Journal
THEORETICAL AND APPLIED FRACTURE MECHANICS
Volume 121, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.tafmec.2022.103539
Keywords
Short -beam bending specimen; Hygrothermal aging; Low temperature; Generalized maximum tangential stress; criterion; Mixed -mode loading
Categories
Ask authors/readers for more resources
The effect of different environmental aging conditions on the mixed-mode fracture behavior of epoxy resins was investigated. It was found that the hygrothermal aging condition had a more severe deleterious effect on the fracture response of the specimens compared to the low-temperature condition.
The effect of different environmental aging conditions on the mixed-mode fracture behavior of epoxy resins was investigated using a sub-size specimen. The short-beam bend (SBB) specimens with different crack inclination angles were manufactured and subjected to low-temperature (-71 degrees C), hygrothermal (immersion in deionized water at 60 degrees C) and room-temperature conditions. The deleterious effect of low-temperature and hygrothermal aging conditions on the mode-I, mode-II and mixed-mode I/II fracture responses of the epoxy resin was studied by testing the aged and unaged SBB specimens under three-point bend loading. The experimental results indi-cated that the hygrothermal aging condition, with a reduction of 49% in the effective fracture toughness, imposed a more severe deleterious effect on the fracture response of the specimens in comparison with the low -temperature condition with a decrease of 35% in the effective fracture toughness. The generalized maximum tangential stress criterion was used to predict the fracture loads of the aged and unaged specimens. Moreover, optical microscopy and scanning electron microscopy techniques were employed to assess the fracture surfaces of the specimens aged under different conditions.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available