CN110243509A - A kind of stress mornitoring technique of novel transparent composite material - Google Patents
A kind of stress mornitoring technique of novel transparent composite material Download PDFInfo
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- CN110243509A CN110243509A CN201910466525.7A CN201910466525A CN110243509A CN 110243509 A CN110243509 A CN 110243509A CN 201910466525 A CN201910466525 A CN 201910466525A CN 110243509 A CN110243509 A CN 110243509A
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- 238000000034 method Methods 0.000 title claims abstract description 73
- 239000002131 composite material Substances 0.000 title claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 63
- 230000008569 process Effects 0.000 claims abstract description 37
- 230000007547 defect Effects 0.000 claims abstract description 14
- 238000009826 distribution Methods 0.000 claims abstract description 14
- 230000003595 spectral effect Effects 0.000 claims abstract description 11
- 238000000465 moulding Methods 0.000 abstract description 4
- 230000003287 optical effect Effects 0.000 description 7
- 238000001514 detection method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000011521 glass Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000007373 indentation Methods 0.000 description 3
- 230000005291 magnetic effect Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000012780 transparent material Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000010429 evolutionary process Effects 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000001683 neutron diffraction Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
-
- 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
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
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- General Physics & Mathematics (AREA)
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- Life Sciences & Earth Sciences (AREA)
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- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention provides a kind of stress mornitoring technique of novel transparent composite material, which is characterized in that it includes the following steps: that upper polaroid group and down polaroid group are adjusted to 90 degree of intersections by (1)；(2) product to be detected is placed between upper polaroid group and down polaroid group；(3) spectral signature is presented to judge the stress state of product to be detected in product to be detected from above upper polaroid group；Product to be detected spectral signature can be presented to judge the stress particular state of product to be detected from above upper polaroid group in the present invention, specific defect in the specific distribution situation of material i.e. in product, the specific flow regime in product in material forming process or product in material forming process, and according to the stress particular state of product, i.e., the specific defect in the specific distribution situation of material in product, the specific flow regime in product in material forming process or product in material forming process is that the perfect of moulding process of composite material provides foundation and parameter.
Description
Technical field
The present invention relates to a kind of stress mornitoring technique more particularly to a kind of stress mornitoring works of novel transparent composite material
Skill.
Background technique
When object is deformed due to external cause, i.e. stress, humidity, change of temperature field etc., generated between each section in object
The internal force of interaction, the internal force on unit area are known as stress.Stress is vector, and the component reversed along section is referred to as just being answered
Power, component tangentially are known as shearing stress.
Because of the presence of stress, after by external influence, when as touched chemical solvent or baking vanish rear end when bat printing
High-temperature baking can lure stress release into and crack in stress-retained position.Cracking be concentrated mainly at cast gate or excessive filling at.
Because of the presence of residual stress, appearance when product has the internal stresses release or high temperature of long period in room temperature
The process that residual stress discharges in short time, while position intensity difference is locally present in product, product will be in stress-retained position
Generate warpage or problem on deformation.
Because of the presence of stress, during after product placement or processing, if environment reaches certain temperature, product
Will stress release and change.
Stress in object a little on all possible directions is known as the stress state of the point.But cross a little can make it is numerous
Plane, if stress state a little could be described with the stress in numerous plane? by following analysis it is found that only needing
Stress in orthogonal three planes of more used any one group can represent stress state a little, and on other sections
Stress can all be indicated with this group of stress and its with the position relation in the section that need to be investigated.
Currently, residual stress detection loseless method is mainly X-ray diffraction method, neutron diffraction method, method of magnetic, surpasses in material
Sound method and Indentation strain method etc..Ray law theory is perfect, but makes its application because having radiohazard and being only capable of measurement surface stress
It is very limited；Method of magnetic is surveyed according to the variation relation in ferromagnetic magnetic saturation process between stress and magnetization curve
It is fixed, it is applicable in a certain range；Indentation strain method uses resistance strain gage as measurement sensing element, at strain center position
It uses Impulsive load manufacture impression to replace drilling, the variation of elastic region strain increment outside indented area is recorded by deformeter, from
And the true elastic strain for corresponding to residual stress size is obtained, find out the size of residual stress.
But ray method is directly treated attacking material surface and is damaged；And ferromagnet need to be attached to material surface and could survey
Laser action surface shallow-layer stress is measured, laser optical path can have been blocked；Indentation strain method needs to be tightly attached to the material back side, works as laser
Material surface strain is too small in mechanism, causes measurement error big.Meanwhile these methods be difficult quick response Asia ms magnitude with
On ess-strain develop.It therefore meets not in laser action materials process ess-strain evolutionary process measurement.
