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Device and method for testing wet expansion coefficient of carbon fiber composite material

A technology of moisture expansion coefficient and composite materials, applied in the direction of using material absorption and weighing, etc., to achieve the effect of wide test range, high resolution and fast test speed

Active Publication Date: 2014-03-26
SHANGHAI COMPOSITES SCI & TECH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0008] The purpose of the present invention is to overcome the technical problems existing in the wet deformation test in the above-mentioned prior art, and provide a carbon fiber composite material wet expansion coefficient test device and its test method

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  • Device and method for testing wet expansion coefficient of carbon fiber composite material
  • Device and method for testing wet expansion coefficient of carbon fiber composite material

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Embodiment 1

[0033] This embodiment relates to a carbon fiber composite material wet expansion coefficient testing device, such as figure 1 As shown, it consists of the basic unit (high-resolution displacement sensor 4 and force sensor 1), water steam furnace, humidity controller, constant temperature water bath, mass flow meter, etc., among which the thermomechanical analyzer (TMA) is a mature equipment (German resistance Chi), the basic unit is composed of displacement sensor 4, force sensor 1, test chamber (including test furnace 3), push rod, etc. TMA equipment has the characteristics of small measurement sample, wide test range, and high deformation resolution, which fully meets the requirements of carbon fiber composite materials. According to the requirements of the deformation test, this embodiment provides the humidity atmosphere during the test sample 2 by integrating a water steam furnace and equipped with a high-precision humidity sensor in the test room of the TMA equipment.

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Abstract

The invention discloses a device and a method for testing the wet expansion coefficient of a carbon fiber composite material. The main body of the device adopts a thermal mechanical analyzer (TMA), the device is improved based on the TMA and equipped with a set of humidity controller for controlling humidity precision, the humidity controller comprises a water steam boiler and a humidity sensor, and the humidity control range is within 5-100 percent; within a certain humidity range, a wet deformation test is performed by using a displacement sensor and a mechanical sensor of the TMA. The device for testing the wet deformation has the characteristics of high testing speed, wide testing range, high resolution ratio and the like, and the requirement for the wet deformation test of various composite materials can be satisfied.

Description

technical field [0001] The invention relates to a testing device and a testing method for the wet expansion coefficient of a carbon fiber composite material. Background technique [0002] The optical and remote sensing satellite adopts a three-axis stable attitude control method, and the image scanning is a multi-channel two-dimensional scanning imaging, which requires high scanning accuracy and imaging quality, and has the following characteristics: [0003] ① A variety of payloads, and the payloads are large in size and heavy in weight, and the installation requirements of the payloads are complex, which puts forward high requirements on the dimensional deformation control of the star; [0004] ② The installation accuracy and imaging accuracy of the payload are high. For example, the XX-4 satellite adopts a three-axis stable attitude control method, and the satellite puts forward higher requirements for the imaging accuracy and image resolution of the payload. The accurac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/02
Inventor 郝旭峰诸静王竹居建国
Owner SHANGHAI COMPOSITES SCI & TECH CO LTD
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