Tensile properties of Textile Fibers :
Mechanical Properties of Textile Fibers
The properties that describe a fiber strength, elongation, elasticity, abrasion resistance, modulus of elasticity etc.
Mechanical properties of fibers:
❶ Tensile Properties
❷ Twisting/Torsional Properties
❸ Flexural Properties
Tensile properties of textile fibers
Tensile properties indicates how a material (fiber) will react to the forces being applied in Tension. Some tensile properties are given below –
❶ Tenacity ❼ Elastic recovery
❷ Breaking extension ❽ Yield point
❸ Work of rupture ❾ Yield stress
❹ Initial modulus ❿ Yield strain
❺ Work factor ⓫ Breaking load
❻ Work recovery ⓬ Creep etc.
Analysis of stress-strain/load-elongation curve
When an external force is applied to a fiber, it is balanced by the internal force development in the molecular structure of the fiber. By increasing the stresses, material will deform and follow the load-elongation/stress –strain curve.
Elastic region: In the region from O to A, the fiber shows elastic region and deformation is called elastic deformation. At region, Hooke’s Law is obeyed according to which stress is directly proportional to strain.
Plastic region: In the region from A to B, the fiber shows plastic region and deformation is called plastic deformation. Plastic deformation which means that it can deform without an increase in the applied load.
Yield point: The point A is called yield point.
Breaking point: The point B is called breaking point. The fiber will break at this point.
Tensile stress-stain behavior of some fiber