On the use of different types of standardized dogbone specimens for tensile tests of PLA printed by MEX: A comparative analysis
The mechanical properties of 3D-printed parts produced by material extrusion (MEX) have been extensively investigated in recent years. However, there are no standards defining the test conditions and specimens' geometry, specifically for the parts obtained by this technology. The dogbone specim...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
University of Belgrade - Faculty of Mechanical Engineering, Belgrade
2025-01-01
|
| Series: | FME Transactions |
| Subjects: | |
| Online Access: | https://scindeks-clanci.ceon.rs/data/pdf/1451-2092/2025/1451-20922502335C.pdf |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850156633311674368 |
|---|---|
| author | Cojocaru Vasile Frunzaverde Doina Marginean Gabriela |
| author_facet | Cojocaru Vasile Frunzaverde Doina Marginean Gabriela |
| author_sort | Cojocaru Vasile |
| collection | DOAJ |
| description | The mechanical properties of 3D-printed parts produced by material extrusion (MEX) have been extensively investigated in recent years. However, there are no standards defining the test conditions and specimens' geometry, specifically for the parts obtained by this technology. The dogbone specimens, as defined by ISO 527-2 and ASTM D638, are mainly used for tensile tests of 3D printed polymers. This study presents a comparative analysis of four types of dogbone specimens made from polylactic acid (PLA) by material extrusion. Experimental results showed only slight variations (up to 2,34%) in the ultimate tensile strength (UTS) across the different types of specimens. On the other hand, they revealed the occurrence of failure at the boundary of the gauged section of the specimens, caused by a stress concentration in this area (as shown by numerical simulations) combined with irregularities and voids generated by the 3D printing strategy. |
| format | Article |
| id | doaj-art-72d81a913a6e4f7895c939ea76f82edd |
| institution | OA Journals |
| issn | 1451-2092 2406-128X |
| language | English |
| publishDate | 2025-01-01 |
| publisher | University of Belgrade - Faculty of Mechanical Engineering, Belgrade |
| record_format | Article |
| series | FME Transactions |
| spelling | doaj-art-72d81a913a6e4f7895c939ea76f82edd2025-08-20T02:24:26ZengUniversity of Belgrade - Faculty of Mechanical Engineering, BelgradeFME Transactions1451-20922406-128X2025-01-0153233534310.5937/fme2502326C1451-20922502335COn the use of different types of standardized dogbone specimens for tensile tests of PLA printed by MEX: A comparative analysisCojocaru Vasile0Frunzaverde Doina1Marginean Gabriela2Babeș-Bolyai University, Department of Engineering Science, Reșița, RomaniaBabeș-Bolyai University, Department of Engineering Science, Reșița, RomaniaWestphalian University of Applied Sciences, Institute of Mechanical Engineering, Gelsenkirchen, GermanyThe mechanical properties of 3D-printed parts produced by material extrusion (MEX) have been extensively investigated in recent years. However, there are no standards defining the test conditions and specimens' geometry, specifically for the parts obtained by this technology. The dogbone specimens, as defined by ISO 527-2 and ASTM D638, are mainly used for tensile tests of 3D printed polymers. This study presents a comparative analysis of four types of dogbone specimens made from polylactic acid (PLA) by material extrusion. Experimental results showed only slight variations (up to 2,34%) in the ultimate tensile strength (UTS) across the different types of specimens. On the other hand, they revealed the occurrence of failure at the boundary of the gauged section of the specimens, caused by a stress concentration in this area (as shown by numerical simulations) combined with irregularities and voids generated by the 3D printing strategy.https://scindeks-clanci.ceon.rs/data/pdf/1451-2092/2025/1451-20922502335C.pdfmaterial extrusion (mex)fused deposition modelling (fdm)tensile testsdogbone specimenultimate tensile strength (uts)polylactic acid (pla) |
| spellingShingle | Cojocaru Vasile Frunzaverde Doina Marginean Gabriela On the use of different types of standardized dogbone specimens for tensile tests of PLA printed by MEX: A comparative analysis FME Transactions material extrusion (mex) fused deposition modelling (fdm) tensile tests dogbone specimen ultimate tensile strength (uts) polylactic acid (pla) |
| title | On the use of different types of standardized dogbone specimens for tensile tests of PLA printed by MEX: A comparative analysis |
| title_full | On the use of different types of standardized dogbone specimens for tensile tests of PLA printed by MEX: A comparative analysis |
| title_fullStr | On the use of different types of standardized dogbone specimens for tensile tests of PLA printed by MEX: A comparative analysis |
| title_full_unstemmed | On the use of different types of standardized dogbone specimens for tensile tests of PLA printed by MEX: A comparative analysis |
| title_short | On the use of different types of standardized dogbone specimens for tensile tests of PLA printed by MEX: A comparative analysis |
| title_sort | on the use of different types of standardized dogbone specimens for tensile tests of pla printed by mex a comparative analysis |
| topic | material extrusion (mex) fused deposition modelling (fdm) tensile tests dogbone specimen ultimate tensile strength (uts) polylactic acid (pla) |
| url | https://scindeks-clanci.ceon.rs/data/pdf/1451-2092/2025/1451-20922502335C.pdf |
| work_keys_str_mv | AT cojocaruvasile ontheuseofdifferenttypesofstandardizeddogbonespecimensfortensiletestsofplaprintedbymexacomparativeanalysis AT frunzaverdedoina ontheuseofdifferenttypesofstandardizeddogbonespecimensfortensiletestsofplaprintedbymexacomparativeanalysis AT margineangabriela ontheuseofdifferenttypesofstandardizeddogbonespecimensfortensiletestsofplaprintedbymexacomparativeanalysis |