GB/T 33099-2016Test methods of stiffness for dipped reinforcing material—Three-point bending (English PDF)

1 Scope

This standard specifies the use of two-point bending stiffness principle of three-point bending method to determine the stiffness of dipping skeleton material test method.

This standard is applicable to the determination of the stiffness of dipped rubber materials such as dipped cord cloth, dipped canvas and dipped cord.

2 normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article

Pieces. For undated references, the latest edition (including all modifications) applies to this document.

Rubber - Physical test methods - General procedures for the preparation and adjustment of specimens GB/T Representation and Judgment of Numerical Correction Rule and Limit Value of GB/T 8170

GB/T 32110 Terms and definitions of dipping skeleton materials

3 terms and definitions

The terms and definitions defined in GB/T 32110 apply to this document.

4 principle

The test specimen was placed on two support plates (rods) with a defined radius of curvature. The pressure plate (rod) of the test apparatus was placed at 25 mm/min

Speed down, the test sample will be pressed between the two support; record the maximum force required to bend the sample, the force value is the dipping skeleton material hard

The representation of the stiffness, in units of Newton (N).

5 instruments and tools