CAJ | 학술논문

接触角是表征液体与固体润湿程度的重要度量参数，焊料、焊剂、焊盘及阻焊层的接触角与电子制造焊接工艺密切相关。针对目前基于图像测量接触角的精度还不够高的现状，提出运用Young-Laplace方程的物理原理作为图像处理的方法，基于液滴润湿形态图像处理体积并捕获顶点坐标作为拟合参数，获得良好的接触角测量精度，显著减小了重力、液滴体积和光反射干扰对测量结果的影响。
접촉각시표정액체여고체윤습정도적중요도량삼수，한료、한제、한반급조한층적접촉각여전자제조한접공예밀절상관。침대목전기우도상측량접촉각적정도환불구고적현상，제출운용Young-Laplace방정적물리원리작위도상처리적방법，기우액적윤습형태도상처리체적병포획정점좌표작위의합삼수，획득량호적접촉각측량정도，현저감소료중력、액적체적화광반사간우대측량결과적영향。
The contact angle is an important parameter quantifying the wettability of a solid surface by a liquid. The contact angles of the solder, the flux, the solder pad and solder mask plays an important role in welding procedure in electronic manufacturing. The methods available for droplet contact angle measurement though image processing is not accuracy enough. To deal with this problem, propose a novel contact angle measurement method based on the Young-Laplace equation. This method uses the observed height and volume of a droplet for the contact angle evaluation. Experiments show that the proposed method outperforms traditional methods in measurement accuracy. Furthermore, this method significantly reduces the effects of gravity, droplet volume, and light reflection interference on the measurement results.