| Autor: |
Faudree MC; Faculty of Liberal Arts and Science, Tokyo City University, Yokohama-shi 224-8551, Japan., Uchida HT; Graduate School of Engineering, Tokai University, Hiratsuka-shi 259-1292, Japan., Kimura H; Graduate School of Engineering, Tokai University, Hiratsuka-shi 259-1292, Japan., Kaneko S; Kanagawa Institute of Industrial Science and Technology (KISTEC), Ebina-shi 243-0435, Japan., Salvia M; Ecole Centrale de Lyon, CEDEX, 69134 Ecully, France., Nishi Y; Graduate School of Engineering, Tokai University, Hiratsuka-shi 259-1292, Japan.; Kanagawa Institute of Industrial Science and Technology (KISTEC), Ebina-shi 243-0435, Japan. |
| Abstrakt: |
A literature review of up-to-date methods to strengthen Ti/carbon-fiber-reinforced polymer (CFRP) hybrid joints is given. However, there are little or no studies on Ti/CFRP joints by carbon fiber plug insert, which takes advantage of the extremely high surface adhesion area of ~6 μm CFs. Therefore, we cover the current status and review our previously published results developing hybrid joints by a CF plug insert with spot-welded Ti half-lengths to enhance the safety levels of aircraft fan blades. A thermoset Ti/CF/epoxy joint exhibited an ultimate tensile strength (UTS) of 283 MPa when calculated according to the rule of mixtures (RM) for the CF cross-section portion. With concern for the environment, thermoplastic polymers (TPs) allowed recyclability. However, a drawback is easy CF pull-out from difficult-to-adhere TPs due to insufficient contact sites. Therefore, research on a novel method of homogeneous low voltage electron beam irradiation (HLEBI) to activate a bare CF half-length prior to dipping in a TP resin was reviewed and showed that the UTS by the RM of Ti/ EB CF/acrylonitrile butadiene styrene (ABS) and Ti/ EB CF/polycarbonate (PC) joints increased 154% (from 55 to 140 MPa) and 829% (from 30 to 195 MPa), respectively, over the untreated sample. The optimum 0.30 MGy HLEBI prevented CF pull-out by apparently growing crystallites into the TP around the CF circumference, raising the UTS amount closer to that of epoxy. |
