Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Mechanical analysis of fiberglass-reinforced polyester composites artificially and naturally aged.
Submission Author:
MARIA GUERRA , PR , Brazil
Co-Authors:
MARIA GUERRA, Lucas Freitas Berti
Presenter: MARIA GUERRA
doi://10.26678/ABCM.COBEM2023.COB2023-2273
Abstract
Fiberglass-reinforced polyester matrix composites are used in the Brazilian electricity sector. These composite materials can manufacture poles and crossarms for electricity distribution networks installed in a hard-to-reach locations. For its application in electrical networks, poles and crosses must be sized and manufactured according to specific standards. The Brazilian standard for this application is ABNT NBR 16989. Although available technical Standards consider the aging test performance in a weathering chamber on the material, there is no consensus in the technical community about the relationship between the aging test results degradation and durability of the structure. The present study aims to establish a relationship between natural aging and aging in a weathering chamber of composite samples of polyester reinforced with fiberglass. This relationship provides information on the structure life span after installation. This work was done in four stages to establish this relationship: tensile strength tests were made in three kinds of samples: non-aged samples, naturally aged samples and artificially aged samples. After that a analysis of data was made to establish a correlation between the two types of aging.
Keywords
polymer composite material, fiberglass reinforced polyester, weathering chamber, artificially aging, Mechanical Properties
