Improvement of strength on joint of GFRP/A1-5083 joint using Epoxy/Al-powder adhesive for electric vehicle car body

摘要

The objective of this research is to investigate the optimum aluminum powder content in epoxy as adhesive and surface pattern on shear strength of single lap joint between aluminum-GFRP composite for electric car application. The shear strength was determined by utilizing the single-lap shear test. The aluminum powder content was varied in 0, 2.5, 5, 7.5,10 and 12.5(w/w), whereas the surface pattern varied in 5 type of pattern. Experimental results showed that the aluminum powder-epoxy adhesive has the maximum shear strength at 12.5% of aluminum powder content. However, for the use of the surface pattern on adherend shows slight differences of shear strength. The adhesive failure mode occurred the joining using aluminum powder-epoxy as mixed mode.