Tensile and flexural behavior of metal/CFRP hybrid laminated plates

Abstract

Metal/CFRP hybrid material system has been recently introduced as an effective alternative for automotive applications. This study aimed to investigate tensile responses and flexural behaviors of aluminum/carbon fiber reinforced plastic (CFRP) hybrid laminated plates by comparing with their counterparts made of net CFRP or aluminum materials. The experimental results showed that for the hybrid specimens the tensile strength increased and the tensile modulus decreased with increasing number of CFRP layers. Further, it was found that the bending indicators of the hybrid specimens were in between those of pure CFRP specimen and pure aluminum specimen. With the increasing number of CFRP layers, a reduction in flexural modulus could be observed in the hybrid specimens, while the flexural strength increased. A parametric study was further conducted numerically and it was found that tensile modulus was less influenced by the fiber stacking sequences when the number of 45° CFRP layers was the same, and both tensile modulus and tensile strength decreased with increasing number of 45° CFRP layers. Type II hybrid specimen, fabricated by upper and lower CFRP plates sandwiched with aluminum core, showed the lowest flexural modulus but the highest flexural strength. When the configurational scheme changed from symmetric distribution (type II) into Type I (fabricated by upper CFRP plate and lower aluminum sheet) or Type III (fabricated by upper aluminum sheet and lower CFRP plate), flexural modulus increased but flexural strength decreased. As for the Type II hybrid specimens, the flexural modulus decreased with increasing number of 45° CFRP layers.

Comprehensive characterization of AA 2024T3 fiber metal laminate with nanosilica‐reinforced epoxy based polymeric composite panel for lightweight applications

“…The stress–strain graph Figure 8A, shows a linear curve for aluminum sheet yielding, which results in a decrease in the slope of the stress–strain curves and because of composite is in elastic stage the stress–strain curve remain in linear. [ 45 ] The tensile strength was compared between the percentage of nanosilica in the epoxy matrix by varying 0, 1, 3, 5, and 7 wt% as shown in Figure 8B. The presence of nanosilica increased the tensile strength up to 244 ± 9 MPa for 3 wt% NS, which is 7% higher when compared to pure FML, as shown in Table 2.…”

An overview of mechanical properties and failure mechanism of FRP laminates with hole/cutout

“…As a further matter, CFRP is a brittle material; it is highly susceptible to fiber/matrix delamination by impact loading 1 . The CFRP laminates catastrophically fail without sufficient warning, thereby restricting their spread to many high‐volume applications.…”

Dynamic response and failure mechanism characterization of composite‐metal sandwich structures under slamming impact utilizing CEL method

“…With the rapid development of high‐performance ships, traditional structural forms have become increasingly difficult to satisfy the challenging requirements of lightweight and high strength. [ 1 ] The expectation of new materials and structural configurations is becoming progressively urgent. Since composite‐metal sandwich structure cannot only inherit the excellent energy absorption capacity and large specific flexural stiffness of sandwich structure, but also integrate the significant advantages of composite materials such as low density, high strength, resistance to corrosion and impact, etc.…”