YARN TESTING IN TEXTILE INDUSTRY:-

Yarn Testing in Textile Industry after their manufacturing:-

In textile, the yarn testing is essential factor. The yarn is tested , for strength, count, luster, irregularity , fiber, hairy ness and many others.

YARN STRENGTH AND ELONGATION/TENSILE STRENGTH TESTING EQUIPMENT:-

Textile testing of yarn is to determined the breaking force, elongation and toughness properties. Breaking tenacity, a ratio of the breaking force to yarn linear density is also a common property for evaluating the strength of a yarn material and for comparison and validation purpose. Tensile testing of yarn to determine properties such as braking strengthand elongation includes the use of a tensile testing machine and unique grip to hold the yarn. It is necessary to clamp the yarn test specimen so that the machine loading access is aligned with the specimen axis. With a thin test specimen for tensile testing of yarn can prove difficult.

This allignment of yarn during tensile test is most easily achieved and repeatable. Using capstan style grip sharp edgs on gripping devices can cause yarn specimen failure to occur outside the gage section and for below the actual tensile strength of the yarn. Early failure of yarn due to improper grips results in poor measurements of elongation rupture, strain and breaking strength of yarn. Yarn capstan grips also help to avoid this, as the yarn never encounter sharp edgs. Capstan grips differs from wedge grip by distributing the tension in the yarn across a horn structure.

ISO and ASTM standard tensile test method of yarn have standard test method for testing modules and toughness of yarn. ASTM D 2256 ISO 2062  also covers the test methods for tensile testing single strand yarn to determine tensile, stress-strain , characteristic of yarn is typically conducted using low force, high elongation, constant rate of exclusion, table top tensile test machine. ASTM D ,76 AND ISO ,2062 specifies the requirements of the most widely used tensile test machine for textile including constant rate of extension ( CRE), constant rate of force( CRF) and constant rate of loading (CRL) machines. The machine and grip familier below meet. ASTM and ISO requirements for tensile testing of yarn can be configured to meet the specific customer requirements.

Applicable Testing Requirements:-

ISO 2062 Textile Yarn  Break Force and  elongation test equipment ASTM D 2256 Tensile Yarn Strength Testing Equipment.

Recommended Test Machine:-

100 series universal test machine:-

Its features is as follows;

1. Forces upto 10 KN (2.250 lbf)

2. Low force table top system.

3. Modular series of five frame options with adjustable test space.

4. Affordable testing option for tension, compression, bend peel and much more.

200 series Electro-mechanical universal test machine:-

Features:-

1. Forces upto 5 KN (1.125 lbf).

2. Low force table top system.

3. Test speed upto 2500 m/min(100 inches/min).

4. Best for high travel and elongation test requirement.

300 Series Electro-mechanical universal test machine.

Features, 

1.Force range 5 KN to 600 KN (1.125 lbf to 135,000 lbf.

2. Adjustable test space.

3. The most popular choice for static tension and compression test.

4. These dual column testers are available in both table top and floor standing.

Ref:-https://www.testredources.net