CN203643346U - Multi-direction crease recovery testing device for fabrics - Google Patents
Multi-direction crease recovery testing device for fabrics Download PDFInfo
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- CN203643346U CN203643346U CN201420031126.0U CN201420031126U CN203643346U CN 203643346 U CN203643346 U CN 203643346U CN 201420031126 U CN201420031126 U CN 201420031126U CN 203643346 U CN203643346 U CN 203643346U
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- 239000004744 fabric Substances 0.000 title claims abstract description 85
- 238000011084 recovery Methods 0.000 title claims abstract description 24
- 238000012360 testing method Methods 0.000 title abstract description 10
- 239000011324 bead Substances 0.000 claims description 12
- 238000009781 safety test method Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000037303 wrinkles Effects 0.000 description 17
- 238000000034 method Methods 0.000 description 12
- 238000000354 decomposition reaction Methods 0.000 description 7
- 238000004458 analytical method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000010998 test method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 229920004933 Terylene® Polymers 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
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- Treatment Of Fiber Materials (AREA)
Abstract
The utility model relates to a multi-direction crease recovery testing device for fabrics. The multi-direction crease recovery testing device for fabrics comprises a fabric multi-direction creasing device as well as a fabric crease image acquiring and treating device. The fabric multi-direction crease recovery testing device provided by the utility model has the beneficial effects that an index for showing the fabric crease resistance is obtained by image treatment, and the fabric multi-direction crease recovery testing device has the advantages of accuracy, convenience, good repeatability, time and labor conservation, cost saving and the like.
Description
Technical field
The utility model belongs to textile garment performance test field, relates in particular to the multi-direction crease recovery system safety testing device of a kind of fabric.
Background technology
Wrinkle resistance refers to the ability of the scuffing that fabric opposing external force causes.Wrinkle resistance typically refers to the reply degree that produces under external force folding line, is called again wrinkle (folding line) recovery.The quality of crease recovery is directly connected to outward appearance and the flatness of fabric, to its carry out accurately test and objective evaluation extremely important.Common method of testing has crease recovery horn cupping and wring method.The former replys angle by measuring after fabric folded exerting pressure; The latter is by the compression that rotates a circle of upper and lower fabric both sides, evaluates wrinkle grade except pressing postpone.
All there is certain problem in these two kinds of methods: the wrinkle of fabric have obvious anisotropy, crease recovery horn cupping only produces the wrinkle of single direction, and only characterize the wrinkle resistance of monoblock fabric with the creasy recovery angle of fabric longitude and latitude both direction, obviously do not there is science and rationality.The folding line parallel to each other along fabric along the bias direction that wring method causes when producing and wringing out after similar clothes are washed, has only reflected the wrinkle performance of fabric along the bias direction.These two kinds of methods all can not characterize the comprehensive crease recovery of fabric all directions obviously.
Summary of the invention
The purpose of this utility model is the problem existing in the test of above crease recovery of fabrics, provides a kind of proving installation and method of testing that can the multi-direction crease recovery of concentrated expression fabric.
Above-mentioned technical purpose of the present utility model is achieved through the following technical solutions: the multi-direction crease recovery system safety testing device of fabric, comprises obtaining and treating apparatus of the multi-direction wrinkling device of fabric and fabric pincher image.Wherein the multi-direction wrinkling device material requested of fabric has bead and bungee, and bungee is used for tying up the fabric that has wrapped up bead, is jointly played fabric is applied to the effect from multiple different directions external force by bead and bungee, makes fabric produce divergent shape folding line; The acquisition device of fabric pincher image is digital camera or scanner, and the treating apparatus of fabric pincher image is computing machine.
Fabric is produced after multi-direction wrinkle by strapping, obtain fabric pincher image with scanner or digital camera again, then first the fabric pincher image obtaining is carried out to pre-service with computing machine by image processing techniques, comprise: coloured image gray processing, contrast enhancement processing and denoising, then utilize wavelet analysis technology to carry out wavelet decomposition to the fabric pincher image after pre-service, and extract decompose after each layer of level detail standard deviation, vertical detail standard deviation, with diagonal detail standard deviation, and by total standard deviation of above three directions as evaluation index, total large fabric of standard deviation, crease-resistant ability.
The beneficial effects of the utility model: the crease-resistant ability that can only obtain fabric single direction for existing crease recovery of fabrics method of testing, can not characterize the multi-direction comprehensive wrinkle performance of fabric, design a set of proving installation that can the multi-direction crease recovery of test fabric, and obtain reflecting the index of wrinkle resistance in fabrics by image processing, have accurate convenience, favorable repeatability, time saving and energy saving, save the advantages such as cost.
