Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Obtaining creep curves for polymer materials using the stepped isothermal method
Submission Author:
Leonardo Cofferri , RS
Co-Authors:
Carlos Eduardo Marcos Guilherme, Felipe Tempel Stumpf, Leonardo Cofferri
Presenter: Leonardo Cofferri
doi://10.26678/ABCM.COBEM2017.COB17-5485
Abstract
The stepped isothermal method (SIM), which was originally developed to be used with geosynthetic materials, has been applied over time to studies involving polymer fibers, as it makes possible to determine the creep lifetime of such materials from a single specimen. This method excels among the common creep tests by reducing the costs, time, and by giving the complete creep curves with low stress levels, due to the progressive increase of the temperature over the same test. A particularity of this method is the rescaling and shifting that must be applied in order to generate a complete curve, since polymers exhibit an atypical behavior when submitted to temperature changes. The results obtained with the SIM method provides, for long periods of time, more consistent data compared to the usual extrapolations common in classic creep tests.
Keywords
SIM method, creep curve, Polymers, offshore anchorage