Optical interference metering is in the detection of material miniature deformation, the refractometry of optical medium and optical wavefront detection etc.
Aspect extensive application, such as utilize the mirror surface depth of parallelism and roughness in interferometer detection optical manufacturing.They are usually utilized
Light penetrates medium, calculates internal structure and surface structure information that optical path difference obtains the transparent medium；But not using dry
Interferometer detection surface micro-structure variation causes the change in optical path length of reflection light, obtain the variation of surface texture caused by internal stress and
The information that its surface texture itself changes.
Summary of the invention
Based on the deficiencies of the prior art, it is an object of the present invention to a kind of stress of novel transparent composite material
Product to be detected spectral signature can be presented to judge product to be detected from above upper polaroid group in characterization processes
Stress particular state, i.e., the specific distribution situation of material in product, specific flow regime or production in product in material forming process
Specific defect in product in material forming process, and according to the stress particular state of product, i.e., material is specifically distributed feelings in product
Specific defect in specific flow regime or product in condition, product in material forming process in material forming process is composite wood
The perfect offer foundation and parameter of the moulding process of material.
It is an object of the present invention to a kind of stress mornitoring technique of novel transparent composite material, feature exists
In comprising the following steps:
(1) upper polaroid group and down polaroid group are adjusted to 90 degree of intersections；
(2) product to be detected is placed between upper polaroid group and down polaroid group；
(3) spectral signature is presented to judge answering for product to be detected in product to be detected from above upper polaroid group
Power state, i.e., material formed in material distribution situation in product, the flow regime in product in material forming process or product
The defects of journey；
The improvement of stress mornitoring technique as novel transparent composite material of the present invention, novel transparent composite material of the present invention
Stress mornitoring technique adjust upper polaroid group and down polaroid by constantly rotating upper polaroid group or down polaroid group
Relative angle between group, spectral signature variation is presented from the product to be detected of dynamic observation above upper polaroid group come judge to
The stress state of the product of detection, i.e., material distribution situation in product, flow regime or production in product in material forming process
The defects of material forming process in product.
Compared with prior art, the stress mornitoring technique of novel transparent composite material of the present invention has below beneficial to effect
Fruit: product to be detected spectral signature can be presented to judge the stress tool of product to be detected from above upper polaroid group
Body state, i.e., material in the specific distribution situation of material in product, the specific flow regime in product in material forming process or product
Expect the specific defect in forming process, and according to the stress particular state of product, i.e., the specific distribution situation of material, product in product
Specific defect in specific flow regime or product in middle material forming process in material forming process be composite material at
The perfect offer foundation and parameter of type technique.
Detailed description of the invention
Fig. 1 is that stress mornitoring instrument is bowed in the stress mornitoring technique preferred embodiment of novel transparent composite material of the present invention
View.
Fig. 2 is the knot of stress mornitoring instrument in the stress mornitoring technique preferred embodiment of novel transparent composite material of the present invention
Structure schematic diagram.
Fig. 3 is the A- of stress mornitoring instrument in the stress mornitoring technique preferred embodiment of novel transparent composite material of the present invention
A sectional view.
Fig. 4 is the effect that product stress is weak in the stress mornitoring technique preferred embodiment of novel transparent composite material of the present invention
Figure；
Fig. 5 is the effect that product stress is strong in the stress mornitoring technique preferred embodiment of novel transparent composite material of the present invention
Figure；
Specific embodiment
The stress particular state for the product that the stress mornitoring technique of novel transparent composite material of the present invention can detecte, that is, produce
In the specific distribution situation of material in product, the specific flow regime in product in material forming process or product in material forming process
Specific defect.
With reference to shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the present invention provides a kind of stress mornitoring of novel transparent composite material
Technique, which is characterized in that it includes the following steps:
(1) upper polaroid group 2 and down polaroid group 3 are adjusted to 90 degree of intersections；
(2) product 6 to be detected is placed between upper polaroid group 2 and down polaroid group 3；
(3) spectral signature is presented to judge product to be detected in product to be detected from above upper polaroid group 2
Stress state, i.e., material molding in material distribution situation in product, the flow regime in product in material forming process or product
The defects of process；
In the present embodiment, the stress mornitoring technique of novel transparent composite material of the present invention is by constantly rotating upper polarisation
Piece group 2 or down polaroid group 3 adjust the relative angle between upper polaroid group 2 and down polaroid group 3, from upper polaroid group
Spectral signature variation is presented to judge the stress state of product to be detected, i.e. product in 2 top dynamic observations product to be detected
The defects of material forming process in flow regime or product in middle material distribution situation, product in material forming process.
