The effect of fiber orientation on tool wear in edge-trimming of carbon fiber reinforced plastics (CFRP) laminates

Fatigue analysis and fracture toughness of graphene reinforced carbon fibre polymer composites

“…[48][49][50] The incorporation of strong nanofiller GnP at the weak interface of the resin-rich region between the fibres promotes additional toughening mechanism through crack deflection, [51][52][53] filler debonding, filler interlocking and filler pullout. 26,54 These consequently enhanced fibrematrix interaction and also the fracture toughness.…”

“…[19][20][21] In addition, high aspect ratio of GnPs along with presence of functional groups on their surface increase fibre-matrix interaction and hence improve interfacial bonding. [22][23][24][25][26] However, the use of increased amount of GnPs degrades mechanical properties because of the nanoparticles' agglomeration. [27][28][29][30][31] Though significant researches have been carried out to study the mechanical properties of GnPs-polymer composites, the study on the mechanical properties of GnP added FRPs is scarce.…”

Milling Performance of CFRP Composite and Atomised Vegetable Oil as a Function of Fiber Orientation

“…In the opposite case, when the fibers are perpendicular to the cutting direction (i.e., at 90 • TFOA), the tool must cut the fibers that have a higher Young's modulus than the matrix. For the 45 • fiber orientation, the fibers undergo both pulling and shearing [57]. It appears in Figure 6 that the resultant force increases proportionally to the feed rate, as usually expected when machining metals, polymers and composites since the chip thickness and cross section, and therefore the metal removal rates, are increased at a high feed rate [59].…”

“…Longer broken fibers were obtained at 0° TFOA while much shorter ones were generated at 45° and 90° TFOAs. The chip formation modes at 0° TFOA (i.e., delamination [16,57]) and at 45° and 90° TFOAs (i.e., compression-induced shear fracture perpendicular to fibers and inter-laminar shear fracture along the fiber/matrix interface [16,68] can explain the difference found in the broken fiber lengths. These broken fibers abrade the tool, which explains the high edge radius roundness observed when milling at 0° orientation (see Figure 10).…”

“…Microscope images of a sharp cutting-edge are shown in Figure 2a and microscope image of the same cutting edge after milling three slots (total cutting distance of 66 mm) is shown in Figure 2b. The tools were cleaned in acetone in an ultrasonic bath at 60 • C for 30 min (frequency: 1000 kHz, power: 60 W) [55,56], and [57]. The radius was estimated using the best-fit radius (highlighted circle) between the flank and the rake face of the worn tool.…”