Eventos Anais de eventos
MECSOL 2019
7th International Symposium on Solid Mechanics
Influence of hygrothermal conditioning on axial compression of filament wound cylindrical shells
Submission Author:
Heitor Feitosa Flores , RS
Co-Authors:
Cristiano Baierle de Azevedo, Heitor Feitosa Flores, José Humberto Almeida Júnior, Frederico Eggers, Sandro Amico
Presenter: Heitor Feitosa Flores
doi://10.26678/ABCM.MECSOL2019.MSL19-0178
Abstract
In certain applications, composite structures may either work underwater. Consequently, their mechanical behavior may be affected when working under an aggressive environment, particularly when the matrix has a major contribution to the mechanical behavior of the structure, i.e. with laminas oriented at off-axis angles. This study aims at assessing the hygrothermal conditioning effects on the mechanical response of filament wound (FW) composite cylinders in axial compression. Special attention will also be given to the filament winding pattern formed during manufacturing, which may also affect the structural response of the shells. Carbon/epoxy cylinders were manufactured via filament winding process with 1/1, 3/1 and 5/1 winding patterns and immersed into distilled water and artificial seawater (with salinity of ≈3,5% and pH 8.2, according ASTM D1141 standard) conditionings. Water uptake has been periodically measured. Then, axial compression tests were performed on all cylinders. Results showed that the environmental conditioning decreases the compressive strength in all winding pattern configurations, where for the winding patterns 1/1 and 5/1 conditioned in distilled water the reduction on the compressive strength was of 2.27% and 14.61%, respectively.
Keywords
environmental conditioning, filament winding pattern, composite cylinder, Buckling
