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Detection method of room-temperature compressive property of continuous fiber-reinforced ceramic-based composite material

A continuous fiber and composite material technology, which is applied in the direction of strength characteristics, material analysis, and the use of stable tension/pressure to test the strength of materials, etc., can solve the problem of huge differences in fiber weaving direction performance, inability to distinguish main directions, and large errors in test results, etc. problems, to achieve the effect of high accuracy of measured values, convenient processing, and uniformity

Inactive Publication Date: 2018-11-06
中国建材检验认证集团淄博有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, there are many test methods and standards for the room temperature compression properties of continuous fiber reinforced ceramic matrix composites, and the data obtained according to different standards are different. The larger the size, the greater the risk of inhomogeneity, and the greater the error of test results. At the same time, fiber reinforcements in fiber-reinforced ceramic matrix composites have different structures such as acupuncture, stitching, 2.5D, and three-dimensional. The strength is only 40MPa, while the latitudinal compressive strength is as high as 160MPa. If the main direction is not distinguished, it will inevitably cause extremely adverse consequences for the accurate evaluation of material properties.
Therefore, the above-mentioned phenomena have disadvantages for accurately and detailedly characterizing the performance of materials, and thus easily bring quality risks to products, and urgently need to be improved.

Method used

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  • Detection method of room-temperature compressive property of continuous fiber-reinforced ceramic-based composite material

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Effect test

Embodiment 1

[0025] This embodiment provides a method for detecting the room-temperature compression performance of continuous fiber-reinforced ceramic matrix composites, including the following steps:

[0026] S1. Determine the cutting direction when sampling according to the weaving direction of the fiber reinforcement of the continuous fiber-reinforced ceramic matrix composite material, and cut and process the continuous fiber-reinforced ceramic matrix composite material to obtain a sample. The sample is cylindrical or cuboid, cylindrical Dimensions of a rectangular sample diameter × height = 10 (± 0.2) mm × 25 (± 0.5) mm, dimensions of a cuboid sample length × width × thickness = 10 (± 0.2) mm × 10 (± 0.2) mm × 25 (± 0.2) mm 0.5)mm, parallelism and perpendicularity are ≤0.01mm.

[0027] When preparing samples, cut them in strict accordance with the main directions of continuous fiber-reinforced ceramic composites (such as axial, radial, normal, etc.), and the fiber direction and layup ...

Embodiment 2

[0063] This embodiment provides a method for detecting the room-temperature compression performance of continuous fiber-reinforced ceramic matrix composites, including the following steps:

[0064] S1. Determine the cutting direction when sampling according to the weaving direction of the fiber reinforcement of the continuous fiber-reinforced ceramic matrix composite material, and cut and process the continuous fiber-reinforced ceramic matrix composite material to obtain a sample. The sample is cylindrical or cuboid, cylindrical The size of the sample is diameter × height = 10mm × 25mm, the size of the cuboid sample is length × width × thickness = 10mm × 10mm × 25mm, and the parallelism and perpendicularity are both 0.01mm.

[0065] When preparing samples, cut them in strict accordance with the main directions of continuous fiber-reinforced ceramic composites (such as axial, radial, normal, etc.), and the fiber direction and layup direction are consistent with the test requirem...

Embodiment 3

[0101] This embodiment provides a method for detecting the room-temperature compression performance of continuous fiber-reinforced ceramic matrix composites, including the following steps:

[0102] S1. Determine the cutting direction when sampling according to the weaving direction of the fiber reinforcement of the continuous fiber-reinforced ceramic matrix composite material, and cut and process the continuous fiber-reinforced ceramic matrix composite material to obtain a sample. The sample is cylindrical or cuboid, cylindrical Dimensions of rectangular parallelepiped sample diameter × height = 10.2mm × 24.5mm, length × width × thickness of cuboid specimen = 10.2mm × 9.8mm × 24.5mm, parallelism and perpendicularity are ≤0.01mm.

[0103] When preparing samples, cut them in strict accordance with the main directions of continuous fiber-reinforced ceramic composites (such as axial, radial, normal, etc.), and the fiber direction and layup direction are consistent with the test req...

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Abstract

The invention relates to a detection method of a room-temperature compressive property of a continuous fiber-reinforced ceramic-based composite material. The detection method comprises the following steps: cutting in the main direction of the continuous fiber-reinforced ceramic-based composite material for sampling, wherein the cutting direction has a very positive effect on accurate evaluation onthe properties of the material; the sample with the size guarantees convenient and flexible testing, ensures the force uniformity of the material, and is convenient and fast to process; then, placingthe sample on a pressure bearing disc of a testing machine; loading the sample until the sample is broken or a predetermined deformation amount is reached, collecting detection data, and processing the data to obtain corresponding compressive property data of the composite material. A whole operation method is scientific, reasonable, simple, easy to implement, fast and effective; an actual measured value is high in accuracy, so that the properties of the material can be accurately evaluated, thus the quality risks of a product are accurately assessed, introduction of corresponding measures for avoiding the risks by a company is facilitated, and a devastating impact of improper product quality evaluation on the company is avoided.

Description

technical field [0001] The invention relates to the technical field of ceramic mechanics detection, in particular to a method for detecting the compression performance of continuous fiber reinforced ceramic matrix composite materials at room temperature. Background technique [0002] At present, there are many test methods and standards for the room temperature compression properties of continuous fiber reinforced ceramic matrix composites, and the data obtained according to different standards are different. The larger the size, the greater the risk of inhomogeneity, and the greater the error of test results. At the same time, fiber reinforcements in fiber-reinforced ceramic matrix composites have different structures such as acupuncture, stitching, 2.5D, and three-dimensional. The strength is only 40MPa, while the latitudinal compressive strength is as high as 160MPa. If the main direction is not distinguished, it will inevitably cause extremely adverse consequences for th...

Claims

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Application Information

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IPC IPC(8): G01N3/08G01N1/28G01N1/44
CPCG01N1/286G01N1/44G01N3/08G01N2001/2873G01N2203/0019G01N2203/0085G01N2203/0262G01N2203/0266
Inventor 吕艳红翟萍李伶李东升周明霞夏卫亮訾文娟孙高梅琳张磊
Owner 中国建材检验认证集团淄博有限公司
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