Brief description of the drawings
The multi-direction process for creping of Fig. 1 fabric and device vertical view;
The multi-direction process for creping of Fig. 2 fabric and device front view (FV);
The multi-direction crease recovery wrinkle resistance of Fig. 3 fabric proving installation;
The principle of wavelet analysis of Fig. 4 fabric pincher image.
Embodiment
By the following examples, and by reference to the accompanying drawings, the technical solution of the utility model is further described in detail.
The multi-direction crease recovery system safety testing device of fabric, comprises obtaining and treating apparatus of the multi-direction wrinkling device of fabric and fabric pincher image.The multi-direction wrinkling device material requested of fabric has bead, ties up with bungee the hollow tubular slightly larger than the small ball's diameter etc.The acquisition device of fabric pincher image is digital camera or scanner, and the treating apparatus of fabric pincher image is computing machine, and wherein the bead in the present embodiment is the spheroid of 1.5 centimetres of diameters.
Wrinkle resistance in fabrics method of testing of the present utility model comprises the following steps:
(1) fabric 1 to be measured is pressed smooth after, be cut into given size (in the present embodiment, sample is of a size of 15 × 15cm); And put on broadwise mark 2 and warp-wise mark 3;
(2) fabric to be measured 1 after cutting is placed on to the upper surface of hollow steel pipe 4, and bead 5 is put in to the center of square fabric, i.e. the intersection point place of mark line 2 and 3, as shown in Figure 1;
(3) the move up bungee 6 at the outer wall place (apart from coboundary 1 centimeters) that is enclosed within hollow steel pipe 4, make fabric 1 evenly wrap bead 2 by the movement of bungee 6, with bungee 6, the fabric that encases bead is tied up solid again, note every fabric to tie up the number of turns unified, by bead and bungee, fabric is applied to the effect from multiple different directions external force, make fabric produce divergent shape folding line and make fabric produce the radial folding line of being dispersed by middle mind-set surrounding;
(4) tie up the set time after (the present embodiment is 2 minutes), bungee is cut off with scissors, and fabric is spread out by the light gesture of trying one's best;
(5) wrinkle fabric is put into scanner 7 and scan, while noting scanning, do not have pressure to make fabric pincher produce distortion;
(6) to the wrinkle image input computing machine 8 after scanning, and carry out following pre-service:
The first step, becomes unified size by the image cropping obtaining, and coloured image is converted into gray level image.
Second step, strengthens picture contrast.Adopt the method for gray scale linear transformation to strengthen dynamically the contrast of image, can make the tonal range of image dynamically strengthen, the contrast of image is effectively expanded, and makes image more clear, and concrete steps are:
1. draw the histogram of gray level image, observe the intensity profile situation of image by histogram, determine the gray level interval that needs conversion;
2. utilize the contrast of the method stretching image of linear transformation, change the intensity profile scope of image, outstanding interested region, suppresses uninterested region, shows the image after linear transformation.
3. image denoising.Select the method for wavelet packet denoising to suppress the noise in image, this kind of method can be removed the high-frequency information that noise also can retain image.
(7) use wavelet analysis technology to carry out the decomposition of the different numbers of plies to pretreated fabric pincher image, as shown in Figure 4, the principle of wavelet analysis is that picture breakdown is become to low frequency and HFS, wherein low frequency part has reflected the principal character of image, and the not details of presentation video of HFS, Fig. 4 (a) represents fabric pincher image, Fig. 4 (b) represents through one deck wavelet decomposition, cA is approximation coefficient, it represents the low-frequency component of horizontal and vertical directions, its excess-three number of sub images is detail coefficients, wherein cH1 is level detail coefficient, represent the radio-frequency component of horizontal direction and the low-frequency component of vertical direction, cV1 is vertical detail coefficient, represents the radio-frequency component of vertical direction and the low-frequency component of horizontal direction, cD1 is diagonal detail coefficient, represents the radio-frequency component of horizontal and vertical direction.Wherein approximation coefficient cA can carry out again 2 grades of decomposition, as shown in Figure 4 (c), can also proceed 3 grades, 4 grades ... wavelet decomposition.
(8) extract level detail coefficient standard deviation, vertical detail coefficient standard deviation and the diagonal detail coefficient standard deviation of each decomposition level, by total standard deviation of above three directions, characterize the crease intensity of fabric, wavelet coefficient standard deviation is larger, illustrates that fabric pincher degree is more serious.
