Carbon fiber prepreg friction coefficient measuring device and using method thereof

Abstract

The invention provides a carbon fiber prepreg friction coefficient measuring device which comprises a motor, a lead screw sliding table, a heat preservation cover, a pressurizing device, a sliding block, a connecting rod, a clamp and a workbench, wherein the motor, the lead screw sliding table and the heat preservation cover are installed on the workbench; a heating device is fixed to the portion,in the heat preservation cover, of the workbench; a clamp is installed on the heating device; a second sample is fixed to the top of the clamp, a first sample is fixed to the lower surface of the sliding block through a first pressing plate, and the first sample is placed on the second sample; the pressurizing device is fixed on the sliding block and is provided with a pressure sensor; one end ofthe connecting rod is fixedly connected with the sliding block, and the other end extends out of the heat preservation cover and is fixedly connected with the force measuring sensor; the force measuring sensor is fixed on a sliding table of the lead screw sliding table; and the motor drives the sliding table of the lead screw sliding table to move. The device is easy to operate and small in occupied area, and the friction coefficient between the carbon fiber prepregs with different temperatures, different pressures, different relative movement speeds and different orientations can be measured.

Description

technical field [0001] The invention belongs to the technical field of friction detection, and in particular relates to a carbon fiber prepreg friction coefficient measuring device and an application method thereof. Background technique [0002] With the progress and development of science and technology, the application of composite materials in the aerospace field is becoming more and more extensive, especially the technologies of automatic tape laying and automatic wire laying, which have been developed rapidly due to their high molding efficiency and stable product quality. application. However, it is difficult to use automatic lay-up technology in the lay-up process of prepreg materials for composite components with complex structures (such as C-shaped stringers, etc.), which greatly reduces their production efficiency. In order to solve this problem, the thermo-compression molding process came into being. This process is to place and position the prepreg material for...

AI Technical Summary

Problems solved by technology

During the sliding process, friction occurs between the sealing strip support seat, the pressure plate and the guide rail, and the actual measured friction force is the sum of the two, resulting in a larger actual measurement result; (2) The pressure plate of this scheme is directly fixed on the side wall plate On the above, the compression between the pressure plate and the sample is changed by adjusting the height of the side wall plate. This design meets the design requirements in the field of high-temperature dynamic seal friction testing, but it cannot flexibly adjust the pressure between the samples, nor can it The pressure on the sample cannot be accurately measured, and it is not suitable for the actual needs of composite material processing

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