Affiliation:
1. GIEMA, Universidad Industrial de Santander, Escuela de Ingeniería Mecánica, Carrera 27 calle 9, Bucaramanga 680002, Colombia
2. GIC, Universidad Industrial de Santander, Escuela de Ingeniería Mecánica, Carrera 27 calle 9, Bucaramanga 680002, Colombia
Abstract
This paper shows how temperature influences impact energy for continuous fiber additively manufactured (AM) polymer matrix composites. AM composites were fabricated with a nylon-based matrix and four continuous reinforcements: fiberglass, high-temperature fiberglass (HSHT), Kevlar, and carbon. The tested temperatures ranged from −40 to 90 °C. The chosen printed configuration for the lattice structure and fiber volume was the configuration that was found to perform the best in the literature, with a volumetric fiber content of 24.2%. Impact tests showed that the best response was fiberglass, HSHT, Kevlar, and carbon, in that order. The impact resistance was lowered at temperatures below ambient temperatures and above 50 °C. Additionally, each material’s impact energy was adjusted to third-degree polynomials to model results, with correlation factors above 92%. Finally, the failure analysis showed the damage mechanisms of matrix cracking, delamination in the printing direction, fiber tearing, and fiber pulling as failure mechanisms.
Subject
Industrial and Manufacturing Engineering,Mechanical Engineering,Mechanics of Materials
Cited by
2 articles.
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