Device and method for synchronously testing force and deformation of solid material at high temperature

Abstract

The invention discloses a device and a method for synchronously testing force and deformation of a solid material at a high temperature, the device comprises a pressure testing machine, a high temperature furnace is arranged between vertical columns of the pressure testing machine, and a solid material test piece is placed in the high temperature furnace; the top and the bottom of the solid material test piece are respectively connected with a loading head and a pressure-bearing head through a loading connecting unit penetrating through the high-temperature furnace, the loading connecting unit is provided with a displacement meter, and the loading head is provided with a force sensor. According to the synchronous testing device, the real stress-strain relationship of the solid material at a constant high temperature can be obtained, and the real strain development rule of the solid material in a slow heating / cooling process under a constant load can also be obtained, so that an important means is provided for researching the high-temperature mechanical property of the solid material; therefore, technical support is provided for guaranteeing the full-life-cycle safe service of buildings / structures built by solid materials such as concrete, rocks and ceramics.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and in particular relates to a simultaneous testing device and testing method for force and deformation of solid materials under high temperature. Background technique [0002] Buildings / structures made of solid materials such as concrete, rock, and ceramics may be subjected to high temperatures caused by fire and geothermal heat during their service period. Grasping the mechanical properties of these solid materials at high temperatures is crucial to analyzing and evaluating the safe service of these buildings / structures throughout their life cycle. For this reason, the mechanical performance testing of solid materials at high temperature has attracted much attention. [0003] In the loading test of solid material at high temperature, due to the high temperature environment around the solid material specimen, extensometers, strain gauges, etc. usually cannot be directly used for the d...

AI Technical Summary

Problems solved by technology

However, this displacement includes the deformation of the bottom bearing steel plate, not the real deformation of the solid material specimen

In short, a simultaneous test device for force and deformation of solid materials at high temperatures that can eliminate the deformation of force-transmitting parts such as loading heads, conversion devices, and pressure plates is urgently needed to be developed.

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