CN103901063A - Method for testing C-fiber reinforced resin based composite material by virtue of X-ray diffraction - Google Patents
Method for testing C-fiber reinforced resin based composite material by virtue of X-ray diffraction Download PDFInfo
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- CN103901063A CN103901063A CN201410166088.4A CN201410166088A CN103901063A CN 103901063 A CN103901063 A CN 103901063A CN 201410166088 A CN201410166088 A CN 201410166088A CN 103901063 A CN103901063 A CN 103901063A
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Abstract
The invention discloses a method for testing a C-fiber reinforced resin based composite material through X-ray diffraction, and relates to a method for testing the C-fiber reinforced resin based composite material, and the method is used for solving the technical problems that a conventional method for testing the C-fiber reinforced resin based composite material by virtue of X-ray can only test residual stress on a surface layer of a test piece of the C-fiber reinforced resin based composite material and cannot test the residual stress in various depths. The method comprises the following steps: corroding the test piece of the C-fiber reinforced resin based composite material by using hydrochloric acid layer by layer, washing the surface by using deionized water, putting into an X-ray stress tester, testing, and calculating to obtain the residual stress in various depths. The method for testing the residual stress of the C-fiber reinforced resin based composite material can be used for not only ensuring that no extra residual stress is increased in layer-by-layer corrosion, but also accurately obtaining residual stress of a large-size test piece in different depths. The method is applied to the testing field of the C-fiber reinforced resin based composite material.
Description
Technical field
The present invention relates to a kind of method of the C of mensuration fiber-reinforced resin matrix compound material.
Background technology
Compound substance is one of material the most widely of current use.Especially C fiber-reinforced resin matrix compound material, be space flight and aviation enterprise use material that proportion is maximum one of.The existence of unrelieved stress can cause deforming in the production of C fiber-reinforced resin matrix compound material and use procedure, thereby bring in stress redistribution, assembling difficulty and use procedure, the problems such as secondary deformation occurs.In compound substance, safe handling and the life-span thereof of the distribution of unrelieved stress on product has very big impact, determines that the distribution of unrelieved stress in compound substance has great importance to guaranteeing that the safety of compound substance is on active service.
The detection method of unrelieved stress is mainly divided into and damages detection method and lossless detection method; Damaging detection method mainly comprises: Blind Hole Method, the method such as cutting method, layer stripping method, indentation method radially, damaging detection method generally refers to and takes disruptive method that unrelieved stress is discharged, discharge by detecting unrelieved stress the overstrain producing, obtain as calculated the method for target area unrelieved stress.Be a kind of disruptive method owing to damaging detection method, not only can in test specimen, produce extra stress, and the destruction of test specimen original-shape is also reduced the precision of measuring test specimen unrelieved stress.Lossless detection method mainly comprises: the methods such as X-ray diffraction method, neutron diffraction method, foil gauge embedment method, moiréinterferometry, Raman spectroscopy, can not cause change to the stress distribution of test specimen because it is untouchable, can Specimen Shape not produced destruction and is widely used simultaneously.Because the measuring accuracy of the methods such as foil gauge embedment method, moiréinterferometry, Raman spectroscopy is not high, so residual stress analysis result is being required strict in the situation that, generally seldom use.The penetration capacity of X ray is limited simultaneously, can only measure the unrelieved stress on test specimen top layer, although neutron diffraction method can overcome the above problems, this kind of method needs neutron generator, not only expensive but also can produce certain radiation, so generally apply and be restricted in engineering.
Summary of the invention
The present invention will solve existing X ray to measure the unrelieved stress that can only measure test specimen C fiber-reinforced resin matrix compound material top layer that the method for C fiber-reinforced resin matrix compound material exists, and can not measure the technical matters of the unrelieved stress of each degree of depth, thereby provide a kind of method of measuring C fiber-reinforced resin matrix compound material with X-ray diffraction.
A kind of method with X-ray diffraction mensuration C fiber-reinforced resin matrix compound material of the present invention is to carry out according to the following steps:
One, get the test specimen of C fiber-reinforced resin matrix compound material, after 40～80 microns of hcl corrosions that is 30%～98% by concentration by flat surface, surface is cleaned with deionized water;
Two, by x-ray stress analyzer after initialization, high pressure preheating, put into the C fiber-reinforced resin matrix compound material after step 1 corrosion, then carry out single exposure and go back end, multiexposure, multiple exposure test, then calculate, draw the unrelieved stress of C fiber-reinforced resin matrix compound material;
Three, repeating step one and step 2, to the unrelieved stress of C fiber-reinforced resin matrix compound material that obtains each degree of depth, complete the mensuration of C fiber-reinforced resin matrix compound material;
The model of described x-ray stress analyzer is PROTOLXRDGANTRY.
The present invention includes following beneficial effect:
1, adopt the present invention to measure the unrelieved stress of C fiber-reinforced resin matrix compound material, can guarantee successively to corrode not to increase extra unrelieved stress, can obtain again the unrelieved stress of System for Large-scale Specimen different depth accurately;
2, to have assay method easy in the present invention, and measurement result is advantage accurately.
Embodiment
Embodiment one: a kind of method with X-ray diffraction mensuration C fiber-reinforced resin matrix compound material of present embodiment is to carry out according to the following steps:
One, get the test specimen of C fiber-reinforced resin matrix compound material, after 40～80 microns of hcl corrosions that is 30%～98% by concentration by flat surface, surface is cleaned with deionized water;
Two, by x-ray stress analyzer after initialization, high pressure preheating, put into the C fiber-reinforced resin matrix compound material after step 1 corrosion, then carry out single exposure and go back end, multiexposure, multiple exposure test, then calculate, draw the unrelieved stress of C fiber-reinforced resin matrix compound material;
Three, repeating step one and step 2, to the unrelieved stress of C fiber-reinforced resin matrix compound material that obtains each degree of depth, complete the mensuration of C fiber-reinforced resin matrix compound material.
