Astm d751 includes specific sections on seam strength testing and adhesion coating testing described below.
Fabric tensile strength test.
In the industrial textile industry tensile strength typically refers to the strength and elongation properties of the material.
Nelson labs tests fabrics by en 29073 or iso 9073 or astm d5034 and d5035.
That is the strength of the yarns in a specific width together with the fabric assistance from the adjacent yarns.
The two jaws are fixed on both side of the specimen from 1 edge.
Tensile testing measures the force needed to elongate and break a sample.
If the tear strength is high means punctures in the fabrics do not propagate easily.
Seam slippage method.
Fabric breaking strength.
Fabric breaking strength is also can be called tensile strength which refers to as the maximum tensile force when the specimen is stretched to break.
It is an inherent property of the fabric and so forms part of the specification for fabrics which are to be made into upholstery.
It is one of the main standards to assess the intrinsic quality of textiles the unit of fabric breaking strength is newton n and it is used to evaluate the capability of the fabric to resist to tensile damage.
Standard test method for tearing strength of fabrics by falling pendulum elmendorf type apparatus.
5 7 the grab test procedure is applicable to the determination of the effective strength of the fabric.
The grab test method and the strip test method can be used to measure the seam strength of fabric specimen.
Here two testing were done.
Tensile strength testing of fabric.
Importance of tear strength test on fabrics.
At first we take specimen 4 x6.
It is used to determine the strength and elasticity of woven or nonwoven fabrics plastic film or sheeting gloves condoms and other materials.
With fabrics tensile strength can vary widely if the fabric is wet or dry.
Fabric tensile strength test methods.
For instance the strength of wet cotton yarn is greater than that of dry cotton yarn.
Then the specimen is marked by a pencil at 1 5 from the edge of the specimen to assist in clamping it so that the same set of threads are clamped in both jaws.
Astm d4884 is the test method recommended for measuring the seam strength of geotextiles.
Seam strength is the strength of the connecting seams constituting the fabric.
Seam slippage is the condition where a seam sewn in the fabric opens under load.
The breaking force determined by the grab procedure is not a reflection of the strength of the yarns actually gripped between clamps and cannot be used for direct comparison.
The tear strength is vital for the textiles bulletproof jackets worker jeans tents apparel sacks and industrial applications.
