Method of accurately measuring cross section area of single silk and application thereof

Abstract

The invention discloses a method of accurately measuring the cross section area of single silk and an application of the method in mechanical property testing. The method specifically includes: preparing a die, fixing a dyed silk on the die, making the silk to be parallel to one side of the die, and vertically fixing the die through embedding agents; conducting sample slicing and producing; collecting the image of the cross section of the silk; conducting data collection through image processing software, and obtaining the cross section area of the silk through formula computing. By adopting the method, image collection can be conducted by aid of optical microscopes used in normal laboratories, measuring of the cross section area of the silk can be finished in the normal laboratories without electron microscopes or other high-quality precision equipment, and therefore experiment operations are facilitated and experiment cost is saved; image processing is conducted through normal image processing software, people not versed in image processing and relevant computer knowledge can process the experiment results conveniently, and the experiment result obtaining period can be shortened.

Description

technical field [0001] The invention relates to sericulture science, in particular to a method for accurately measuring the cross-sectional area of ​​a single silk and its application. Background technique [0002] Silk is a continuous long fiber secreted by the silk gland of the silkworm, and is a natural protein fiber. Silk has been used in China for more than 4,700 years. In the long course of use, people have continuously improved and improved the quality of silk. In recent years, because silk fabrics have advantages that other fibers cannot match, such as lightness, softness, smoothness, breathability, gorgeous color, and luster, the silk fabric industry has developed rapidly. At the same time, scientists are committed to the development of new silk and expand the application field of silk. At present, silk is used in medicine, computer, national defense, aerospace and other fields. In 2002, Shao Zhengzhong found that the mechanical properties of domestic silkworm s...

AI Technical Summary

Problems solved by technology

Among them, the fixed-length weighing method obtains the average cross-sectional area of ​​a long section of silk. Because the thickness of silk is uneven and the density is difficult to measure, the fixed-length weighing method cannot accurately measure the cross-sectional area of ​​a single silk.

The non-contact resonance measurement method can obtain the average cross-sectional area of ​​a silk, but this method requires the experiment to be carried out in a completely vacuum environment, and is easily disturbed by factors such as vibration and friction, which is difficult to achieve in ordinary laboratories

Both computer vision method and image processing method need to obtain the cross-sectional image of silk first, and then obtain the cross-sectional area of ​​silk through subsequent image processing, but it is difficult to obtain the vertical cross-section of silk by traditional Hastelloy sectioning method

In addition, the process of computer processing pictures is relatively cumbersome, and the requirements for computer expertise are too high

Later, Liu Yanyan et al. (“Improvement of fiber cross-section slicing technology”, Progress in Textile Science and Technology, 2006) improved the sample processing method before slicing, which improved the slicing efficiency to a certain extent, but the collodion takes a long time to cure and has certain toxicity. Therefore, the application of this method is less

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