VISCOELASTIC NATURE OF CHORIOAMNIOTIC MEMBRANES

  • 1 January 1977
    • journal article
    • research article
    • Vol. 50  (4) , 467-472
Abstract
This study established the viscoelastic nature of the human chorioamniotic membrane. Membrane tissue taken from term pregnancies was placed in a state of biaxial stress consistent with the condition in which membrane rupture in normal healthy patients. The phenomena of creep, stress relaxation, elastic recovery and time-dependent load deformation relations were demonstrated. The experiments needed to produce these phenomena are described. The results were graphically reported. The experiments were performed using samples of fetal membranes and comapred to gum rubber which was a known elastic material. From the results, one could conclude that fetal membranes were viscoelastic. They flowed freely under applied stress, and they had elastic and viscous properties which were time dependent.

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