Characterization of Deformation States after Thermoforming of Long Discontinuous Fiber Composites (LDF<sup>™</sup>) by Using Ultrasonics — Jens Schuster (1993) | RDL Network
Long Discontinuous Fiber - Composites (LDF ™ ) were developed for thermoforming. This material with 5 cm long aligned fibers in a PEKK matrix has similar static mechanical properties as continuous fiber systems. A method is described to determine the elongation created by thermoforming without post-compression based on ultrasonic evaluation. During the experiments, a correlation between the plastic deformation of the material and the generated voids in the material was found.
R.T. Durai Prabhakaran, Saju Pillai, Samuel Charca, S.A. Oshkovr, Hans Knudsen, Tom Løgstrup Andersen, Jakob Ilsted Bech, Ole Thybo Thomsen, Hans Lilholt
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