Thin tissues (or called webs) of short aramid fibers were added at the adhesive joints between carbon-fiber face sheets and aluminum-foam core to form aramid-fiber composite adhesive joints for improving the interfacial bonding strength of sandwich structures and therefore other structural properties. In-plane critical compression loads and failure modes of carbon-fiber aluminum-foam sandwich beams with short aramid-fiber composite adhesive joints are investigated and discussed in this study. Improvements in critical compression loads were achieved for all specimens with aramid-fiber composite adhesive joints of different densities. It is suggested that the composite adhesive joints using low-density short aramid fibers is effective in promoting reinforcements against cracking and delamination at the interface between carbon-fiber face sheets and aluminum-foam core. The underlying interfacial strengthening and toughening mechanisms were discussed and analyzed based on observations from optical image and scanning electron microscopy. © 2014 Taylor & Francis.
Sun, Z., Jeyaraman, J., Shi, S., Sun, S., Hu, X., & Chen, H. (2014). Processing and property of carbon-fiber aluminum-foam sandwich with aramid-fiber composite adhesive joints. Journal of Adhesion Science and Technology, 28(18), 1835-1845. https://doi.org/10.1080/01694243.2014.925385