Effect of Bubble Inclusions on the Mechanical Properties of Cast Polymethyl Methacrylate

Abstract

Bubbles are often present in acrylic plastic castings obtained from commercial sources. Since they may lower the strength of products machined from such castings, it is necessary to define quantitatively their effect on mechanical properties. The effect of bubbles on mechanical properties was evaluated using uniaxial tension and compression tests on 120 specimens machined from acrylic plastic castings. The tensile specimens failed at stress levels 7 to 30 percent lower than those observed in control specimens without bubbles. The stresses at which yielding under uniaxial compression took place were found to be the same as in the control specimens.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1972
Accession Number
AD0746862

Entities

People

  • Jerry D. Stachiw

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Acrylic Resins
  • Biomedical And Dental Materials
  • Classification
  • Compressive Strength
  • Diameters
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Mechanical Properties
  • Plastics
  • Polymethyl Methacrylate
  • Resins
  • Stresses
  • Tensile Strength
  • Tensile Stress
  • Yield Strength

Fields of Study

  • Materials science

Readers

  • Combustion Dynamics and Shock Wave Physics.
  • Mechanical Engineering/Mechanics of Materials.
  • Underwater engineering and Marine Technology.