Characterisation of tape-based carbon fibre thermoplastic discontinuous composites for energy absorption

Abstract

Tape-based discontinuous composite is a relatively new type of composite material that offers improved mechanical properties for similar process-ability compared to Sheet Moulding Compound or Bulk Moulding Compound. This makes it potentially attractive for the automotive industry. In this paper, a thin-ply carbon fibre reinforced polypropylene-based discontinuous composite is studied. Mechanical tests are performed to obtain the tensile, compression and shear behaviour of the material. The energy absorption via tearing is also studied to assess the suitability of the material for energy absorption applications, such as crash-boxes. The tearing test results show a large degree of plastic deformation and an advancing damage front leading to higher specific energy absorption via tearing compared to conventional composite materials.

Effects of blowing agents and curing temperatures on physical and mechanical properties of natural rubber foam for laminated floor tiles

“…8,37 In addition, these behaviors of composite structures have been confirmed in other studies as well. [16][17][18] The comparison of hysteresis loops in the different NR-foam formulations was depicted in Figure 10. It was noted that the area between the curve and the extension axis of a compressive force-stroke graph represents the energy absorbed or released by NR-foam samples.…”

“…Many studies have been performed to investigate the energy absorption properties of reinforced aluminum foam, 14 foam concrete, 15 and rigid assembled composite structures. [16][17][18] Furthermore, some studies [19][20] expressed an energy absorption property in terms of a hysteresis loss ratio to be easily compared to related works. However, it has been noted that the energy absorption properties of rubber foam for the laminated floor have received little attention in the literature.…”

Experimental Characterization of Internal Structure and Physical Properties of Unidirectional Ply‐Level Hybrid Carbon Composite Material

“…The analysis at 500 °C showed only a slight decrease in mass at the beginning, which was attributed to moisture removal. Francis et al [ 38 ] used a 450 °C temperature for resin burn‐off of carbon fiber composites. Therefore, it was concluded that a temperature of 400 °C should not damage the carbon fibers.…”

“…Although the burn-off method is more commonly used for the estimation of fiber volume fraction of glass-fiber composite materials, [35][36][37] it has also been used by Francis et al [38] for carbon fiber composites. McDonough et al also described a procedure to use the burn-off method for hybrid glass/carbon fiber composites.…”