Mode I fracture toughness and fractographic investigation of carbon fibre composites with liquid Methylmethacrylate thermoplastic matrix

Ultrasonic Welding of Novel Carbon/Elium® Thermoplastic Composites with Flat and Integrated Energy Directors: Lap Shear Characterisation and Fractographic Investigation

“…Additonally, there is clear evidence of the formation of the plastically deformed zone at the interstitial site, as seen from Figure 22(a), and it has been further investigated at higher magnification (refer Figure 22 (b)). As explained in the previous researches [48,74,75], the fracture surfaces noticed in Figure 22 (a,b) is a typical characteristic of slow and ductile fracture, which is attributed to the viscoelastic property of the thermoplastic matrix, herein is the case with Elium ® resin. This shows that the flat ED affects the LSS value more than the integrated ED, and the thickness of ED film is an important selection parameter for ultrasonic welding.…”

“…It can be manufactured while using liquid injection processes, like Resin transfer moulding and vacuum infusion processes, as it possesses a viscosity that can go as low as 50 cP. Already, significant research is reported in the literature investigating the impact [43][44][45][46][47], fracture toughness [48][49][50], vibration [51], flexure [52][53][54], tensile [54,55], and other attributes [56,57] of this novel resin system with different fibre reinforcements. Murray, R.E.…”

Investigation on Ultrasonic Welding Attributes of Novel Carbon/Elium® Composites

“…For the manufacturing of thermoplastic composite laminates, FOE sized 12K 2 × 2 twill weave dry carbon fibers supplied from CHOMARAT were used as the reinforcement of 380 gsm [57] and Elium ® 150 thermoplastic resin was used (Arkema, France) as the matrix material. Elium ® 150 resin undergoes radical polymerization to form high molecular weight acrylic co-polymers with the addition of a benzoyl peroxide initiator at a mixture ratio of resin to hardener 100:3 at room temperature (RT) [4,46,49,58]. For the adhesive bonding study of composite materials, SAF 30 5 adhesives were used, provided by Bostik [59].…”

“…It can be manufactured using liquid injection processes like Resin Transfer Molding (RTM) and vacuum infusion processes as it possesses a viscosity that can go as low as 50 cP. Recently, significant research has been reported in the literature investigating the impact [44][45][46][47][48], fracture toughness [49][50][51], vibration [52], flexure [53][54][55], tensile [55,56], and other mechanical attributes of this novel resin system with different fiber reinforcements. Current research aims at investigating the welding attributes of this novel resin system, which could pave an excellent way of joining Elium ® composite parts.…”

Advances in Ultrasonic Welding of Thermoplastic Composites: A Review

“…Recently, thermoplastic composites have become the most demanding material, as these provide numerous advantages over thermoset composites. Thermoplastic (TP) composites are preferred due to their excellent vibration damping [4], high impact resistance [5][6][7][8][9], high productivity, high damage tolerance, fracture toughness [10][11][12], recyclability, reformability, being weldable and repairable, having flexural strength [13][14][15] and their cost-effectiveness compared to thermoset composites [16,17], and these properties attracted its usage for high-end applications, such as manufacturing the fuselage and wing sections of an aircraft. Thermoplastic resin has an inherent ability to become softer once heated above the defined temperature range and retain their properties once they are cooled down.…”