A film test loading unit

Abstract

The invention provides a film test loading unit comprising a substrate, a motor, a worm gear-worm assembly and a clamping turntable, wherein the motor and the worm gear-worm assembly are disposed on the substrate, after direction conversion by the worm gear-worm assembly and load enlarge, the rotation of the motor output drives the clamping turntable to rotate so as to drive a film fixed on a clamping portion to be turned up and outward; wherein the vertical section of the clamping turntable is a 45-degree sector, one side of a worm gear is provided with a groove matching the outer shape of the vertical section of the clamping turntable, and a part of the clamping portion can be inserted into the groove, so that the worm gear can drive the clamping turntable to rotate.

Description

technical field [0001] The invention relates to the field of film material performance testing, in particular to the tensile test of soft base films. Background technique [0002] In recent years, soft-based thin film materials have been widely used in electronics, biology, aerospace, chemical and other fields due to their mature manufacturing process and excellent properties such as high flexibility and high ductility. Therefore, this structure has gradually become the focus of scholars' research. Most of the relevant work at this stage is aimed at the unidirectional loading of the membrane-based structure. However, during the service process, the membrane-based structure is often in a more complex loading environment, and the simple uniaxial load can no longer simulate its true stress. state. Therefore, in experiments and tests, the introduction of biaxial loading can make the mechanical behavior of the membrane-based structure more accurately expressed, which is very im...

AI Technical Summary

Problems solved by technology

[0005] In short, refer to figure 1 As shown, the existing film stretching and loading equipment has the following problems: a. translational stretching causes the overall size of the equipment to be too large, and it is difficult to place it on the observation platform of the microscope; b. the cylindrical turntable of the disclosed rotating stretching device The size is large, and it is difficult to keep the contact surface of the fixed test piece horizontal during the process of fixing and installing the test piece, which is mainly operated by experience; c. It is difficult to clamp the test piece after it is fixed; d. For the samples to be tested with different elastic modulus and thickness , it is necessary to replace the turntable with different diameters as needed, and the operation process is cumbersome and time-consuming

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