GATE (TF) Textile 2012 Question Paper Solution | GATE/2012/TF/18

Grab tensile strength is a measure of the force required to break a material, such as a textile fabric or a film, when it is subjected to a sudden or rapid pull. It is an important property of materials that are used in applications where strength and durability are essential.
The grab tensile strength test involves cutting a sample of the material into a specific shape, usually a rectangle or square, and clamping it between two jaws of a testing machine. The jaws are then pulled apart at a constant rate, and the force required to break the material is recorded.
The term “grab” in grab tensile strength refers to the method used to hold the sample in place during testing. The sample is held by gripping it at the edges or ends, rather than clamping it in the middle, as is done in some other types of tensile strength tests.
The grab tensile strength is typically reported as the maximum force, or load, that the material can withstand before breaking, divided by the cross-sectional area of the sample. This value is expressed in units of force per unit area, such as pounds per square inch (psi) or newtons per square meter (N/m²).
In summary, grab tensile strength is a measure of the force required to break a material when it is subjected to a sudden or rapid pull. It is an important property of materials used in applications where strength and durability are essential, such as textiles, films, and packaging materials.

The stripe test is a method used to determine the strength of a fabric. It involves cutting a small strip of fabric and subjecting it to a tensile strength test, which measures the force required to break the fabric. The results of the test can be used to assess the quality and durability of the fabric.
The stripe test is typically performed on a tensile testing machine, which applies a controlled load to the fabric strip until it breaks. The test is usually conducted in both the warp and weft directions of the fabric, which are the longitudinal and transverse directions, respectively.
To perform the stripe test, a sample of the fabric is cut into a strip with a specific width and length. The strip is then clamped in the jaws of the tensile testing machine and pulled at a constant rate until it breaks. The force required to break the fabric is recorded, and the results are typically reported in units of force per unit width, such as pounds per inch (lbs/in) or newtons per centimeter (N/cm).
The stripe test is an important method for assessing the strength and durability of fabrics, particularly those used in applications where high tensile strength is required, such as in upholstery, automotive interiors, and industrial textiles. It is a quick and simple test that can provide valuable information about the quality and performance of a fabric.