CN109142357A - The method of the formula of falling Ω test fabric bendability and drapability - Google Patents
The method of the formula of falling Ω test fabric bendability and drapability Download PDFInfo
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- CN109142357A CN109142357A CN201810903578.6A CN201810903578A CN109142357A CN 109142357 A CN109142357 A CN 109142357A CN 201810903578 A CN201810903578 A CN 201810903578A CN 109142357 A CN109142357 A CN 109142357A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N2021/8444—Fibrous material
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Abstract
The invention discloses the formula of falling Ω test fabric bendability and the methods of drapability.Currently, still lack can test fabric bendability and drapability simultaneously method.The present invention is as follows: one, cutting out the first rectangular specimen and the second rectangular specimen.I=1,2, step 2 is successively executed to seven.Two, it draws lines on the i-th rectangular specimen.Three, the i-th rectangular specimen is stitched into Ω shape.Four, the i-th rectangular specimen is hung upside down on pin.Five, the size of the i-th rectangular specimen is measured.Six, the i-th rectangular specimen water droplet depth-width ratio and sagging aspect ratio are calculated.Seven, the i-th rectangular specimen bending stiffness predicted value and suspended coefficient predicted value are calculated.Eight, the bending stiffness and suspended coefficient of tested fabric are calculated.The present invention can be obtained the data of three groups of measurement bendabilities and drapability in the test of one piece of sample, and three groups of data of acquisition are averaged with the accuracy that can be improved final gained bending stiffness and suspended coefficient.
Description
Technical field
The invention belongs to textile garment technical field of performance test, and in particular to a kind of formula of falling Ω test fabric bendability and
The method of drapability.
Background technique
Fabric bendability and drapability are always the emphasis of spinstry personnel concern, because they not only wear fabric
Comfort have a major impact, or wear the direct embodiment of aesthetics.Scholars are bent using a variety of technique study fabrics
Property, such as linear-viscoelastic theory and BP neural network；It also proposed a variety of methods to test it.About fabric fall
Research, have focused largely on how with various image processing techniques to fabric fall carry out modeling and index extraction.So far,
The drapability of fabric and the test of bendability are all independent operations, separately carry out, and in other words, still lack to test simultaneously
The method of both performances.
Summary of the invention
The purpose of the present invention is to provide a kind of formula of falling Ω test fabric bendability and the methods of drapability.
The specific steps of the present invention are as follows:
Step 1: a pin is fixed on perpendicular.By tested fabric ironing it is smooth after be cut into the first square
Shape sample and the second rectangular specimen.First rectangular specimen and the second rectangular specimen are in the rectangle of long 240mm, width 25mm.First
The length direction of rectangular specimen be parallel to tested fabric through to.The length direction of second rectangular specimen is parallel to tested fabric
Broadwise.I=1,2, step 2 is successively executed to seven.
Step 2: drawing middle separated time and two a quarter lines on the i-th rectangular specimen.Middle separated time be located at two four/
Between one line.Sample is divided into four essentially equal parts of shape by middle separated time, two a quarter lines.Middle separated time and two four
Width direction of/mono- line each parallel to the i-th rectangular specimen.
Step 3: the i-th rectangular specimen of bending, so that two a quarter line overlaps on the i-th rectangular specimen.Later, edge
Two a quarter linear slits close the i-th rectangular specimens.
Step 4: resulting i-th rectangular specimen of step 3 is inverted and is suspended on pin, so that two a quarter lines
Suture contacted with pin, and two width edges of the i-th rectangular specimen are routed up to far from the direction of pin.I-th square
Part on shape sample between two a quarter lines forms water droplet part, the part between a quarter line and corresponding width edge
Form hanging portion.
Step 5: the water droplet width D of the i-th rectangular specimen of measurementi, water droplet length Hi, the first sagging lateral distance Xi, second
Sagging lateral distance X 'i, the first sagging fore-and-aft distance Yi, the second sagging fore-and-aft distance Y 'i.Water droplet width DiThat is water droplet part two
The distance of side most outer.Water droplet length HiThat is distance of the water droplet section bottom to water droplet atop part.First sagging lateral distance Xi
For water droplet atop part to the horizontal distance of first hanging portion most outer.First sagging fore-and-aft distance YiIt is sagging for first
The vertical distance of part highest point and first hanging portion most outer.Second sagging lateral distance X 'iFor water droplet atop part
To the horizontal distance of second hanging portion most outer.Second sagging fore-and-aft distance Y 'iFor second hanging portion highest point with
The vertical distance of second hanging portion most outer.
