Effects of Build Parameters on Additive Materials

Abstract

This project investigates the effects of build parameters on the properties of a thermoplastic used in fused deposition modeling (FDM) technology at MIT Lincoln Laboratory. Dogbone and cubed shaped FDM samples were produced with varying raster angle, build orientation, beadwidth, and number of plies. Tensile strength experiments are presented and show that unlike typical polymers FDM parts fail due to brittle fracture, while parts built with larger beadwidth are more ductile. Structural simulations are presented with the samples considered as orthotropic composite laminates. Thermal expansion experiments show that FDM parts expand15% less than bulk material. Heat transfer simulations are presented for samples with various raster angle orientations and temperatures between 55 deg C to 85 deg C.

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Document Details

Document Type
Technical Report
Publication Date
Oct 30, 2013
Accession Number
AD1034643

Entities

People

  • Anthony Decicco
  • Jessica Faust

Organizations

  • MIT Lincoln Laboratory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Gaps
  • Coordinate Systems
  • Fused Deposition Modeling
  • Gages
  • Geometry
  • Intellectual Property
  • Laminates
  • Manufacturing
  • Materials
  • Materials Science
  • Modulus Of Elasticity
  • Orientation (Direction)
  • Shear Modulus
  • Stiffness
  • Strain Gages
  • Tensile Strength
  • Tensile Testing

Readers

  • Reinforced Composite Materials