Analysis of the Mechanical Properties and Damage Mechanism of Carbon Fiber/Epoxy Composites under UV Aging.

After 80 days of UV irradiation exposure, a significant decline in the macroscopic mechanical properties occurred in the longitudinal direction, with the largest decrease of 23% in longitudinal compressive strength and a decreasing trend in the transverse mechanical properties at the later stage of aging.

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V-Notched Rail Shear Test Results and Discussion The in-plane shear strength/modulus showed an increasing trend at the beginning of aging as shown in Figure 18 .

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