Step 6: calculating the i-th rectangular specimen water droplet length-width ratioAnd sagging aspect ratio
Step 7: calculating the first bending stiffness predicted value E of the i-th rectangular specimeni, the second bending stiffness predicted value E 'iSuch as
Under:
Ei=5.6323Ai 2-53.912Ai+129.48；
E′i=6.8701Bi 2-46.214Bi+78.15。
Calculate the first suspended coefficient predicted value F of the i-th rectangular specimeni, the second Drape coefficient predicted value F 'iIt is as follows:
Fi=-0.1001Ai+0.8768；
F′i=-0.127Bi+0.7954。
Step 8: the bending stiffness end value E and suspended coefficient end value F that calculate tested fabric are as follows:
Further, in step 5, the water droplet width D of the i-th rectangular specimen is measuredi, water droplet length Hi, the first sagging transverse direction
Distance Xi, the second sagging lateral distance X 'i, the first sagging fore-and-aft distance Yi, the second sagging fore-and-aft distance Y 'iMethod specifically such as
Under:
The i-th rectangular specimen is shot from the direction for being parallel to the i-th rectangular specimen width edge with camera.Obtain sample photo.It will
Sample photo imports autoCAD software.And the inquiry range capability carried using autoCAD software, obtain the i-th rectangular specimen
Water droplet width Di, water droplet length Hi, the first sagging lateral distance Xi, the second sagging lateral distance X 'i, the first sagging fore-and-aft distance
Yi, the second sagging fore-and-aft distance Y 'i。
The method that distance is inquired in autoCAD software is as follows: successively clicking " tool ", " inquiry ", " distance ", and chooses
Two points for needing to measure distance, can obtain the distance between two o'clock.
The invention has the advantages that:
1, the present invention can measure the value of fabric bendability and drapability simultaneously.It avoids and is directed to hard and soft respectively and hangs
Property of hanging down is tested twice, is greatly accelerated the speed of fabric property measurement, is shortened the test period.
2, the present invention can be obtained the data of three groups of measurement bendabilities and drapability in the test of one piece of sample, to acquisition
Three groups of data are averaged the accuracy that can be improved final gained bending stiffness and suspended coefficient.
3, the present invention only needs a rectangular specimen that the measurement for measuring fabric bendability and drapability, process can be completed
It is simple and convenient.
Detailed description of the invention
Fig. 1 is that the i-th rectangular specimen produced by the present invention is suspended to the schematic diagram on white KT plate.
Specific embodiment
Below in conjunction with attached drawing, the invention will be further described.
A method of falling Ω formula test fabric bendability and drapability, the specific steps are as follows:
Step 1: fixing one block of white KT plate on metope, and a pin is plugged on white KT plate.It is knitted tested
The first rectangular specimen and the second rectangular specimen are cut into after object ironing is smooth.First rectangular specimen and the second rectangular specimen are in long
The rectangle of 240mm, width 25mm.The length direction of first rectangular specimen be parallel to tested fabric through to.Second rectangular specimen
Length direction is parallel to the broadwise of tested fabric.I=1,2, step 2 is successively executed to seven.
Step 2: drawing middle separated time and two a quarter lines on the i-th rectangular specimen.Middle separated time be located at two four/
Between one line.Sample is divided into four essentially equal parts of shape by middle separated time, two a quarter lines, and (each part is
The rectangle of 60mm × 25mm).The width direction of middle separated time and two a quarter lines each parallel to the i-th rectangular specimen.
Step 3: the i-th rectangular specimen of bending, so that two a quarter line overlaps on the i-th rectangular specimen.Later, edge
Two a quarter linear slits close the i-th rectangular specimens, at this point, the i-th rectangular specimen is in Ω shape.
Step 4: as shown in Figure 1, resulting i-th rectangular specimen of step 3 being inverted and is suspended to the pin of white KT plate
On, so that the suture of two a quarter lines is contacted with pin, and two width edges of the i-th rectangular specimen are to far from big
The direction of scalp acupuncture is routed up, and is naturally drooped.Part formation water droplet part on i-th rectangular specimen between two a quarter lines, four
Part between/mono- line and corresponding width edge forms hanging portion, and (i.e. the i-th rectangular specimen is by water droplet part and hanging portion
Composition).
