Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 13, 2020 - September 16, 2020
Carbon fiber reinforced thermoplastics (CFRTPs), which have excellent specific strength and specific rigidity, are used with metallic materials such as aluminum (Al) alloys. Therefore, there is a demand for a technique for bonding metal and CFRTP. The purpose of this study is to evaluate the effect of the nanostructure of the interface on the strength in the joining of Al alloys and CFRTP laminates with PEEK as matrix resin. In the experiment, nanostructures were fabricated on the Al alloy surface by anodizing and etching treatments. After that, they were joined using a hot press and the tensile shear tests were performed. The shear strength of A5052 and CF/PEEK was 12.4 MPa. As a result of the fracture surface observation, it is due to the anchor effect of the resin impregnated into the nanostructure. From these results, it was found that the micropores with a diameter of approximately 1 μm are effective for joining with CF/PEEK. The shear strength of the joint between A2024 or A7075 and CF/PEEK was 2.41 and 2.82 MPa, respectively. This is probably because the nanostructure had a very small shape and was not impregnated with resin. Therefore, it is necessary to investigate suitable nanostructure fabrication conditions for these Al alloys.
