Title: Interlaminar Fracture Toughness of Hybrid Thermoplastic Composites made using Advanced Tape Layer Additive Manufacturing

Authors: Owen Libby, Roberto Lopez-Anido

DOI:

Abstract: Advanced Tape Layer Additive Manufacturing (ATLAM) is an emerging manufacturing method involving a robotic-arm-mounted printhead which extrudes short-fiber reinforced thermoplastic pellets and then lays continuous-fiber reinforced thermoplastic (CFRTP) tape onto the extruded thermoplastic layer. To determine the interlaminar fracture toughness at the interface between the additive manufactured (AM) material and the unidirectional CFRTP tape, ASTM standard test methods D5528, D6671, and D7905 were adapted to investigate this hybrid material. Mode I, two Mixed-Mode, and Mode II interlaminar fracture toughness were characterized for specimens manufactured with the hybrid thermoplastic composite with the goal of evaluating the effect of layer (bead) height. The AM material select was short Carbon Fiber/Polycarbonate with a fiber weight fraction of 20 %. The CFRTP material selected was unidirectional Carbon/Fiber Polycarbonate with a fiber weight fraction of 60 %. Three AM layer heights were investigated. The preliminary results are discussed for the interlaminar fracture toughness material properties of ATLAM produced composites. The results demonstrated both qualitative and quantitative consistency with expected results, validating the experimental method.

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Conference: SAMPE 2026

Publication Date: 2026/04/27

SKU: 69

Pages: 11

Price: $22.00