Testing Item： Crack Strength Test Instruction
Test Principle: Test the tensile strength of the material
Attention Point：
- Change the counting unit to Newton
- Reset the data of the machine to zero
Use tongs to clamp the testing panel
If found tongs too older cannot clamp the testing panel which could fold the panel into more layers to ensure the panel could fix well with the machine.
Attention Point：
Microfiber Materials
A.Testing panel of vertical and horizontal (longitude and latitude cutting)3 sets each.
(size: 50mm*250mm)
B.Jig clearance 100mm, tension speed 200mm/min
C.The test was stopped when the section was torn to 10CM
Synthetic leather
A.Testing panel of vertical and horizontal (longitude and latitude cutting)3 sets each.
(size: 40mm*150mm)
B.Jig clearance 75mm, tension speed 200mm/min
C.The test was stopped when the section was torn to 5CM
Attention Point: Take the average data of three times the testing data.
Remark: The data of testing should reset to zero when retesting， to ensure test data is correct.
