Vibration behaviour of additively manufactured AlSi10Mg specimens DOI Open Access
Claus‐Dieter Ohl, Emanoil Linul, Sergiu-Valentin Galațanu

et al.

IOP Conference Series Materials Science and Engineering, Journal Year: 2024, Volume and Issue: 1319(1), P. 012027 - 012027

Published: Oct. 1, 2024

Abstract Additive manufacturing is in continuous development, and the obtained components still have some shortcomings. The vast majority of mechanical characterizations are performed on polymer materials, using particular material extrusion process, while metallic face not negligible deficiencies. This paper presents an experimental investigation vibration behaviour selective laser melting (SLM) 3D printed specimens. specimens were “on-edge” from AlSi10Mg aluminium alloys subjected to fatigue tests. By electrodynamic shaker, controller, acceleration transducer, vibrometer, tests been data analysed. After tests, a correlation was by finite element analysis (FEA). damping coefficients (alpha beta) data. These then used check accuracy each FEA model. results reveal between structural anisotropy additive specimens, their impact high-cycle performance.

Language: Английский

Compressive Performance of 3D-Printed Lightweight Structures: Infill Density Optimization via Multiple-Criteria Decision Analysis method DOI Creative Commons

Cristina Vălean,

Emanoil Linul, Dipen Kumar Rajak

et al.

Results in Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 103936 - 103936

Published: Jan. 1, 2025

Language: Английский

Citations

2
Tensile, flexural and fracture properties of MEX-printed PLA-based composites DOI Creative Commons
Dan Ioan Stoia, Emanoil Linul

Theoretical and Applied Fracture Mechanics, Journal Year: 2024, Volume and Issue: 132, P. 104478 - 104478

Published: May 22, 2024

Due to the continuous development of material extrusion-additive manufacturing (MEX-AM) technology, fracture behavior polymeric parts, and especially their associated composites, presents some shortcomings but also a challenge in field. In this paper, properties non-reinforced (NR) reinforced Polylactic Acid (PLA) samples manufactured by MEX-AM process are investigated through tensile, flexural mechanics tests. The with glass fibers (GF-PLA), carbon (CF-PLA) bronze particles (BP-PLA), tested parallel (named FLAT for all tests) normal UPRIGHT tensile test, ON-EDGE layer growth (LG). It was found that regardless type LG significantly influence mechanical collapse modes MEX-printed samples. obtained parallel-LG load is favorable tests, normal-LG Overall, NR-PLA gives best strength, strain energy absorption properties, CF-PLA stands out as stiffest material, while BP-PLA minimum performances almost properties. macroscopic analyzes fractured clearly highlight distinct failure mechanisms each LG. From analysis macrostructural images, identified most brittle ductile.

Language: Английский

Citations

10
Compressive behavior of additively manufactured lightweight structures: infill density optimization based on energy absorption diagrams DOI Creative Commons

Cristina Vălean,

Liviu Marşavina, Emanoil Linul

et al.

Journal of Materials Research and Technology, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 1, 2024

Language: Английский

Citations

3
Cyclic Fatigue Failure of Perforated 3D-Printed Polylactide (PLA) Specimens by Inserted Pin Loading DOI Open Access

J. S. Hertel,

Y. W. Kwon,

Delf Sachau

et al.

Materials, Journal Year: 2024, Volume and Issue: 17(22), P. 5394 - 5394

Published: Nov. 5, 2024

The failure of 3D-printed Polylactide (PLA) specimens with circular holes was studied under tensile and cyclic loading, respectively, by an inserted pin. Experiments were conducted for the perforated PLA various print angles from 0° to 90°, as well [0°/90°]s [0°/±45°/90°]s. hole locations varied along specimens. showed two different modes: one through lines other between lines. Different resulted in stresses pin loading. tests very similar S-N data applied normalized their if mode On hand, distinctly separated data, even stresses. stresses, locations, orientations successfully predicted using criterion that is based on both stress gradient conditions. A proposed mathematical interpolation equation provided good estimations curves once known 90°

Language: Английский

Citations

0
Effect of different parameters on mode I fracture toughness of resin samples manufactured by DLP DOI Open Access

Marian Vasile Baban,

Alexandru Viorel Coşa,

Emanoil Linul

et al.

IOP Conference Series Materials Science and Engineering, Journal Year: 2024, Volume and Issue: 1319(1), P. 012018 - 012018

Published: Oct. 1, 2024

Abstract Additive manufacturing is spreading rapidly in almost all industries, from household to advanced engineering. Components produced by Digital Light Processing (DLP) are not comprehensively characterized, but exceed the capabilities of many AM processes. Its advantages include ability produce highly complex designs, superior precision, fast printing and lower operating costs. The present paper investigates mode I fracture toughness (K IC ) UV-sensitive resin specimens obtained through DLP process. Single edge notch bending (SENB) specimen were 3D printed tested according ASTM D5045 standard. influence orientation-PO (0°, 45° 90°), color-RC (white, black transparent) corrosive environment-CE (air, water saline solution) was studied. It observed that studied parameters have some effect on properties. highest K values for 45°-PO, white-RC (1.88 MPa•m 0.5 solution-CE (2.24 ). However, greatest highlighted RC (∼92%), while CE (∼32%) shows a minimal effect. surface investigated samples influenced parameters.

Language: Английский

Citations

0
Vibration behaviour of additively manufactured AlSi10Mg specimens DOI Open Access
Claus‐Dieter Ohl, Emanoil Linul, Sergiu-Valentin Galațanu

et al.

IOP Conference Series Materials Science and Engineering, Journal Year: 2024, Volume and Issue: 1319(1), P. 012027 - 012027

Published: Oct. 1, 2024

Abstract Additive manufacturing is in continuous development, and the obtained components still have some shortcomings. The vast majority of mechanical characterizations are performed on polymer materials, using particular material extrusion process, while metallic face not negligible deficiencies. This paper presents an experimental investigation vibration behaviour selective laser melting (SLM) 3D printed specimens. specimens were “on-edge” from AlSi10Mg aluminium alloys subjected to fatigue tests. By electrodynamic shaker, controller, acceleration transducer, vibrometer, tests been data analysed. After tests, a correlation was by finite element analysis (FEA). damping coefficients (alpha beta) data. These then used check accuracy each FEA model. results reveal between structural anisotropy additive specimens, their impact high-cycle performance.

Language: Английский

Citations

0