Tire composite material thermal expansion coefficient measuring system

Abstract

The invention relates to the field of tire composite material thermodynamic property research, and provides a tire composite material thermal expansion coefficient measurement system, which comprises a main body, the heating box is arranged in the main body; the heating pipe is mounted on the side wall of the heating box; the measuring table is arranged at the bottom of the heating box; the sample is arranged on the measuring table; the front DIC displacement measuring mechanism and the rear DIC displacement measuring mechanism are installed on the heating box. A main view angle image and a top view angle image of a sample along with temperature change can be collected in real time, and the linear expansion coefficient and the volume expansion coefficient of the sample are obtained accordingly. According to the system, a unique rotary descending mechanism and an electromagnetic retarding device are designed, so that the safety of the equipment is greatly improved, and the damage to the DIC displacement measuring mechanism when the door of the heating box is opened and closed can be effectively avoided. The sample of the system simulates real tire parameters, and the tire structure design can be better guided by analyzing the influence of the types and arrangement modes of the cords on the thermal expansion coefficient of the tire composite material.

Description

technical field [0001] The invention relates to the field of research on the thermodynamic properties of tire composite materials, in particular to a system for measuring the thermal expansion coefficient of tire composite materials. Background technique [0002] Affected by the tire material and the force, the tire will generate a lot of heat during the repeated driving process, causing problems such as thermo-oxidative aging and strength reduction, and the tire expands due to heat, which will generate additional stress and strain, which will change the tire's stress and deformation. It affects the overall performance of the tire, aggravates tire damage, and endangers personal safety. Therefore, it is very important to study the thermodynamic properties of tire materials, especially the thermal expansion properties of tire materials. [0003] The coefficient of thermal expansion is a characterization of thermal expansion performance, which is quantitatively characterized b...

AI Technical Summary

Problems solved by technology

[0005] At present, there is no measurement device for the thermal expansion coefficient of tire composite materials, which cannot analyze the linear expansion coefficient and volume expansion coefficient of tire composite materials, and thus cannot accurately guide the configuration of tire materials, which ultimately affects driving safety.

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