Macro-mechanical analysis of flexural strength of glass/carbon fiber hybrid composites in the hydrothermal environment

doi:10.19936/j.cnki.2096-8000.20220928.006

Abstract

Abstract: In this paper, the stiffness and strength properties of the composite lamina are expressed as a function of hydrothermal parameters. Based on the classic laminate theory and macro-mechanics methods, a calculation program for the flexural strength of glass/carbon fiber hybrid composites (G/CFHC) under hydrothermal environments is compiled with MATLAB. The influence of the hydrothermal environment on the flexural strength of glass/carbon fiber interlayer hybrid composites and glass/carbon fiber sandwich hybrid composites is studied. The change law of bending strength of G/CFHC laminates with different hybrid methods under hydrothermal environment is analyzed. The results show that after G/CFHC laminates absorb moisture in the temperature range of 20 ℃~100 ℃ in a hydrothermal environment, their flexural strength gradually decreases with the increase of temperature. The G/CFHC laminates with adjacent layers of ±45° are affected by the interlaminar shear stress in a hydrothermal environment, and their bending strength is slightly lower. In the temperature range of 20 ℃~110 ℃ in the hydrothermal environment, with (0°/90°)_m as the incremental unit, the flexural strength of G/CFHC laminates increases with the increase of m.

Key words: macro-mechanical analysis, classical laminate theory, hydrothermal environment, glass/carbon fiber hybrid composites, flexural strength

CLC Number:

TB332

ZHAO Xun-peng, SUN Shuang-shuang, WANG Yang. Macro-mechanical analysis of flexural strength of glass/carbon fiber hybrid composites in the hydrothermal environment[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(9): 41-47.

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