Next Article in Journal
High Temperature Interaction of Si-B Alloys with Graphite Crucible in Thermal Energy Storage Systems
Next Article in Special Issue
Estimation of an Upper Bound to the Value of the Step Potentials in Two-Layered Soils from Grounding Resistance Measurements
Previous Article in Journal
A Compressive Peak Strength Model for CFRP-Confined Thermal Insulation Materials under Elevated Temperature
Previous Article in Special Issue
Elastic Asymmetry of PLA Material in FDM-Printed Parts: Considerations Concerning Experimental Characterisation for Use in Numerical Simulations
Open AccessArticle

Considerations on the Applicability of Test Methods for Mechanical Characterization of Materials Manufactured by FDM

Department of Manufacturing Engineering, Universidad Nacional de Educación a Distancia (UNED), 28040 Madrid, Spain
*
Author to whom correspondence should be addressed.
Materials 2020, 13(1), 28; https://doi.org/10.3390/ma13010028
Received: 15 November 2019 / Revised: 5 December 2019 / Accepted: 17 December 2019 / Published: 19 December 2019
The lack of specific standards for characterization of materials manufactured by Fused Deposition Modelling (FDM) makes the assessment of the applicability of the test methods available and the analysis of their limitations necessary; depending on the definition of the most appropriate specimens on the kind of part we want to produce or the purpose of the data we want to obtain from the tests. In this work, the Spanish standard UNE 116005:2012 and international standard ASTM D638–14:2014 have been used to characterize mechanically FDM samples with solid infill considering two build orientations. Tests performed according to the specific standard for additive manufacturing UNE 116005:2012 present a much better repeatability than the ones according to the general test standard ASTM D638–14, which makes the standard UNE more appropriate for comparison of different materials. Orientation on-edge provides higher strength to the parts obtained by FDM, which is coherent with the arrangement of the filaments in each layer for each orientation. Comparison with non-solid specimens shows that the increase of strength due to the infill is not in the same proportion to the percentage of infill. The values of strain to break for the samples with solid infill presents a much higher deformation before fracture. View Full-Text
Keywords: additive manufacturing; FDM; ABS; anisotropy; infill density; layer orientation; ASTM D638–14:2014; ISO 527–2:2012 additive manufacturing; FDM; ABS; anisotropy; infill density; layer orientation; ASTM D638–14:2014; ISO 527–2:2012
Show Figures

Figure 1

MDPI and ACS Style

García-Domínguez, A.; Claver, J.; Camacho, A.M.; Sebastián, M.A. Considerations on the Applicability of Test Methods for Mechanical Characterization of Materials Manufactured by FDM. Materials 2020, 13, 28.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop