RAPID FATIGUE CHARACTERIZATION OF ADDITIVELY MANUFACTURED POLYMER COMPOSITES USING INFRARED THERMOGRAPHY. [Poster #14]

High cycle fatigue (HCF) in composite structures leads to damage accumulation and associated stiffness
degradation, which are challenging to quantify. This work uses a medium wave infrared to monitor selfheating in chopped carbon fiber/acrylonitrile butadiene styrene specimens subjected to tension-tension
fatigue loading. An innovative rapid testing protocol that correlates the generated full-field temperature
maps and stiffness degradation data has been developed providing a comprehensive understanding of
material behavior under cyclic loading. Results contribute to the fundamental understanding of HCF in
composite materials and develop more accurate predictive models for fatigue life. Rapid testing has allowed
correlating process parameters with the microstructure and structural integrity of additively manufactured
(AM) composites.
EXTENDED ABSTRACT