Mechanical Property
Ability of a textile strand to return to its original length after being stretched under a specific load for a set duration. Yarn elastic recovery is a determining factor in the dimensional stability of knitted fabrics and the performance of activewear. Laboratory testers measure this value by extending the sample and recording the residual deformation after the tension is released.
Fibre Influence
Elastomeric filaments like spandex provide the highest levels of stretch and return. Natural fibres typically exhibit lower yarn elastic recovery than synthetic blends, which can lead to bagging or sagging in finished garments. Blending techniques are used to improve the resilience of wool or cotton yarns for specific apparel applications.
Hysteresis Effect
Repeated stretching causes a gradual loss of springiness as the internal molecular structure of the fibre shifts.
Quality Verification
Garment manufacturers rely on consistent test results to ensure that a product maintains its shape after multiple wash and wear cycles. High yarn elastic recovery prevents the permanent growth of the fabric, which is essential for maintaining the fit of close fitting garments. Quality control teams use the ASTM D1774 standard to provide a repeatable and objective assessment of this performance characteristic.