Demattia Flex Cracking Tester
Rubber Testing Equipment
Standards
EN ISO 20344, ASTM D813, ASTM D430, ISO 132
Description
GenFlex tests the ability of rubber products to withstand repeated flexing without developing cracks is of prime importance where such products are used in conditions undergoing repeated flexing.
Flexing endurance of rubber products is determined by simulating in laboratory the action of flexing repeatedly under standard conditions of speed, mode, and degree of flexing.
Functionality
- Fix the specimen into the movable grips and observe your specimens for their resistance to cracking. The system is equipped with an intelligent testing failure system.
Specifications
| Model | GenFlex-B1 | GenFlex-B2 |
|---|---|---|
| Specimen | 154 x 25 ±1 x 6.3 ±0.15mm | 108 ±0.5 x 70 ±0.5mm |
| Reciprocating Stroke | 57mm | 44mm |
| Maximum Distance Between Fixtures | 75mm | 57mm |
| Testing Speed | 300 ±10cpm | 340-400 ±10cpm |
| Counter | LCD - 0-999,999 | |
| Dimensions (W X D X H) | 35x60x75cm | |
| Weight | 78kg | |
| Power | 110V/60Hz or 220V/50Hz | |
FAQs
The following industry standards are typically followed when testing with the DeMattia Flex Cracking tester:
ISO 132, ISO 6943, ASTM D813, ASTM D430-B and JIS K_6260
Most commonly, rubber sole material is used in a DeMattia Flex tester. Due to the fact that the rubber soles are being used daily and coming into contact with roads, dirt and other elements, they endure the maximum level of flexing. It is the friction from all the flexing that can lead to a surface crack which can lead to failure of the rubber compound.
While rubber has an extremely high strength rating, it also exhibits some faulty characteristics after being exposed to heat, cold weather and humidity/temperature changes. After being exposed to these elements, it is common for a crack to develop on the surface and these cracks have a tendency to continue to grow. DeMattia Flex Cracking can help to estimate the rubbers lifespan after a crack has formed in the materials surface.
Up to 6 specimens can be tested at one time after setting the frequency per your industry standard.
The specimen must first be created in the size required per the industry standard. NextGen can supply the ASTM D430, Method B cutting dies along with the D813 mold required to perform these tests. ISO moulds can also be provided as a custom order.
The DeMattia test allows the operators to analyze the fatigue-cracking properties of the material in question. It provides a picture of the potential lifespan of the material when being used in its service application.
The DeMattia Flex Tester provides a representation of the ability for a punctured rubber specimen to resist crack growth while enduring bending and flexing. Because of the large number of variables, there is no exact correlation to draw between the test results and the ability of the rubber to perform in its intended application.
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