ISSN: 1945-7553
CODEN: JTEVAB
Page Count: 8

Fracture Toughness of Stretched Acrylic Plastic

Sutton, SA
Materials/computer engineer, Naval Research Laboratory, Washington, D.C.

Abstract

This paper presents the method and results of a parametric study of instability toughness, as measured by the plane-strain K_Ic and plane-stress K_c fracture toughness of a multiaxially stretched acrylic plastic. A large number of computer-controlled tests were conducted with the compact tension specimen under high compliance loading/load control. These tests reveal the significant effects on K_c and K_Ic of a wide range of loading rates, specimen thicknesses, and specimen geometry. A direct and immediate application of the results is the recommendation of a new fracture toughness acceptance test for these materials.

Keywords:
mechanical properties, fracture strength, toughness, acrylic resins, materials specifications, stretched acrylic

Paper ID: JTE10579J
DOI: 10.1520/JTE10579J
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