Testing method for room temperature tensile properties of continuous fiber reinforced ceramic matrix composites

A technology of continuous fibers and composite materials, applied in the analysis of materials, strength characteristics, and the use of stable tension/pressure to test the strength of materials, etc. The effect of improving the use value

Active Publication Date: 2021-02-23
中国国检测试控股集团淄博有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] As a porous ceramic material, continuous fiber reinforced ceramic matrix composites inevitably have obvious defects such as holes and cracks in the process of sample preparation. The phenomenon that qualified parts cannot be used, the sample re-preparation not only increases the cost, but also prolongs the test cycle

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  • Testing method for room temperature tensile properties of continuous fiber reinforced ceramic matrix composites

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Experimental program
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Embodiment 1

[0030] This embodiment provides a method for testing the tensile properties of continuous fiber reinforced ceramic matrix composites at room temperature, including the following steps:

[0031] 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.

[0032] 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 requirements.

[0033] Along the thickness direction of the continuous fiber-reinforced ceramic matrix composite, the continuous fiber-reinforced ceramic matrix composite remains or approximately remains unchanged, that is, the original state is kept as far as...

Embodiment 2

[0070] This embodiment provides a method for testing the tensile properties of continuous fiber reinforced ceramic matrix composites at room temperature, including the following steps:

[0071] 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.

[0072] 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 requirements.

[0073] Along the thickness direction of the continuous fiber-reinforced ceramic matrix composite material, the continuous fiber-reinforced ceramic matrix composite material remains or approximately remains unchanged, that is, the original state...

Embodiment 3

[0113] This embodiment provides a method for testing the tensile properties of continuous fiber reinforced ceramic matrix composites at room temperature, including the following steps:

[0114] 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.

[0115] 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 requirements.

[0116] Along the thickness direction of the continuous fiber-reinforced ceramic matrix composite material, the continuous fiber-reinforced ceramic matrix composite material remains or approximately remains unchanged, that is, the original state...

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Abstract

The invention relates to a method for detecting the tensile properties of a continuous fiber reinforced ceramic matrix composite material at room temperature. Cutting and sampling according to the main direction of the continuous fiber reinforced ceramic matrix composite material has a very positive effect on accurately evaluating the performance of the material. The sample The width-thickness ratio is 1.65-1.86:1. The sample with this width-thickness ratio can effectively maintain the effective element of the sample fiber and ensure high accuracy of the measured value. Even if there are defects in the width or thickness direction of the sample, it can be processed again on the basis of satisfying the width-thickness ratio to improve the use value of the sample. Then paste the reinforcing sheet on the sample, install the displacement gauge or paste the strain gauge in the gauge length of the sample, and clamp the sample to the chuck of the testing machine; load and stretch the sample, and collect the test data , for obtaining the corresponding tensile property data of continuous fiber reinforced ceramic matrix composites through data processing. The entire operation method is scientific and reasonable, and has a very positive effect on accurately evaluating the performance of the material.

Description

technical field [0001] The invention relates to the technical field of ceramic mechanics detection, in particular to a method for detecting the tensile properties 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 tensile properties of continuous fiber-reinforced ceramic matrix composites, and the data obtained according to different standards are different. At the same time, the different sampling directions of continuous fiber-reinforced ceramic materials with different structures also cause deviations in test results. big. These phenomena have disadvantages for accurately and detailedly characterizing the performance of materials, and thus easily bring quality risks to products. [0003] As a porous ceramic material, continuous fiber reinforced ceramic matrix composites inevitably have obvious defects such as holes and cracks in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/08G01N1/28
CPCG01N1/286G01N3/08G01N2001/2873G01N2203/0017G01N2203/0067G01N2203/0075G01N2203/0262G01N2203/0268
Inventor 吕艳红翟萍訾文娟李东升夏卫亮孙高梅琳周明霞张磊
Owner 中国国检测试控股集团淄博有限公司
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