Kinked crack paths in polycarbonate samples printed by fused deposition modelling using criss-cross patterns

Autor: Véronique Lazarus, Thomas Corre
Přispěvatelé: École Nationale Supérieure de Techniques Avancées (ENSTA Paris), Institut des Sciences de la mécanique et Applications industrielles (IMSIA - UMR 9219), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay-EDF R&D (EDF R&D), EDF (EDF)-EDF (EDF), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-EDF R&D (EDF R&D)
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Digital image correlation
Materials science
Computational Mechanics
02 engineering and technology
[SPI.MECA.MSMECA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Materials and structures in mechanics [physics.class-ph]
Plasticity
[SPI.MECA.SOLID]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Solid mechanics [physics.class-ph]
01 natural sciences
[SPI.MAT]Engineering Sciences [physics]/Materials
[SPI]Engineering Sciences [physics]
Fracture toughness
0203 mechanical engineering
[SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph]
0101 mathematics
Composite material
Anisotropy
Stress intensity factor
ComputingMilieux_MISCELLANEOUS
Linear elasticity
Isotropy
[PHYS.MECA]Physics [physics]/Mechanics [physics]
[SPI.MECA]Engineering Sciences [physics]/Mechanics [physics.med-ph]
010101 applied mathematics
020303 mechanical engineering & transports
Mechanics of Materials
Modeling and Simulation
Fracture (geology)
Zdroj: International Journal of Fracture
International Journal of Fracture, Springer Verlag, 2021, ⟨10.1007/s10704-021-00518-x⟩
International Journal of Fracture, Springer Verlag, 2021, pp.19-31. ⟨10.1007/s10704-021-00518-x⟩
International Journal of Fracture, 2021, pp.19-31. ⟨10.1007/s10704-021-00518-x⟩
ISSN: 0376-9429
1573-2673
Popis: International audience; Additive manufacturing is unquestionably gaining importance in industry. Due to the layer by layer deposit process, it usually leads to an anisotropic material. A question of importance to assess their resistance to fracture is whether Linear Elastic Fracture Mechanics can be used. In this paper, we investigate this point on polycarbonate printed by Fused Deposition Modelling focusing on a criss-crossed deposit pattern. Thanks to tensile and fracture experiments instrumented by Digital Image Correlation, the material is evidenced to be linear elastic until fracture, nearly isotropic in the 2D printing plane but with a strong fracture anisotropy, leading to systematic crack kinking along the weakest plane. The Stress Intensity Factors evolution is measured across the kink and shown to be in agreement with Amestoy-Leblond's formula. The fracture toughness is observed to be larger than the bulk value, in agreement with irreversible damage and plasticity that are clearly observable at the scale of the threads.
Databáze: OpenAIRE
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