Dual axis bending test fixture testing purpose

Dual axis bending test fixture testing purpose

Dual axis bending test fixture testing purpose

Double axis bending test fixture----GB30367-2025

Double axis bending test fixtureGB 30367-2025The standard is used to determine the biaxial bending strength of dental ceramic materials, using a piston-The "three ball" test method (also known as the punch pressure three ball test).

The core structure and requirements of this fixture are as follows:

Support system: consisting of three diameters(4.5±2)mmComposed of hard steel balls120The angle is evenly distributed at a diameter of(11±1)mmThe support ring serves as the support point for the specimen.

Loading method: The load is loaded through a diameter of(1.4±0.2)mmApply a flat punch (piston) to the center of the specimen to ensure stress concentration in the central area.

Sample placement: The sample should be placed concentric on three supporting balls to ensure loading symmetry and testing accuracy.

Uniformization of contact pressure: A non rigid material film (such as thick) should be placed between the supporting ball and the specimen, and between the specimen and the loading head0.05 mmPolyethylene film is used to evenly distribute contact pressure and reduce local stress concentration.

Experimental equipment coordination: It needs to be used in conjunction with a universal mechanical testing machine, and the crosshead speed is set to(1±0.5)mm/minThe accuracy of load measurement needs to reach ±0.1 N.

Double axis bending test fixture----GB30367-2025

Double axis bending test fixtureGB 30367-2025The standard is used to determine the biaxial bending strength of dental ceramic materials, using a piston-The "three ball" test method (also known as the punch pressure three ball test).

The core structure and requirements of this fixture are as follows:

Support system: consisting of three diameters(4.5±2)mmComposed of hard steel balls120The angle is evenly distributed at a diameter of(11±1)mmThe support ring serves as the support point for the specimen.

Loading method: The load is loaded through a diameter of(1.4±0.2)mmApply a flat punch (piston) to the center of the specimen to ensure stress concentration in the central area.

Sample placement: The sample should be placed concentric on three supporting balls to ensure loading symmetry and testing accuracy.

Uniformization of contact pressure: A non rigid material film (such as thick) should be placed between the supporting ball and the specimen, and between the specimen and the loading head0.05 mmPolyethylene film is used to evenly distribute contact pressure and reduce local stress concentration.

Experimental equipment coordination: It needs to be used in conjunction with a universal mechanical testing machine, and the crosshead speed is set to(1±0.5)mm/minThe accuracy of load measurement needs to reach ±0.1 N.