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<p>The fracture toughness of internal geometric features of AM composites is characterized through an instrumented cutting methodology. Vibration-assisted printing is used to print high particle concentration composites. Y-shaped cutting is performed, enabling targeted fracture characterization experiments on the roads and welds. Scanning electron microscopy is used to determine the true thickness of cut printed materials. <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="43579_2025_845_Article_IEq1.gif" Format="GIF" Height="16" Rendition="HTML" Resolution="72" Type="Linedraw" Width="33" /> </InlineMediaObject> <EquationSource Format="TEX">\({G}_{cut}\)</EquationSource> <EquationSource Format="MATHML"><math> <msub> <mi>G</mi> <mrow> <mi mathvariant="italic">cut</mi> </mrow> </msub> </math></EquationSource> </InlineEquation> is quantified for each AM feature. The techniques used in this work demonstrate a methodology to directly characterize the fracture resistance of an AM composite, improving our ability to learn about the phenomena that govern the fracture toughness heterogeneities often observed in AM parts.</p> Graphical abstract <p></p>

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Direct fracture toughness measurement of additively manufactured composites through Y-shaped cutting

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年10月6日

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  • Tyler J. Roberts,
  • Sarah Gover,
  • Finn Blankenburg,
  • Jack Czyz,
  • Sophie Bates,
  • Keegan L. Duffin,
  • Amanda M. Cabral,
  • Juan M. Vazquez,
  • Stephen P. Beaudoin,
  • Chelsea S. Davis

摘要

The fracture toughness of internal geometric features of AM composites is characterized through an instrumented cutting methodology. Vibration-assisted printing is used to print high particle concentration composites. Y-shaped cutting is performed, enabling targeted fracture characterization experiments on the roads and welds. Scanning electron microscopy is used to determine the true thickness of cut printed materials. \({G}_{cut}\) G cut is quantified for each AM feature. The techniques used in this work demonstrate a methodology to directly characterize the fracture resistance of an AM composite, improving our ability to learn about the phenomena that govern the fracture toughness heterogeneities often observed in AM parts.

Graphical abstract