Fabric Stretch
Stretching is one of the material deformation types most relevant for fabrics. One of tht physical property of fabrics to be covered is that of stretch. But the attribute of fabric stretch has associated properties that are as important as the stretch characteristic itself. Stretching typically occurs during garment wearing, caused by forces applied by a human body. Tight fitting garments experience more stretching in comparison with loose fitting. The ability of fabric to stretch is based on the fabric composition; using elastic fibers such as Elastane causing higher stretchability. The fabric production method also affects the ability to stretch, e.g. looping method utilized for the knit fabrics production increases the stretchability of the fabric.
The application of various external stretching forces to a fabric causes appearance of stress. This could be described as a physical quantity that signifies the internal forces that neighboring particles of a continuous material exert on each other. Strain or elongation provide you with the measure of the deformation of the fabric caused by stress described above.
In simple words, applying a force to a fabric pieces causes appearance of the internal stress which results in a strain (fabric elongation).
Stretch is a physical property of fabrics, but the attribute of fabric stretch has associated properties that are as important as the stretch characteristic itself.
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