Estudio del desempeño de un neumático reencauchado tipo 3 mediante el ensayo de carga y velocidad determinado en la Norma NTE INEN 2616:2018

Abstract

The objective of this research was to study the performance of a type 3 retread tire through the load and speed test determined in the NTE INEN 2616:2018 standard. For this, it was used a retreaded tire with 215/75R17.5 characteristics considered by the INEN 2096 type III standard, a cold retread produced in the company Cauchosierra. The studies done to the tire were carried out in the accredited laboratory of Escuela Politecnica Nacional. The tests were carried out in three different stages by using constant speed and temperature throughout the test time, 48 km/h and 25 °C, respectively. Each analysis stage has different values of loads and times as the INEN 2616 regulations determine. For the first stage, a load of 1439 kg was applied during 7 hours. In the second stage, the load was modified to a value of 1831 kg for a time of 16 hours. Finally, in stage 3 a load of 2202 kg was applied for 24 hours. As a result, the tire withstood the speeds and loads applied until the end of stage 2, after elapsed 11 minutes of stage 3 the tire produced a failure causing a detachment within its tread. It is concluded that the tire produced the failure due to its age, since these cannot be retreaded after 5 years of manufacture and the sample taken had been manufactured for 7 years. Therefore, it is recommended that the years of manufacture be reduced for future studies.