Joining of carbon fibre reinforced polymer (CFRP) composites and aluminium alloys – A review

Abstract

This paper investigates comprehensive knowledge regarding joining CFRP and aluminium alloys in available literature in terms of available methods, bonding processing and mechanism and properties. The methods employed comprise the use of adhesive, self-piercing rivet, bolt, clinching and welding to join only CFRP and aluminium alloys. The non-thermal joining methods received great attention though the welding process has high potential in joining these materials. Except adhesive bonding and welding, other joining methods require the penetration of metallic pins through joining parts and therefore, surface preparation is unimportant. No model is found to predict the properties of jointed structures, which makes it difficult to select one over another in applications. The choice of bonding methods depends primarily on the specific applications. The load-bearing mechanism of bolted joints is predominantly the friction that is the first stage resistance. Hybrid joints performance is enhanced by combining rivets, clinch or bolts with adhesives.

Numerical-Experimental Investigation into the Tensile Behavior of a Hybrid Metallic–CFRP Stiffened Aeronautical Panel

“…In [20], a comprehensive review on the methods, commonly adopted, to join CFRP and aluminum alloys parts was presented. Among the several methods described, adhesive joints, bolts, and self-piercing rivets (SPR) are, of course, the most affordable.…”

Pre-Inscribed Laser Surface Pattering for Increased Joining Strength in Laser Fusion Bonding of CFRP and Zinc-Coated Steel

“…Carbon fiber-reinforced plastic (CFRP) is an attractive material candidate for weight reduction due to its high strength-to-weight ratio compared to metals. It is especially promising for the automotive industry since toughening environmental regulations and high fuel prices have demanded reduced carbon emissions and improved fuel efficiency [1][2][3]. However, the lack of reliable and productive means for joining dissimilar materials has limited the use of CFRPs.…”

“…Only a handful of methods for joining CFRP and other metals have been used such as chemical binders and a few mechanical means. The toxic chemicals comprising the binders pose serious environmental and health problems and the relatively long processing time accompanied by the need for temporary fixtures has made chemical joining process inefficient [1]. The mechanical joining methods usually require careful alignment of the holes between the parts to be joined, and this poses a challenge for automation.…”

Influence of Processing Parameters on Laser Direct Joining of CFRTP and Stainless Steel

“…e decomposed regions have the sphere-or rod-like shape, which may be ascribed to the insu cient PPS additive and the morphology of CFRTP. According the recent researches [26,36], the decomposition of PPS additive is detrimental to the interface adhesion. When the thickness of PPS additive increases to 300 μm, the stainless steel/CFRTP joint obtains clear and well-bonded interface, as shown in Figure 17(b).…”

“…According to the recent studies [26,36], the thermal joining between the stainless steel and CFRTP is mainly by mechanical bonding. However, [6] also reveals that the thermal joining would promote the metal element diffusion from the stainless steel to melted PPS, which forms the new ion bond with the molecular bond of PPS and improves the bonding strength between the stainless steel and CFRTP.…”