RT Journal Article
T1 Revisiting Rotating Bending Fatigue in FFF Polymer Specimens Using Geometry-Based Cross-Section Properties for Stress Estimation.
A1 Bermudo-Gamboa, Carolina
A1 Bañón-García, Fermín
A1 Martín-Béjar, Sergio
A1 López Fernández, José Andrés
K1 Impresión 3D
K1 Materiales - Fatiga
AB The fatigue performance of polymer components fabricated by Fused Filament Fabrication (FFF) under cyclic loading is strongly influenced by their internal structure, defined by the infill pattern, density, and shell configuration, among others. Usual standard rotating bending fatigue procedures, such as those described in ISO 1143:2010, assume solid and homogeneous sections, leading to inaccurate stress estimations when applied to FFF specimens. In the absence of a specific fatigue standard for additive printed specimens, this work proposes and compares four analytical models for estimating the maximum surface stress in FFF-printed specimens subjected to rotating bending fatigue tests. The models vary in geometric fidelity, from a conventional solid-section assumption to an Analytical Geometry-Based model (AGB) that incorporates shell ovalization and non-uniform thickness. The accuracy of each method is evaluated by comparing the resulting S-N curves to experimental fatigue data obtained in this study and to results from existing literature.
PB IOP Publishing
YR 2026
FD 2026-03-31
LK https://hdl.handle.net/10630/46376
UL https://hdl.handle.net/10630/46376
LA eng
NO Carolina Bermudo Gamboa et al 2026 Meas. Sci. Technol. in press https://doi.org/10.1088/1361- 6501/ae5997
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 28 abr 2026