About this Materials Science article
Stiffness and damping behavior of 3D printed specimens by Francisco Medel; Javier Abad; Víctor Esteban is a Materials Science article available to read on EtoBox.
In this work, we analyzed a variety of metrics derived from Laser Doppler Vibrometry (LDV) characterization of 3D printed rectangular prisms. The metrics of interest were natural frequencies and amplitudes of first and second bending vibration modes, equivalent elastic moduli, damping ratios and areas of transmissibility functions. To explore the influence of printing process parameters on the dynamical behavior and, therefore, on the aforementioned metrics, 48 different combinations were considered, including build orientation, raster angle, nozzle temperature, print speed and layer height as relevant parameters. Thus, 96 polylactic acid (PLA) rectangular prisms were fabricated and LDV characterization was carried out. Based on the equivalent elastic modulus metrics, it was possible to corroborate the influence of printing process parameters on the mechanical performance, being raster angle, build orientation and nozzle temperature the most influential parameters. Likewise, the analysis of damping ratios served to assess the degree of interfilament bonding of 3D printed rectangular prisms. Thus, rectangular prims that exhibited high damping ratios also showed evident lack of adhes
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- Francisco Medel; Javier Abad; Víctor Esteban
- Publisher
- Elsevier BV
- Published
- 2022
- Language
- EN
- Field
- Materials Science (Physical Sciences)