Direct photobleaching measurements show that the second stress overshoot after partial unloading in PMMA glass is not caused by a lower molecular mobility, pointing to deformation-induced changes in modulus as the missing mechanism.
D., Linear Stress Relaxation and Probe Reorientation: Comparison of the Segmental Dynamics of Two Glassy Polymers during Physical Aging
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Multi-step deformation experiment and development of a model for the mechanical behavior of polymeric glasses
Direct photobleaching measurements show that the second stress overshoot after partial unloading in PMMA glass is not caused by a lower molecular mobility, pointing to deformation-induced changes in modulus as the missing mechanism.