基于傅立叶变换的手工纸纤维取向分析方法研究

Analysis of fiber orientation of handmade paper based on fast Fourier transform

针对中国传统手工纸制作工艺灵活多样,制出的手工纸纤维取向分布存在差异的现实情况,进行了无损评价手工纸纤维取向的研究。针对纸张显微透射图像,设计了基于快速傅立叶变换(FFT)的纤维取向分析模型和评价参数。模拟实验验证了方法的可行性。用两种不同工艺、原料的手工纸实物进行了实验,与传统的抗张强度测试进行了比较,证明了方法的有效性。实验表明,该方法能够应用于手工纸纤维取向分析和纸张匀度评价。方法快速、无损,为手工纸分析提供了新途径。

Aiming at traditional Chinese handmade paper＇ s great variety in fabricating process and obvious differences in fiber orientation, a study of fiber orientation of handmade paper was conducted. To realize non-destructive evaluation of fiber orientation, a new fiber distribution analysis model and a uniform evaluation parameter were introduced based on the fast Fourier transform （FFT）. The feasibility of the method was verified through simulation experiments. Two kinds of handmade paper, bark paper and hemp paper, were tested by FFT testing and tensile strength testing. The experimental results show that this new method is suitable for analysis of fiber orientation of handmade paper. It provides a new, rapid, and non-destructive way for handmade paper analysis.