Gelbo flex tester ASTM F392 is used for flex test for the repetitive strain for films, composites and coating films, etc.

Flex failure is determined by measuring the pinholes formed in the sample structure and change in permeability performance.. It is also called Gelboflex.

Gelbo flex tester ASTM F392 technical data

Principle

The sample (200*280 mm) is attached to the flex tester mandrels. The flexing action consists of a twisting motion combined with a horizontal motion (compression), thus repeatedly twisting and crushing the film. The test set up gives a twisting motion of 440º in the first 90 mm of the stroke and is followed by a straight horizontal motion of 65 mm. The speed is 45 cycles per minute.

Gelbo flex tester ASTM F392​ Features

1. PLC control and 7 inch touch screen operation
2. 5 standard test modes and 4 test stations
3. Long and short stroke fast switching
4. Protection front cover
5. Condition A,B,C,D and E can be chosen
6. Micro printer
7. Could realize test frequency random setting

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