Stretch and recovery #ASTMD4964 #ElongationTest #StretchFabricTest #FabricElongation

ASTM D4964 is the standard test method for determining the tension and elongation properties of elastomeric yarns using a constant-rate-of-extension (CRE) tensile testing machine. In this video, we explain the procedure, equipment, calculations, and key parameters involved in this test method with simple language and visuals. 📌 Key topics covered: Purpose of ASTM D4964 Sample preparation Test procedure on tensile machine Calculation of elongation and force Application in textile industry This test is commonly used for spandex, Lycra, and other stretch yarns.