B. M. Axilrod, M. A. Sherman, V. Cohen, I. Wolock
The effects of approximately 50-percent biaxial stretch-forming on the tensile and crazing properties of polymethyl-methacrylate were investigated. The materials used were commercial cast polymethyl-methacrylate sheets, nominally. 0.15 inch thick, of both general-purpose and heat-resistant grades.
An Adobe Acrobat (PDF) file of the entire report: