Flex-Cracking Resistance Tester YG(B)542B

[Instrument Name]：Flex-Cracking Resistance Tester

[Scope of Application]:

Tests the resistance of coated fabrics to repeated flexing damage, providing data to assist in fabric improvement.

[Test Method]: A rectangular strip of coated fabric is wrapped around two opposing cylinders, forming a cylindrical shape. One cylinder reciprocates along its axis, causing the coated fabric cylinder to alternately compress and relax, thereby inducing folding in the specimen. This folding action continues until a predetermined number of cycles is reached or visible damage appears on the specimen.

[Relevant Standards]: BS 3424 P9, ISO 7854, GB/T 12586, etc.

[Technical Specifications]:

1. Clamps: 10 sets

2. Speed: 8.3 Hz ± 0.4 Hz (498 ± 24 rpm)

3. Cylinders: Outer diameter 25.4 mm ± 0.1 mm

4. Test Path: Arc radius 460 mm

5. Test Stroke: 11.7 mm ± 0.35 mm

6. Clamping Bands: Width 10 mm ± 1 mm

7. Inner Distance Between Clamps: 36 mm ± 1 mm

8. Specimen Dimensions: 50 mm x 105 mm

9. Specimen Quantity: 6 pieces (3 warp-wise, 3 weft-wise)

10. Dimensions (WxDxH): 43 x 55 x 37 cm

11. Weight: 50 kg

12. Power Supply: AC 220V, 50 Hz, 3A