Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
Isothermal tensile properties of polyamide monofilaments
Submission Author:
Sarah S. Mendes , MG , Brazil
Co-Authors:
Sarah S. Mendes, Carolina Seixas Moreira, Luiz Nunes
Presenter: Sarah S. Mendes
doi://10.26678/ABCM.COBEM2019.COB2019-0363
Abstract
This article explores the influence of the temperature in the tensile strength of two types of polyamide monofilament. Tensile tests were conducted, isothermally, in two different PA monofilaments with 0.8mm and 0.66mm diameter. Three different temperatures were tested, the first one, 30ºC; the second one, 50C, which is near the glass transition temperature of the fibers; and the third one, 70ºC. During the tests, the tensile force was monitored using a cell load and images of the specimens were captured. A Digital Image Correlation software was used to attain the displacement fields. As expected there was a decrease of the Young’s Modulus in both specimens of polyamide monofilament. The measured Young’s Modulus for Specimens 1 and 2 were (214.5 ± 3.3) GPa and (282.4 ± 3.2) GPa, respectively. For Specimen 1 there was a decrease of 23.6% of the Young’s Modulus at 50ºC and 42.81% at 70ºC, for Specimen 2 the decrease in both temperatures was smaller, 12.12% at 50ºC and 17.35% at 70ºC.
Keywords
polyamide, DIC method, Tensile properties, glass transition temperature
