![]() Treatment reduced the crazing stress threshold of PMMA from 20% to 35% and produced a threefold increase in its sensitivity to stress. The results showed that the alcohol solvent influenced PMMA through physical diffusion, whereas machining primarily affected crazing growth via residual stress. The research focused on polymethyl methacrylate (PMMA), both regular and oriented, and the impact of machining and alcohol solvents on the formation of crazing. ![]() In this study, the tensile test method was employed to examine the initiation and progression of crazing. The concentrated stress caused by machines and the solvent atmosphere created during machining exacerbates the formation of crazing. Polymer crazing is typically a precursor to damage and considerably reduces the mechanical performance of polymer materials.
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