Stress and strain at onset of crazing of polymethyl methacrylate at various temperatures

M. A. Sherman
naca-tn-2778
Sep 1952


The stress and strain at the onset of crazing of polymethyl methacrylate were determined at 23, 50, and 70 degrees C. The materials tested were commercial cast polymethyl-methacrylate sheets of both general-purpose and heat-resistant grades. Most of the tests were made on samples 0.15 inch thick. Load-elongation graphs were made during the tests and the onset of crazing was observed visually and noted on the graph.

An Adobe Acrobat (PDF) file of the entire report:
http://naca.central.cranfield.ac.uk/reports/1952/naca-tn-2778.pdf