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Device and method for in-plane shear test of ceramic-based fiber bundle composite material

A composite material and test method technology, applied in the field of ceramic matrix fiber bundle composite material in-plane shear test device, to achieve the effects of reducing processing cost, improving success rate, and facilitating centering and installation

Active Publication Date: 2021-10-26
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, for the shear mechanical test of ceramic-based fiber bundle composites, such as ASTM D7078, C1292-16, D3518, D4255, D5379, D2344, D5448, D3846-08, etc. for unidirectional composites. Not applicable

Method used

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  • Device and method for in-plane shear test of ceramic-based fiber bundle composite material
  • Device and method for in-plane shear test of ceramic-based fiber bundle composite material
  • Device and method for in-plane shear test of ceramic-based fiber bundle composite material

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Embodiment Construction

[0056] Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0057] This embodiment provides an in-plane shear test device for a ceramic-based fiber bundle composite material, including: an in-plane shear sample, an in-plane shear sample centering sample preparation device, and an in-plane shear fixture.

[0058] Such as figure 1 As shown, the in-plane shear specimen is composed of sheet-shaped ceramic matrix fiber bundle composites 1 (see figure 2 ), two reinforcement sheets 2 and two cover plates 3; if image 3 As shown, one end of the reinforcing sheet 2 is designed with a stepped structure 201; the reinforcing sheet 2 is made of light acrylic material; the sheet-shaped ceramic-based fiber bundle composite material 1 is pasted on the stepped structure of the reinforcing sheet by epoxy glue 4 201 ; the cover plate 3 is pasted on the upper surface of the sheet-shaped ceramic-based fiber bundle compos...

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Abstract

The invention relates to an in-plane shear test device and method for a ceramic-based fiber bundle composite material, including an in-plane shear sample, an in-plane shear sample centering sample preparation device, an in-plane shear fixture and an observation device; The internal shear sample is composed of a sheet-shaped ceramic-based fiber bundle composite material, two reinforcement sheets and two cover plates; the in-plane shear sample centering sample preparation device includes a base plate and an L-shaped centering corner block, and The cutting clamp has two groups, including the clamping head, the clamp body, the clamp push plate, the clamping handle and the limit cover. The left and right clamping cavities are fixed, and the middle part of the sheet-shaped ceramic-based fiber bundle composite material is exposed between the two fixture bodies. The industrial camera can photograph the exposed position of the middle part of the sheet-shaped ceramic-based fiber bundle composite material. The invention has the advantage of being able to realize the measurement of the in-plane shear stress-strain data of the ceramic matrix fiber bundle composite material.

Description

technical field [0001] The invention belongs to the field of mechanical behavior tests of composite materials, and in particular relates to an in-plane shear test device and method for ceramic-based fiber bundle composite materials. Background technique [0002] Braided ceramic matrix composites have good temperature resistance, high specific strength, low density and strong designability. They are the preferred materials for advanced aero-engine hot end parts and have broad application prospects. [0003] The main load-bearing unit of the braided ceramic matrix composite is the inner yarn part, that is, the ceramic matrix fiber bundle composite. Braided ceramic matrix composite components are not only subjected to tensile loads but also shear loads during service. Therefore, the basic load-bearing unit of braided ceramic matrix composites - ceramic matrix fiber bundle composites will also bear the effects of tensile and shear loads. As an anisotropic material, ceramic-bas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/24G01N3/04
CPCG01N3/04G01N3/24
Inventor 于国强宋迎东高希光谢楚阳杜金康刘晨阳贾蕴发
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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