With the device in the present embodiment and image processing method, to 20 kinds of common fabrics, (raw material comprises cotton, fiber crops, silk, wool, terylene and blending product thereof) carry out the test of the multi-direction wrinkle resistance of fabric, and with wavelet analysis, 6 is the best number of plies of decomposing, the total standard deviation of detail coefficients of three directions of fabric of now extracting with utilize fabric that YG541E type fully-automatic laser fabric crease elasticity test instrument records from 0 ° (being warp-wise fibre direction) every 10 °, to 170 ° (due to 180 ° of i.e. 0 ° of directions), the average creasy recovery angle related coefficient of totally 18 angle directions is the highest, reach 0.95.The regression equation of the two is Y=-0.0004X
2-0.0845X+139.12, wherein Y be fabric from 0 ° to 170 °, every the mean value of 10 ° of creasy recovery angles of surveying, X be with the method gained fabric wavelet decomposition number of plies in the utility model be 6 o'clock, the total standard deviation of detail coefficients of three directions of wrinkle image.Above regression equation can be used for predicting the multi-direction average creasy recovery angle of fabric, and without carrying out repeatedly duplicate measurements, time saving and energy saving, improve again work efficiency, provide cost savings.
Be only preferred embodiment of the present utility model in sum, be not used for limiting practical range of the present utility model.Be that all equivalences of doing according to the content of the utility model claim change and revision, be technology category of the present utility model.
Claims (1)
1. the multi-direction crease recovery system safety testing device of fabric, comprise obtaining and treating apparatus of the multi-direction wrinkling device of fabric and fabric pincher image, it is characterized in that: the multi-direction wrinkling device material requested of fabric has bead and bungee, bungee is used for tying up the fabric that has wrapped up bead, jointly play fabric is applied to the effect from multiple different directions external force by bead and bungee, make fabric produce divergent shape folding line; The acquisition device of fabric pincher image is digital camera or scanner, and the treating apparatus of fabric pincher image is computing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420031126.0U CN203643346U (en) | 2014-01-17 | 2014-01-17 | Multi-direction crease recovery testing device for fabrics |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420031126.0U CN203643346U (en) | 2014-01-17 | 2014-01-17 | Multi-direction crease recovery testing device for fabrics |
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| CN203643346U true CN203643346U (en) | 2014-06-11 |
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| CN201420031126.0U Expired - Lifetime CN203643346U (en) | 2014-01-17 | 2014-01-17 | Multi-direction crease recovery testing device for fabrics |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760162A (en) * | 2014-01-17 | 2014-04-30 | 浙江理工大学 | Test device and method of multi-directional wrinkle recovery performance of fabric |
| CN106198937A (en) * | 2016-07-19 | 2016-12-07 | 江南大学 | A kind of dynamic evaluation method of crease recovery properties of woven fabrics |
| CN109813873A (en) * | 2019-01-18 | 2019-05-28 | 江南大学 | A kind of device of automatic detection crease recovery properties of woven fabrics |
| CN109813876A (en) * | 2019-01-18 | 2019-05-28 | 江南大学 | A kind of device and detection method of automatic detection crease recovery properties of woven fabrics |
-
2014
- 2014-01-17 CN CN201420031126.0U patent/CN203643346U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760162A (en) * | 2014-01-17 | 2014-04-30 | 浙江理工大学 | Test device and method of multi-directional wrinkle recovery performance of fabric |
| CN103760162B (en) * | 2014-01-17 | 2016-03-02 | 浙江理工大学 | The multi-direction crease recovery system safety testing device of fabric and method |
| CN106198937A (en) * | 2016-07-19 | 2016-12-07 | 江南大学 | A kind of dynamic evaluation method of crease recovery properties of woven fabrics |
| CN109813873A (en) * | 2019-01-18 | 2019-05-28 | 江南大学 | A kind of device of automatic detection crease recovery properties of woven fabrics |
| CN109813876A (en) * | 2019-01-18 | 2019-05-28 | 江南大学 | A kind of device and detection method of automatic detection crease recovery properties of woven fabrics |
| CN109813873B (en) * | 2019-01-18 | 2021-05-28 | 江南大学 | Device for automatically detecting crease recovery performance of fabric |
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| C14 | Grant of patent or utility model | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20140611 Effective date of abandoning: 20160302 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20140611 Effective date of abandoning: 20160302 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |