Device and method for controlling thicknesses of reinforced composite compressed samples

Abstract

The invention provides a device and method for controlling the thicknesses of reinforced composite compressed samples. Upper molds and lower molds are connected through vertical connecting holes. Accommodating grooves used for storing the reinforced composite compressed samples and thickness control grooves used for storing thickness control gaskets are formed in the lower molds, so that the totalthicknesses of the compressed samples and reinforcing pieces adhering to the compressed samples are controlled, and the overall thicknesses of the compressed samples are kept uniform and consistent.Plate-like alignment pieces are connected to the outer end faces of the lower molds in the wide direction through horizontal connecting holes, so that the outer end faces of the compressed samples arerestrained. L-shaped plate-like pieces and linear plate-like pieces are connected to the outer end faces of the lower molds in the length direction. The upper reinforcing pieces and the lower reinforcing pieces located at the same ends of the compressed samples are restrained through the linear plate-like pieces. The device and method for controlling the thicknesses of the reinforced composite compressed samples have the advantages that the thicknesses are controlled to be uniform, the sizes are accurate, one-time formation is achieved, and redundant structural adhesives in a test area can beconveniently removed.

Description

technical field [0001] The invention relates to the technical field of glass fiber reinforced composite materials, in particular to a device and method for controlling the thickness of a reinforced composite material, especially a compressed sample block of a glass fiber reinforced composite material. Background technique [0002] When testing the compression properties of glass fiber reinforced composite materials, the uniformity and consistency of the overall thickness of the compressed sample block directly affect the accuracy of the test data and the evaluation of the test results. At present, the compressed samples are mainly prepared manually, and the four reinforcing sheets are bonded to the front and back sides of the compressed sample block through the method of scribing and aligning, and the distance between the reinforcing sheets between the front and the front ends and the reinforcement sheets between the reverse and the reverse ends is ensured. Then fix the comp...

AI Technical Summary

Problems solved by technology

The main disadvantages of the glass fiber reinforced composite material compression sample made by the traditional method are: ⑴The requirements for manual operation are relatively high, and the position of the reinforcement sheet on the surface of the compression sample is easy to deviate, and it is difficult to be symmetrical; ⑵Using F-type fixtures or other fixtures Stress concentration is easy to form when the sample block is added, resulting in inconsistent thickness between the attached area and the non-applied area; (3) the overall thickness of the sample block is difficult to ensure uniformity and consistency; (4) the distance between the reinforcement sheets at both ends of the front and the front and the reinforcement sheets at both ends of the back and the back is inconsistent , affecting the bonding of strain gauges

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