Present embodiment comprises following beneficial effect:
1, adopt present embodiment to measure the unrelieved stress of C fiber-reinforced resin matrix compound material, can guarantee successively to corrode not to increase extra unrelieved stress, can obtain again the unrelieved stress of System for Large-scale Specimen different depth accurately;
2, to have assay method easy for present embodiment, and measurement result is advantage accurately.
Embodiment two: present embodiment is different from embodiment one: in step 1, concentration of hydrochloric acid is 75%.Other is identical with embodiment one.
Embodiment three: present embodiment is different from embodiment one or two: corrode 60 microns in step 1.Other is identical with embodiment one or two.
By following verification experimental verification beneficial effect of the present invention:
Test one: a kind of method with X-ray diffraction mensuration C fiber-reinforced resin matrix compound material of this test is to carry out according to the following steps:
One, get the test specimen of C fiber-reinforced resin matrix compound material, after 60 microns of hcl corrosions that is 75% by concentration by flat surface, surface is cleaned with deionized water;
Two, by x-ray stress analyzer after initialization, high pressure preheating, put into the C fiber-reinforced resin matrix compound material after step 1 corrosion, then carry out single exposure and go back end, multiexposure, multiple exposure test, then calculate, draw the unrelieved stress of C fiber-reinforced resin matrix compound material;
Three, repeating step one and step 2, to the unrelieved stress of C fiber-reinforced resin matrix compound material that obtains each degree of depth, complete the mensuration of C fiber-reinforced resin matrix compound material.
Adopt the unrelieved stress of this test determination C fiber-reinforced resin matrix compound material, can guarantee successively to corrode not to increase extra unrelieved stress, can obtain again the unrelieved stress of System for Large-scale Specimen different depth accurately; Also have assay method easy, measurement result is advantage accurately simultaneously.
Claims (3)
1. measure a method for C fiber-reinforced resin matrix compound material with X-ray diffraction, the method that it is characterized in that measuring with X-ray diffraction C fiber-reinforced resin matrix compound material is to carry out according to the following steps:
One, get the test specimen of C fiber-reinforced resin matrix compound material, after 40～80 microns of hcl corrosions that is 30%～98% by concentration by flat surface, surface is cleaned with deionized water;
Two, by x-ray stress analyzer after initialization, high pressure preheating, put into the C fiber-reinforced resin matrix compound material after step 1 corrosion, then carry out single exposure and go back end, multiexposure, multiple exposure test, then calculate, draw the unrelieved stress of C fiber-reinforced resin matrix compound material;
Three, repeating step one and step 2, to the unrelieved stress of C fiber-reinforced resin matrix compound material that obtains each degree of depth, complete the mensuration of C fiber-reinforced resin matrix compound material.
2. a kind of method of measuring C fiber-reinforced resin matrix compound material with X-ray diffraction according to claim 1, is characterized in that in step 1, concentration of hydrochloric acid is 75%.
3. a kind of method of measuring C fiber-reinforced resin matrix compound material with X-ray diffraction according to claim 1, is characterized in that corroding 60 microns in step 1.
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| CN201410166088.4A CN103901063A (en) | 2014-04-23 | 2014-04-23 | Method for testing C-fiber reinforced resin based composite material by virtue of X-ray diffraction |
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| CN201410166088.4A CN103901063A (en) | 2014-04-23 | 2014-04-23 | Method for testing C-fiber reinforced resin based composite material by virtue of X-ray diffraction |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155036A (en) * | 2014-08-29 | 2014-11-19 | 哈尔滨工业大学 | Method for detecting residual stress of large carbon fiber reinforced resin-based composite component through X-rays |
| CN108375595B (en) * | 2018-02-27 | 2020-09-01 | 北京工商大学 | Method for testing distribution of surface stress of metal workpiece along depth direction |
| CN111664978A (en) * | 2020-05-28 | 2020-09-15 | 哈尔滨工业大学 | Residual stress characterization method for curved surface special-shaped part |
| CN111948089A (en) * | 2020-08-06 | 2020-11-17 | 山东非金属材料研究所 | Method for determining resin content in fiber-reinforced organic silicon resin composite material |
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| EP0242425B1 (en) * | 1986-04-21 | 1992-08-12 | Mitsubishi Jukogyo Kabushiki Kaisha | Method for evaluating residual fatigue life of mechanical parts |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155036A (en) * | 2014-08-29 | 2014-11-19 | 哈尔滨工业大学 | Method for detecting residual stress of large carbon fiber reinforced resin-based composite component through X-rays |
| CN108375595B (en) * | 2018-02-27 | 2020-09-01 | 北京工商大学 | Method for testing distribution of surface stress of metal workpiece along depth direction |
| CN111664978A (en) * | 2020-05-28 | 2020-09-15 | 哈尔滨工业大学 | Residual stress characterization method for curved surface special-shaped part |
| CN111664978B (en) * | 2020-05-28 | 2021-12-07 | 哈尔滨工业大学 | Residual stress characterization method for spherical special-shaped part |
| CN111948089A (en) * | 2020-08-06 | 2020-11-17 | 山东非金属材料研究所 | Method for determining resin content in fiber-reinforced organic silicon resin composite material |
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Application publication date: 20140702 |