Multi-Angle Loading Indenter System for Brazilian Splitting Tests

Abstract

The invention relates to a test system and discloses a multi-angle loading pressure head system for a Brazilian split test to overcome the defect of existing pressure heads that line loading is hard to achieve in a Brazilian split test. A first guide track groove is formed in an upper pedestal, a plurality of support pillars are symmetrically arranged on the two sides of the upper pedestal, and a second guide track groove and blind holes matched with the support pillars are formed in a lower pedestal. Each loading pressure head comprises an arc-shaped loading part and a base. The arc-shaped loading part of the first loading pressure head and the arc-shaped loading part of the second loading pressure head are both matched with a Brazilian disc specimen in a Brazilian split test, the base of the first loading pressure head is matched with the first guide track groove, and the base of the second loading pressure head is matched with the second guide track groove. A positioning support is L-shaped and comprises a positioning part and a fixing part for fixing the positioning support, wherein the outer side face of the positioning part is used for limiting the positions of the loading pressure heads, and the positioning support is fixed into the first guide track groove or the second guide track groove through a screw and a movable support. The system is used for conducting a Brazilian split test.

Description

technical field [0001] The invention relates to a test system, in particular to an indenter system for a Brazilian split test. Background technique [0002] The Brazilian disc splitting test (Brazilian test) is widely used in rock mechanics and engineering, and is usually used to measure the tensile strength, elastic modulus and fracture toughness of rocks. Laboratory test is an important means of conducting scientific research and discovering problems. However, in the process of carrying out the Brazilian disc splitting test in the laboratory, due to the influence of various conditions and factors, such as the difference between the pressure plate and the Brazilian disc, The stiffness and strength of the backing plate (strip) between them, as well as the size and shape of the backing plate, etc., the obtained results usually cannot obtain enough information needed to analyze the problem, and cannot even reflect the essence of the problem, which limits the scope of this rese...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the shortcoming that the indenter of the prior art can only achieve single loading with a specific angle of surface contact when performing a Brazilian split test, and it is difficult to achieve line load loading, and provides a kind of indenter for Brazil Multi-angle loading indenter system for splitting test, the indenter system can quickly position the specimen and apply different forms of surface load at multiple angles when performing the Brazilian splitting test

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