Step 5: shooting the i-th rectangular specimen from the direction for being parallel to the i-th rectangular specimen width edge with camera after one minute.
Obtain sample photo.
Sample photo is imported into autoCAD software.And the inquiry range capability carried using autoCAD software, obtain i-th
The water droplet width D of rectangular specimeni, water droplet length Hi, the first sagging lateral distance Xi, the second sagging lateral distance X 'i, under first
Hang down fore-and-aft distance Yi, the second sagging fore-and-aft distance Y 'i.Water droplet width DiThat is the distance of water droplet part two sides most outer.Water droplet length
HiThat is distance of the water droplet section bottom (at middle separated time) to water droplet atop part (at a quarter line).First sagging lateral distance
XiFor water droplet atop part (at a quarter line) to the water of first hanging portion most outer (width edge of the i-th rectangular specimen)
Flat distance.First sagging fore-and-aft distance YiFor first hanging portion highest point and first hanging portion most outer it is vertical away from
From.Second sagging lateral distance X 'iFor the water of water droplet atop part (at a quarter line) to second hanging portion most outer
Flat distance.Second sagging fore-and-aft distance Y 'iFor the vertical of second hanging portion highest point and second hanging portion most outer
Distance.
The method that distance is inquired in autoCAD software is specific as follows: " tool ", " inquiry ", " distance " are successively clicked, and
Two points for needing to measure distance are chosen, the distance between two o'clock can be obtained.
Step 6: calculating the i-th rectangular specimen water droplet length-width ratioAnd sagging aspect ratio
Step 7: calculating the first bending stiffness predicted value E of the i-th rectangular specimeni, the second bending stiffness predicted value E 'iSuch as
Under:
Ei=5.6323Ai 2-53.912Ai+129.48；
E′i=6.8701Bi 2-46.214Bi+78.15。
Calculate the first suspended coefficient predicted value F of the i-th rectangular specimeni, the second Drape coefficient predicted value F 'iIt is as follows:
Fi=-0.1001Ai+0.8768；
F′i=-0.127Bi+0.7954。
Step 8: the bending stiffness end value E and suspended coefficient end value F that calculate tested fabric are as follows:
Claims (2)
1. the method for the formula of falling Ω test fabric bendability and drapability, it is characterised in that: Step 1: a pin is fixed on
On perpendicular；By tested fabric ironing it is smooth after be cut into the first rectangular specimen and the second rectangular specimen；First rectangular specimen
And second rectangular specimen be in long 240mm, width 25mm rectangle；The length direction of first rectangular specimen is parallel to tested fabric
Through to；The length direction of second rectangular specimen is parallel to the broadwise of tested fabric；I=1,2, step 2 is successively executed to seven；
Step 2: drawing middle separated time and two a quarter lines on the i-th rectangular specimen；Middle separated time is located at two a quarter lines
Between；Sample is divided into four essentially equal parts of shape by middle separated time, two a quarter lines；Middle separated time and two four/
Width direction of one line each parallel to the i-th rectangular specimen；
Step 3: the i-th rectangular specimen of bending, so that two a quarter line overlaps on the i-th rectangular specimen；Later, along two
A quarter linear slit closes the i-th rectangular specimen；
Step 4: resulting i-th rectangular specimen of step 3 is inverted and is suspended on pin, so that the seam of two a quarter lines
It is contacted at conjunction with pin, and two width edges of the i-th rectangular specimen are routed up to the direction far from pin；The examination of i-th rectangle
Part on sample between two a quarter lines forms water droplet part, and the part between a quarter line and corresponding width edge is formed
Hanging portion；
Step 5: the water droplet width D of the i-th rectangular specimen of measurementi, water droplet length Hi, the first sagging lateral distance Xi, it is second sagging
Lateral distance X 'i, the first sagging fore-and-aft distance Yi, the second sagging fore-and-aft distance Yi′；Water droplet width DiI.e. water droplet part two sides are most
The distance of outer；Water droplet length HiThat is distance of the water droplet section bottom to water droplet atop part；First sagging lateral distance XiFor water
