Footwear testing--Test Method for Whole Shoes Flexing

Shoes Flexing Tester applies SATRA TM92 standard, is used to test the flexing resistance of finished shoes or shoe sole.

Test Purpose:

It's used to determine its flexing resistance or indicating the cracks of shoe or shoe sole through reciprocating flexing movements.

Test Machine:

GT-KA01-2 Whole Shoes Flexing Tester

Test Standard:

SATRA TM92

Apparatus and Materials:

a) Swing metal plate, at a rate of 140 cycles per minute.

b) Two artificial foot which are adjustable size & position

c) Digital counter, has reset function and can be set as required test cycles.

d) Angle adjustment device, can adjust to zero (start position)

f) The control panel can be used to control the working status of the instrument and set parameter of counter, including ‘START’ button, ‘STOP’ button, manual button, reset button, preset electronic counter.

Test specimen:

• The sample shall be the completed whole footwear after 48 hours of processing without obvious defects.
• Either one or both of a pair of completed whole footwear.
• If possible, store the footwear in a standard controlled environment of 20±2℃ and 65±2%RH for 48hours.

Test Condition:

• Bending angle: 30°, 45°, 50°, 60°, 90°( adjustable)
• Test speed: 50~150/min
• Test chamber temperature: 23±2℃

Test Procedure:

1)Adjust the eccentricity to achieve the required angle.

2)Clamp the specimen

3)Adjust the position of the front clamp (press block) and secure it presses in the toe of footwear

4)Reset the counter before testing , pre-set the bending cycles to the specified value and boot device to test

5)Observe the change of the whole shoe after reaching the required number of tests.

Test report:

• At each inspection stage report shall be include the number of cycles flexed, types of failure (if any) and a quantified measure of the failure (if possible).
• Unsplit is qualified, and split is not qualified. The length of the split is expressed in millimeters, if any.
• The test results for each pair of shoes are based on visual inspection. If one of them is split, the pair of shoes should be treated according to the split.