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Modulated vibration texturing of hierarchical microchannels with controllable profiles and orientations
CIRP Journal of Manufacturing Science and Technology ( IF 4.8 ) Pub Date : 2020-05-20 , DOI: 10.1016/j.cirpj.2020.04.002
Jianjian Wang , Ru Yang , Shiming Gao , Fei Weng , Yaoke Wang , Wei-Hsin Liao , Ping Guo

Hierarchical microchannels, which consist of the primary channel formation and superimposed secondary nanostructures, are attracting ever-increasing attention due to their unique capacity to enhance and modify the surface characteristics and functional performance. The mechanical machining methods for microchannel fabrication, such as micro-milling and diamond turning, can achieve high material removal rates without changing material properties. However, they have limited capacity to control the channel cross-section profiles and shapes due to the relative size between the channel dimension and tool geometry. This study proposes a new cutting-based approach for the fast and cost-effective fabrication of hierarchical microchannels with controllable profiles and orientations by utilizing modulated elliptical vibration texturing. The modulation motion is adopted to form the primary channel in an incremental approach, while the elliptical vibration texturing is utilized to create micro/nano-scale secondary textures. By controlling the tool modulation trajectory, hierarchical dimple arrays with controllable cross-section profiles are first demonstrated. Then, by programming the layout of dimples to adjust the overlapping ratio between each cut, channels can be formed with arbitrary cross-section profiles and orientations. The efficacy of the proposed process has been demonstrated through numerical simulation and experimental results. Hierarchical microchannels with straight and curving shapes, as well as different cross-section profiles (sinusoidal, triangular, trapezoidal), have been presented.



中文翻译:

具有可控轮廓和方向的分层微通道的调制振动纹理

由主要通道形成和叠加的次要纳米结构组成的分层微通道,由于其独特的增强和修饰表面特性和功能性能的能力而受到越来越多的关注。用于微通道制造的机械加工方法(例如微铣削和金刚石车削)可以在不改变材料性能的情况下实现较高的材料去除率。但是,由于通道尺寸和刀具几何形状之间的相对大小,它们控制通道横截面轮廓和形状的能力有限。这项研究提出了一种新的基于切割的方法,通过利用调制的椭圆振动纹理化,可以快速,经济地制造具有可控轮廓和方向的分层微通道。采用调制运动以增量方式形成主通道,而利用椭圆振动纹理来创建微/纳米级次要纹理。通过控制工具的调制轨迹,首先展示了具有可控横截面轮廓的分层酒窝阵列。然后,通过对凹坑的布局进行编程以调整每个切口之间的重叠率,可以形成具有任意横截面轮廓和方向的通道。通过数值模拟和实验结果证明了该方法的有效性。已经提出了具有笔直和弯曲形状以及不同横截面轮廓(正弦,三角形,梯形)的分层微通道。而椭圆振动纹理用于创建微米/纳米级的二级纹理。通过控制工具的调制轨迹,首先展示了具有可控横截面轮廓的分层酒窝阵列。然后,通过对凹坑的布局进行编程以调整每个切口之间的重叠率,可以形成具有任意横截面轮廓和方向的通道。通过数值模拟和实验结果证明了该方法的有效性。已经提出了具有笔直和弯曲形状以及不同横截面轮廓(正弦,三角形,梯形)的分层微通道。而椭圆振动纹理用于创建微米/纳米级的二级纹理。通过控制工具的调制轨迹,首先展示了具有可控横截面轮廓的分层酒窝阵列。然后,通过对凹坑的布局进行编程以调整每个切口之间的重叠率,可以形成具有任意横截面轮廓和方向的通道。通过数值模拟和实验结果证明了该方法的有效性。已经提出了具有笔直和弯曲形状以及不同横截面轮廓(正弦,三角形,梯形)的分层微通道。首先演示了具有可控制横截面轮廓的分层酒窝阵列。然后,通过对凹坑的布局进行编程以调整每个切口之间的重叠率,可以形成具有任意横截面轮廓和方向的通道。通过数值模拟和实验结果证明了该方法的有效性。已经提出了具有笔直和弯曲形状以及不同横截面轮廓(正弦,三角形,梯形)的分层微通道。首先演示了具有可控制横截面轮廓的分层酒窝阵列。然后,通过对凹坑的布局进行编程以调整每个切口之间的重叠率,可以形成具有任意横截面轮廓和方向的通道。通过数值模拟和实验结果证明了该方法的有效性。已经提出了具有笔直和弯曲形状以及不同横截面轮廓(正弦,三角形,梯形)的分层微通道。通过数值模拟和实验结果证明了该方法的有效性。已经提出了具有笔直和弯曲形状以及不同横截面轮廓(正弦,三角形,梯形)的分层微通道。通过数值模拟和实验结果证明了该方法的有效性。已经提出了具有笔直和弯曲形状以及不同横截面轮廓(正弦,三角形,梯形)的分层微通道。

更新日期:2020-05-20
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