In this study, the three-point bending behavior of aluminum sheets with three different V-notch lengths repaired with a nanocomposite patch was experimentally investigated. Two different types of repair procedures, single-sided and double-sided, were applied to the notched plates. The nanocomposite materials used in patching have a carbon/epoxy/multiwalled carbon nanotube–OH structure. 5754 series H111 tempered aluminum was used as the plate material. According to the notch size change of the sheets, three-point bending values were determined for one-sided patching and double-sided patching, and graphics were created. Besides, the mechanical properties of the patch material were determined, and then Fourier transform infrared spectroscopy and scanning electron microscopy analyses were performed. The three-point bending strength increased up to 4.5, 9.0 and 6.5 times on 10 mm depth, 20 mm width; 20 mm depth, 10 mm width; and 20 mm depth, 20 mm width samples with double-sided patches, respectively.

中文翻译：

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纳米复合贴片修复V型缺口铝材的三点弯曲性能

在这项研究中，实验研究了用纳米复合材料补片修复的具有三种不同 V 型缺口长度的铝板的三点弯曲行为。对缺口板应用了两种不同类型的修复程序，单面和双面。用于修补的纳米复合材料具有碳/环氧树脂/多壁碳纳米管-OH 结构。5754系列H111回火铝用作板材。根据板材缺口尺寸变化，确定单面贴片和双面贴片的三点弯曲值，并制作图形。此外，确定了贴片材料的机械性能，然后进行了傅里叶变换红外光谱和扫描电子显微镜分析。三点抗弯强度提升至4.5，9.0 和 6.5 倍于 10 毫米深度，20 毫米宽度；20 毫米深，10 毫米宽；和 20 mm 深、20 mm 宽的样品，分别带有双面贴片。