The necessary information contains the attached paper:

Dear Shivdev Shahi please find the attached links. It might be useful for your research:

1) https://www.sciencedirect.com/topics/medicine-and-dentistry/poly-methyl-methacrylate

2) https://www.researchgate.net/publication/223098363_Pressure_dependence_of_the_elastic_constants_of_polymethyl_methacrylate

3) https://pubs.acs.org/doi/abs/10.1021/ma5017693?src=recsys&journalCode=mamobx

The necessary information contains the attached paper:

PMMA is predominantly a plastic that under continual load or mildly elevated temperatures goes into creep and eventually viscoelastic behavior. It is only elastic for a fairly small portion of it's stress-strain curve. I have been working with PMMA-related questions for several years and have a project where you can not only pull from the papers, but also the cited references. https://www.researchgate.net/project/Advancing-glassy-polymer-usage-in-pressure-vessels-and-viewports-optics

As a starting point:

Hassard, Richard S. (1973) MIL-HNDK-17A, Plastics For Aerospace Vehicles. Part II Transparent Glazing Materials. US Air Force Materials Laboratory, Air Force Systems Command, Wright-Patterson Air Force Base. Jan. 1973.

Kemper B. Criteria for Eliminating Cyclic Limit for PVHO Flat Disc Windows. Marine Technology and Standards, ASME/USCG 2013 3rd Workshop on Marine Technology and Standards pp. 214-223. doi:10.1115/MTS2013-0323.

Kemper, B., Cross, L. Heat Retention and Structural Integrity of Glassy Polymer Windows. Presented at the 15th Manned Underwater Vehicle Symposium, Marine Technology Society. New Orleans, La. February 2018 DOI: 10.13140/RG.2.2.12941.79841

Osswald, T. A. (2006). International Plastics Handbook: The Resource for Plastics Engineers. Cincinnatti, OH: Hanser Gardner Publications.

Richeton, J., Ahzi, S., Vecchio, K., Jiang, F., & Adharapurapu, R. (2006). Influence of temperature and strain rate on the mechanical behavior of three amorphous polymers: Characterization and modeling of the compressive yield stress. International Journal of Solids and Structures, 43(7-8), 2318-2335.

Bart Kemper Igor Novak Muhammad Saad Khan

Thank you very much.