Abstract
The mechanical properties of a recycled carbon-fiber-reinforced plastic (rCFRP) were investigated. The rCFRP samples consisted of epoxy resin with 60% carbon fiber (CFRP) and acrylonitrile butadiene styrene resin. Five different weight fractions of CFRP were selected from 0 to 70% of the total. The ultimate tensile strength (UTS) increased gradually with increasing CFRP content, but the UTS dropped considerably for the CFRP70% sample. Similar to the tensile strength, the fatigue strength increased with increasing CFRP content. However, despite one of the samples having low tensile strength (CFRP70%), relatively good fatigue properties were obtained. This was influenced by the low crack driving force stemming from severe crack closure. The crack growth behaviors were analyzed using a crack closure model.
