Method for measuring interlayer spacing of leather sample cross-section sequence pictures obtained by layer-removal method
A technology of sequence pictures and layer spacing, applied in the direction of measuring devices, instruments, optical devices, etc., can solve the problems of difficult and accurate application, large error, troublesome operation, etc., to achieve the convenience and accuracy of operation, accurate and convenient measurement Effect
Inactive Publication Date: 2016-08-24
QILU UNIV OF TECH
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Problems solved by technology
The existing method of obtaining the distance between adjacent sections (interlayer spacing) is to directly measure the thickness of the substrate, and calculate the interlayer spacing by comparing the difference in substrate thickness corresponding to different sections. This method has a large error
There is also a hardness tester indentation method to measure the interlayer spacing. This method has high accuracy, but it needs to be indented continuously, and the operation is troublesome. Moreover, this method is mostly used on hard samples such as metals. For leather and its packaging Softer materials such as buried resin are more difficult to apply accurately due to unclear indentation
Method used
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Embodiment 1
[0026] (1) Add 25 parts by mass of epoxy curing agent into 100 parts of epoxy resin and stir evenly, put it on a vibrating table and vibrate for 5 minutes to discharge the mixed air to obtain resin glue;
[0027] (2) Immerse the leather sample with a length of 15mm and a width of 3mm into the resin glue solution prepared in step (1), so that the leather sample is fully absorbed by the resin, then take out the sample, put it in a constant temperature drying oven at 60°C for 2 hours, and obtain a cured sample strip;
[0028] (3) Sand each side of the cured leather spline flat with sandpaper to form a regular cuboid, and sand the end to be observed until the leather section to be observed is exposed;
[0029] (4) Glue two squares with a side length of 2mm to the two opposite sides of the polished spline in step (3) with the resin glue prepared in step (1), so that one vertex of the square is in line with the step ( 3) The leather cross-section to be observed exposed by grinding ...
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The invention provides a method for measuring the layer spacing of leather sample section sequence pictures, which is characterized in that a square is pre-embedded next to the leather sample in the process of metallographic sample preparation, and then polished layer by layer, during the process of obtaining sequence section pictures under a microscope At the same time, the square section image is obtained, and the layer spacing of the sequence picture is determined by measuring and calculating the change of the square section length. The calculation formula is: Hmn=(Ln–Lm) / 2, where Lm is the square section length in the mth layer picture, Ln is the length of the square section in the image of the nth layer, and Hmn is the layer spacing between the m layer and the n layer.
Description
technical field [0001] The invention relates to a measuring method, in particular to a measuring method for obtaining the interlayer spacing of leather sample cross-section sequence pictures by layer removal method. Background technique [0002] The three-dimensional weaving network structure of leather can be established through three-dimensional reconstruction technology, and then the three-dimensional structure information of leather can be obtained by studying the three-dimensional weaving network structure. To establish a 3D reconstruction model, it is first necessary to obtain sequential pictures of leather sections. The layer removal method is to embed and polish the leather and observe it with a microscope to obtain a cross-sectional picture, then polish it to a certain thickness and then observe it with a microscope to obtain another cross-sectional picture, and repeat this process to obtain a series of cross-sectional pictures. The existing method of obtaining the...
Claims
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IPC IPC(8): G01B11/14
Inventor 张华勇
Owner QILU UNIV OF TECH