试件在拉伸作用下的粘接层剪切模量和粘接结构破坏模式。铝-铝粘合剂由两种不同的粘合剂粘合:聚二甲基硅氧烷(PDMS)和环氧树脂。采用数字图像相关(DIC)方法测量了整个变形场,并用高分辨率显微镜记录了粘接层中间部分的图像。然后,用简单的纯剪切应变模型计算了两种胶粘剂的剪切模量。提出了单搭接结构在拉伸荷载作用下的数值模拟模型,并与试验结果进行了比较。结果表明,该方法能较好地估计出粘接层的剪切模量。对环氧胶粘剂/胶粘剂界面的破坏行为进行了分析和讨论。
The shear modulus of the adhesive layer and the failure mode of adhesive structure on single lap joint specimens under tensile tests are investigated in this paper. The aluminum-aluminum adherends are bonded by two different adhesives: polydimethylsiloxane (PDMS) and epoxy. The full deformation fields are measured using the digital image correlation (DIC) method with the images on the middle part of the adhesive layer recorded by a high resolution microscope. Then, the shear modulus values of the two adhesives are calculated with a simple pure shear strain model. A numerical model is proposed to simulate the single lap joint structure under tensile load in comparison with the experimental results. The results show that this method can successfully estimate the shear modulus of the adhesive layer. The failure behavior of epoxy adhesive/adherend interface is also analyzed and discussed.
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发表时间: 2006-08
影响因子: 2.4
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