广东费飘职业故本学院 Guangdong Inatitute of Textile Technology Fiber Properties and Identification □ Tensile deformation ■Load a Force applied to extend the fiber a Unfair to compare force applied to fibers with different sizes Stress Unit: Pa= N/m2 -Engineering stress F or dyne/cm2 G psi=pound/in 2Fiber Properties and Identification  Tensile deformation ◼ Load:  Force applied to extend the fiber  Unfair to compare force applied to fibers with different sizes. – Stress –Engineering stress Unit: Pa = N/m2 or dyne/cm2 psi = pound/in2