Effect of Field Irrigation on Tensile Behaviors of Disposable Drip Tapes Made from Virgin PE

Abstract

In the present work, effect of field irrigation on tensile behaviors of disposable drip tape made from virgin PE is studied. Results show that after 5 months (from Novomber, 2012 to next April, 2013) field irrigation tests, there are no intrinsically changes in tensile stress-strain behaviors for the disposable drip tape made from virgin PE along the longitudinal direction. Tensile stress-strain behaviors for the disposable drip tape made from virgin PE along transverse direction is different. After field irrigation tests, the tapes are prone to sudden rupture at the seams accompanied with a relative smaller elongation and acute stress drops while those as-received show large elongation with gradual stress decrease under transverse tensile. However, rebound of the stretched tapes after field irrigation tests is distinctly smaller than those of as-received samples.