MECHANICAL-PROPERTIES OF A NEW-TYPE SUPER HYBRID MATERIAL

The new material is composed of alternating bonded layers of high stre ngth aluminum sheets and unidirectional hybrid FRP layers. A hybrid FR P layer is also composed of a CFRP layer sandwiched in between two KFR P layers. The CFRP layers prevent kink band formation in the KFRP laye rs. The KFRP layers prevent growth of micro-cracks produced on the CFR P layers. At the same time, KFRP layers act as an insulator between an aluminum layer and a CFRP layer to prevent galvanic corrosion. Result s of tensile and compressive tests indicated that the mechanical prope rties of the new material were improved by 10%-50% from those of KFRP/ Al. It was also indicated that though the tensile strength of the new material was almost the same as that of CFRP/Al, its failure strain in creased by about 40%. Galvanic corrosion in the bonded line was not pr oduced.