Horizontal distance of the drop atop part to first hanging portion most outer；First sagging fore-and-aft distance YiFor first hanging portion
The vertical distance of highest point and first hanging portion most outer；Second sagging lateral distance X 'iFor water droplet atop part to
The horizontal distance of two hanging portion most outers；Second sagging fore-and-aft distance Yi' it is second hanging portion highest point and second
The vertical distance of a hanging portion most outer；
Step 6: calculating the i-th rectangular specimen water droplet length-width ratioAnd sagging aspect ratio
Step 7: calculating the first bending stiffness predicted value E of the i-th rectangular specimeni, the second bending stiffness predicted value Ei' it is as follows:
Ei=5.6323Ai 2-53.912Ai+129.48；
E′i=6.8701Bi 2-46.214Bi+78.15；
Calculate the first suspended coefficient predicted value F of the i-th rectangular specimeni, the second Drape coefficient predicted value Fi' it is as follows:
Fi=-0.1001Ai+0.8768；
Fi'=- 0.127Bi+0.7954；
Step 8: the bending stiffness end value E and suspended coefficient end value F that calculate tested fabric are as follows:
2. the method for the formula of falling Ω test fabric bendability according to claim 1 and drapability, it is characterised in that: step 5
In, measure the water droplet width D of the i-th rectangular specimeni, water droplet length Hi, the first sagging lateral distance Xi, the second sagging lateral distance
X′i, the first sagging fore-and-aft distance Yi, the second sagging fore-and-aft distance Yi' method it is specific as follows:
The i-th rectangular specimen is shot from the direction for being parallel to the i-th rectangular specimen width edge with camera；Obtain sample photo；By sample
Photo imports autoCAD software；And the inquiry range capability carried using autoCAD software, obtain the water droplet of the i-th rectangular specimen
Width Di, water droplet length Hi, the first sagging lateral distance Xi, the second sagging lateral distance X 'i, the first sagging fore-and-aft distance Yi,
Two sagging fore-and-aft distance Yi′；
The method that distance is inquired in autoCAD software is as follows: successively clicking " tool ", " inquiry ", " distance ", and chooses needs
Two points for measuring distance, can obtain the distance between two o'clock.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810903578.6A CN109142357B (en) | 2018-08-09 | 2018-08-09 | Method for testing fabric bending property and drapability in inverted omega mode |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810903578.6A CN109142357B (en) | 2018-08-09 | 2018-08-09 | Method for testing fabric bending property and drapability in inverted omega mode |
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| CN109142357B CN109142357B (en) | 2020-11-17 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110031332A (en) * | 2019-04-29 | 2019-07-19 | 西南大学 | A kind of test method of boardness |
| CN111487249A (en) * | 2020-05-22 | 2020-08-04 | 浙江理工大学 | Method for testing bending anisotropy of garment fabric |
| CN111579478A (en) * | 2020-05-22 | 2020-08-25 | 浙江理工大学 | Garment fabric stiffness and smoothness testing method capable of flexibly changing length of sample |
| CN111579387A (en) * | 2020-05-08 | 2020-08-25 | 浙江理工大学 | Method and device for testing softness of garment fabric |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031332A (en) * | 2019-04-29 | 2019-07-19 | 西南大学 | A kind of test method of boardness |
| CN110031332B (en) * | 2019-04-29 | 2023-03-31 | 西南大学 | Method for testing stiffness of fabric |
| CN111579387A (en) * | 2020-05-08 | 2020-08-25 | 浙江理工大学 | Method and device for testing softness of garment fabric |
| CN111579387B (en) * | 2020-05-08 | 2023-07-28 | 杭州万事利丝绸数码印花有限公司 | Method and device for testing softness of clothing fabric |
| CN111487249A (en) * | 2020-05-22 | 2020-08-04 | 浙江理工大学 | Method for testing bending anisotropy of garment fabric |
| CN111579478A (en) * | 2020-05-22 | 2020-08-25 | 浙江理工大学 | Garment fabric stiffness and smoothness testing method capable of flexibly changing length of sample |
| CN111487249B (en) * | 2020-05-22 | 2023-06-02 | 杭州万事利丝绸数码印花有限公司 | Garment fabric bending anisotropy test method |
| CN111579478B (en) * | 2020-05-22 | 2023-06-30 | 杭州万事利丝绸文化股份有限公司 | Garment fabric stiffness testing method capable of flexibly changing sample length |
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