Crack Propagation in Flexural Testing of Additive Manufactured Acrylonitrile Butadiene Styrene

  • Y. Rosenthal Afeka, Tel-Aviv Academic College of Engineering, Department of Mechanical Engineering, Israel
  • A. Stern Afeka, Tel-Aviv Academic College of Engineering, Department of Mechanical Engineering, Israel
  • I. Treivish Nuclear Research Center - Negev, Beer Sheva, Israel
  • D. Ashkenazi School of Mechanical Engineering, Tel Aviv University, Israel
Keywords: Additive manufacturing, FDM, ABS, Mechanical properties, Three-point bending flexural test, Crack propagation


Fused Deposition Modelling (FDM) is one of the most important Additive Manufacturing (AM) technologies. This is a technology suitable for various engineering applications and currently used with many types of thermoplastic materials including Acrylonitrile Butadiene Styrene (ABS). AM-FDM printed ABS possesses an inherent capacity for property modifications as a function of printing parameters. The main goal of the present ongoing research project is to estimate the strength of the AM-FDM printed ABS for varying printing process parameters. In the present study, the mechanical and structural characterizations of AM-FDM ABS were evaluated by light microscopy and mechanical testing. Three-point bend flexural test results revealed the mechanical properties as well as the fracture behaviour according to the dimensions and printing strategies of the build-on specimens. An innovative transmitted-light microscopy experimental method was developed and utilized to investigate the crack propagation behaviour under bending.

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