Characterization of long fiber thermoplastic/metal laminates

Academic Article


  • Long fiber thermoplastic (LFT) composite/metal laminate (LML) is a hybrid composite consisting of alternate layers of metals such as aluminum and an LFT composite, which combines advantages from both the constituents. The LFT/Al laminates (LMLs) were processed by compression molding and were characterized for their Young's modulus, mechanical strength, and low-velocity impact (LVI) properties. The average values of specific elastic modulus and specific tensile strength were approximately 20 GPa/(gcm-3) and 108.5 MPa/(gcm -3), respectively. Failure mechanisms included delamination between LFT composite and Al, fiber fracture and pullout in LFT composite, and shear fracture of aluminum and LFT composite layers. Rule-of-mixtures (ROM) predictions of laminate properties in tension compared well with the experimental values. Specific perforation energy of the laminates determined by LVI tests was 7.58 J/(kgm-2), which is significantly greater than that of the LFT composite alone, 1.72 J/(kgm-2). Overall, the LML showed significant improvement in the properties as compared to the LFT composite. © 2008 Springer Science+Business Media, LLC.
  • Published In

    Digital Object Identifier (doi)

    Author List

  • Kulkarni RR; Chawla KK; Vaidya UK; Koopman MC; Eberhardt AW
  • Start Page

  • 4391
  • End Page

  • 4398
  • Volume

  • 43
  • Issue

  • 13