Fracture toughness in additive manufacturing by selective laser sintering: an overview | Zendy

Marșavina Liviu | Zendy; Stoia Dan Ioan | Zendy; Emanoil Linul | Zendy

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Fracture toughness in additive manufacturing by selective laser sintering: an overview

Author(s) -

Marșavina Liviu,

Stoia Dan Ioan,

Emanoil Linul

Publication year - 2021

Publication title -

material design & processing communications

Language(s) - English

Resource type - Journals

ISSN - 2577-6576

DOI - 10.1002/mdp2.254

Subject(s) - selective laser sintering , materials science , fracture toughness , sintering , bending , composite material , cantilever , fracture (geology) , laser , fracture mechanics , flexural strength , structural engineering , optics , engineering , physics

This paper presents manufacturing, testing, and computing steps for determining the fracture toughness property of polyamide PA 2200 processed by laser sintering using different process parameters. The design of the samples was conducted according to ASTM D5045‐99 and ASTM D5528‐01, and the fracture tests consist of four‐point bending in symmetric and asymmetric configuration and double cantilever beam test. The process parameters selected as variables were in‐plane orientation, spatial orientation, energy density of the process, and induced structural defects. The results provide an extended view regarding the variation of fracture properties when the manufacturing conditions in laser sintering are changed.

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