Power on, turn on the switch, material to be detected is placed on glass 4 by lamp, that is, bright, rotates rotary glass 1, rotation
Turn glass 1 be transparent glass, examiner from the top of rotary glass 1 downwards from, material peripheral can be observed in stress mornitoring
Stress situation in instrument, according to observed stress situation, judge lens periphery stress whether uniformity or needs
Modified position, two kinds of situations generally occur: 1, stress is weak, and material peripheral is almost without any lines image, material forming process
In good fluidity, material is evenly distributed, material good forming effect, as shown in Figure 4；2, stress is too strong, and material peripheral is at an acute angle
The threadiness of strip, material are unevenly distributed, and the mobility in material forming process is bad, and material molding effect is bad, such as Fig. 5 institute
Show.
In the present embodiment, the stress of the novel transparent material of the stress mornitoring technique of novel transparent composite material of the present invention
Detecting instrument comprising 4, two groups of polaroids of light source, rotating device 1 and power supply, the light source 4 are electrically connected with the power supply,
One group or two groups of polaroids are mounted on the rotating device 1 in two groups of polaroids, and can be with the rotating dress
It sets 1 rotation and rotates.
In the present embodiment, the stress of the novel transparent material of the stress mornitoring technique of novel transparent composite material of the present invention
Two groups of polaroids of detecting instrument are arranged according to overlying relation, respectively upper polaroid group 2 and down polaroid group 3.
In the present embodiment, the stress of the novel transparent material of the stress mornitoring technique of novel transparent composite material of the present invention
The light source 4 of detecting instrument is located at the lower section of the down polaroid group 3.
Compared with prior art, the stress mornitoring technique of novel transparent composite material of the present invention has below beneficial to effect
Fruit: product to be detected spectral signature can be presented to judge the stress tool of product to be detected from above upper polaroid group
Body state, i.e., material in the specific distribution situation of material in product, the specific flow regime in product in material forming process or product
Expect the specific defect in forming process, and according to the stress particular state of product, i.e., the specific distribution situation of material, product in product
Specific defect in specific flow regime or product in middle material forming process in material forming process be composite material at
The perfect offer foundation and parameter of type technique.
Above disclosed is only presently preferred embodiments of the present invention, cannot limit the right of the present invention with this certainly
Range, therefore according to equivalent variations made by scope of the present invention patent, it is still within the scope of the present invention.
Claims (2)
1. a kind of stress mornitoring technique of novel transparent composite material, which is characterized in that it includes the following steps:
(1) upper polaroid group and down polaroid group are adjusted to 90 degree of intersections；
(2) product to be detected is placed between upper polaroid group and down polaroid group；
(3) spectral signature is presented to judge the stress shape of product to be detected in product to be detected from above upper polaroid group
State, i.e., in material distribution situation in product, the flow regime in product in material forming process or product in material forming process
Defect.
2. the stress mornitoring technique of one novel transparent composite material according to claim 1, which is characterized in that by not
Disconnected rotation upper polaroid group or down polaroid group adjust the relative angle between upper polaroid group and down polaroid group, from upper
Dynamic observation product presentation spectral signature to be detected changes the stress state to judge product to be detected above polaroid group,
Lacking in material forming process in material distribution situation i.e. in product, the flow regime in product in material forming process or product
It falls into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910466525.7A CN110243509A (en) | 2019-05-30 | 2019-05-30 | A kind of stress mornitoring technique of novel transparent composite material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910466525.7A CN110243509A (en) | 2019-05-30 | 2019-05-30 | A kind of stress mornitoring technique of novel transparent composite material |
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| Publication Number | Publication Date |
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| CN110243509A true CN110243509A (en) | 2019-09-17 |
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2019
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| US7061612B2 (en) * | 2004-09-28 | 2006-06-13 | Osram Sylvania Inc. | LED Polarimeter |
| CN201716137U (en) * | 2010-07-06 | 2011-01-19 | 北京奥博泰科技有限公司 | Toughened glass stress detection device |
| CN102226771A (en) * | 2011-03-25 | 2011-10-26 | 宁波大学 | An infrared glass internal defect and residual stress detection device and detection method |
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Application publication date: 20190917 |