Determination of maximum force and elongation at maximum force using the strip method
scope
ISO 13934-1 tests fabrics at maximum force and elongation at maximum force using the strip method, using a constant elongation (CRE) Tester, in which a fabric specimen of specified size is stretched at a constant rate of elongation until it breaks. Record maximum force and elongation at maximum force and, if necessary, force at break and elongation at break, including equilibrium and wet tests in standard atmosphere.
in principle
This standard applies to woven fabrics, including elastic woven fabrics, as well as fabrics produced by other processes, and generally does not apply to geotextiles, non-woven fabrics, coated fabrics, glass fiber fabrics, carbon fibers and polyolefin flat filament fabrics.
Terms and Definitions
Constant speed Tensile Testing Machine: During the whole test process, one end of the fixture holding the sample is fixed, and the other end moves at a constant speed, so that the elongation of the sample is proportional to the time.
Strip Test: A tensile test in which the entire width of the specimen is clamped in the jaws of a testing machine.
Gauge Length: The distance between two effective gripping points of the test device. Clamp the white paper with copy paper, and form a clamping pattern on the paper to check the effective clamping point/line of the jaws.
Initial length: Under the specified pretension, the length of the sample between two effective clamping points on the test device.
Preload: The force applied to the specimen before the test. The preload is used to determine the initial length of the specimen.
Maximum force: When the tensile test is carried out under the specified conditions, the maximum force recorded when the sample is broken, that is, the breaking strength.
Breaking Force: During a tensile test, the force recorded at the breaking point of the specimen.
Extension: An increase in the length of a specimen produced by a force.
Elongation: The ratio of the elongation of a specimen to its initial length.
Elongation at maximum force: The elongation of the sample under the maximum force.
Elongation at break: The elongation of a sample at break.
