ISO 2062 Breaking Force and Elongation of Yarns
ISO 2062 is used to test textile yarns and twine to determine the breaking force and elongation at break. The testing of yarn is an essential step between raw material and finished fabrics, and aides in controlling the quality of the end product.
The test specimen is clamped on either end in stationary jaws and is pulled until failure at a constant rate of displacement. For this particular test, it is important to have a high data capture rate, as some specimens will fail within a few seconds. High data capture rates will allow data to be captured in this short time.
Instron’s 2714 series pneumatic cord and yarn grips provide a smooth surface and contoured gripping area to reduce stress on the specimen, which reduces the chances of jaw breaks and premature specimen failure. These grips are operated with a foot switch, which allows for hands-free operation. These grips offer different styles of interchangeable clamping blocks, including specialized blocks for high denier Aramid fibers.
The challenges of testing to this standard are:
- Specimen gripping
- Instron pneumatic cord and yarn grips provide a contoured gripping surface that reduces chances of jaw breaks while maintaining high throughput
It is important to review ISO 2062:2009 in order to fully understand the test setup, procedure, and results requirements.
Pneumatic cord and yarn grips provide a convenient method for clamping fiber, cord, yarns and fine wires to reduce the problem associated with testing these materials. A specially designed horn with a smooth finish and a contoured surface with a graduated cam allows for easy loading and a stress reduced clamping area on the specimen. The clamping mechanism can be activated either automatically or through a foot switch. This allows hands-free grip operation enabling the specimen to be held with both hands, for easy loading. Pneumatic cord and yarn grips provide selectable clamping force to accommodate different materials and excellent follow-up action which compensates for decay of the holding force due to specimen creep.
- 0.8 MB
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