2025 Volume 81 Issue 14 Article ID: 24-14013
CFRP, which is lightweight, high-strength, and highly durable, is rapidly being applied in automobiles, aerospace, and sports equipment fields. However, developing effective recycling methods is necessary since the waste is treated as industrial waste after use. Recently, recycling technologies for recovering CFRP from waste materials have been advancing, but there is still a lack of practical applications for effectively using the recovered recycled carbon fiber. This study focuses on the potential of recycled carbon fibers to enhance the performance of FRP in orthogonal and shear directions, which are weak points caused by the anisotropic nature of FRP. First, the physical properties of matrix resin mixed with recycled carbon fibers are evaluated. Next, the effects of milled recycled carbon fibers on the mechanical properties of the FRP matrix resin are analyzed, and nondestructive internal observations of these properties are conducted.