TY - SER AU - Mai, Yiu-Wing AU - li, Robert K.Y. AU - Ching, Emma C.Y. TI - Effects of Gauge Length and Strain Rate on Fracture Toughness of Polyethylene Terephthalate Glycol (Petg) Film UsingEssential Work of Fracture Analysis KW - Strain Rate KW - Fracture Toughness KW - Polyethylene Terephthalate ER -