Multi-direction stiffness test device and method for fabric

Abstract

The invention relates to multi-direction stiffness test device and method for fabric. The device disclosed by the invention comprises a box-shaped fabric sunken table, a pressure exerting component and an image taking device. The method disclosed by the invention comprises the following steps: ironing to-be-tested fabric and cutting into specified size; putting a sample at the upper end of the sunken table; adjusting and fixing the shooting angle and focus distance of a digital camera at the periphery of the sunken table and above the sunken table; lightly putting a weight at the position of the circle center of the sample at constant speed; shooting the sunken fabric from the upper part by using a digital camera of which the focus distance and the angle are adjusted after the weight is placed for schedule time; respectively shooting the sunken and deformed fabric from different angles by using the digital cameras at the periphery of the sunken table; leading the pictures of the shot fabric in five directions into auto CAD software; inquiring the image distance and the area function, and carrying out extraction of the stiffness index. The index reflecting the stiffness of the fabric is obtained by image treatment, and the method and the device have the advantages of being simple and convenient, accurate in test result and the like.

Description

technical field [0001] The invention belongs to the field of textile and garment performance testing, and in particular relates to a fabric multidirectional stiffness testing device and method. Background technique [0002] The ability of the fabric to resist the shape change in the bending direction is called the bending stiffness or stiffness, which is often used to evaluate the softness of the fabric, and also determines the drape and feel of the fabric. As people's requirements for textile fabrics shift from practical to comfortable, stiffness has become one of the important assessment indicators for textile fabric producers and clothing consumers, and fabrics for different purposes have different requirements. Generally, woven fabrics and knitted fabrics for clothing and daily life, in addition to patterns and colors that must meet consumer requirements, underwear fabrics need to have good softness, and outerwear fabrics need to maintain the necessary appearance and bea...

AI Technical Summary

Problems solved by technology

[0003] The existing fabric stiffness test methods, whether it is the inclined plane method, the heart-shaped method or the fabric style test method, can only obtain the stiffness index of a single direction each time, while GB / T18318-2001 "Determination of the bending length of textile fabric " and ZB W04003-87 "Test Method for Stiffness of Fabrics with Inclined Cantilever Beam Method" stipulates that the stiffness index of the fabric in the two directions of warp and weft is used to characterize the stiffness of the fabric, but due to the anisotropy of the fabric, the stiffness in different directions is different. Therefore, the bending in the two directions of warp and weft may not fully reflect the stiffness of the entire fabric

In order to obtain the comprehensive stiffness of the fabric in multiple directions, it is necessary to carry out multiple measurements, and the workload of the experiment will be very huge. It will consume a lot of fabric samples and take a lot of time, which is time-consuming, labor-intensive and material-consuming.

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