The effect of cold environment on the buckling behavior of hybrid composites prepared by using carbon/aramid/glass

Abstract

In this study, the effect of cold environment on the buckling behavior of hybrid composites kept at −18°C for certain periods was investigated. For the buckling tests, hybrid composite plates with different fiber combinations were produced using three different fibers—carbon twill, E-glass twill, and aramid twill—and an epoxy resin (Araldite/Aradur) as the matrix material. Specimens for the buckling experiments were cut from the 12-layer hybrid composite plates and the hybrid composite specimens were then divided into three different groups. The specimens in Groups I and II were kept in a refrigerator for 90 days and 150 days, respectively, while Group III specimens were kept under room conditions as the control group. The hybrid composite specimens were subjected to buckling tests as soon as their waiting times were over. The buckling behaviors of hybrid composites with different stacking sequences were examined on the basis of the data obtained from the buckling experiments. The load–displacement curves obtained from the experiments were used to calculate the critical buckling loads ( P crs) for each hybrid configuration. The P cr was found to be highest for the hybrid configuration CAG (carbon/aramid/glass) with the stacking sequence [(0/−90)3]s and lowest for the hybrid configuration CAG45 with the stacking sequence [(45/−45)3]s. The hybrid composite specimens kept in a cold environment were found to have higher P crs than those kept under room conditions. The difference was greater in the case of the hybrid specimens kept in the cold environment for 150 days.

Assessment of nanoclay impact on buckling response of carbon/Kevlar hybrid composites

“…They concluded that the critical buckling load increases when the stiffer fiber placed on the upper layer of the plate. A broader perspective has been adopted by Öndürücü and Kayıran, [ 38 ] and they investigated the temperature and hybridization impact on the buckling response of fiber‐reinforced composite laminates. For this purpose, glass, carbon, and aramid fibers were used in composite plate production by following different stacking sequences and kept at −18°C and room temperature for different time durations.…”

Evaluation of the hydrothermal aging effect on the buckling behavior of hybrid glass/aramid/epoxy composite plates: Comparison of distilled water and seawater

“…Security and steady engineering structures are necessary and constituent to maintain the durability of the structures. Hence, researches are continually rising to improve the mechanical properties with the goal to prevent failures from extreme loading [1][2][3] and severe environmental conditions. Polymer matrix composites have assumed great significance in the developing outdoor and marine industry as replacements for metal alloys because of high strength/stiffness to weight ratios, corrosive resistance.…”

“…4,5 Buckling can be defined as an unexpected failure of a structural component exposed to compressive loads, where the amount of compressive stress at the failure is smaller than the ultimate compressive stress amount that material can withstand. 1,6 Many studies have been applied on the buckling properties of composites under the headings such as hybridization effect, [7][8][9][10][11][12][13][14] particle reinforcement, 15,16 cut out, and geometry effect. [17][18][19][20][21] Moreover, the tensile, flexural, impact behaviors of nonhybrid and hybrid composites under hydrothermal aging conditioning are studied.…”