Advances in Acrylics and Expansion of PVHO Window Cyclic Life - (PPT)

摘要

Acrylics (Poly Methyl Methalcrylate, or PMMA)are a proven, reliable material for submersible viewports. The current codes and standards reflect a first-generation development of defining a nonmetallic for pressure vessel application. This is part of an effort to potentially expand the design parameters in viewports and application of acrylics. This paper focuses on the advances in understanding PMMA fatigue and its application to viewport design.