GB/T 30315-2013Test method for reciprocating flex fatigue of dipped cords (English PDF)

1 Scope

This standard specifies the use of rubber products dipped cords under a certain load reciprocating fatigue after bending the cord fatigue resistance test subject method.

This standard applies to dipped polyester (PET) cords, dipped polyamide (nylon) Determination cord fatigue resistance properties, can also be used dipped polyester

Yarn, cord and dipped polyamide yarns, cord Determination of resistance to fatigue properties.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein

Member. For undated references, the latest edition (including any amendments) applies to this document.

GB/T 6529 Textiles Standard conditioning and testing atmosphere

GB/T 8170 repair value expressed about the rules and limit values and judgment

3 Test principle

Reciprocating Flexing fatigue test specimen is dipped cord bend radius greater than the minimum radius of curvature (see Appendix A), at certain load conditions

Next, the two freely rotatable guide roller A, B at the same time as the upper and lower reciprocating motion, so that the cord was measured by the bending fatigue resistance cord reciprocating fatigue after

The method of labor performance. Cord fatigue resistance can be broken when each cord Flexing fatigue reciprocating number of times that can also be used subject to certain

The number of reciprocating Flexing fatigue cord breaking strength retention to represent.

4 instruments and equipment