Acrylic Plastic Viewpoint for Ocean Engineering Applications. Volume I. Sections 1-10.
NAVAL UNDERSEA CENTER SAN DIEGO CA
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For safe performance, viewpoints in pressure vessels for human occupancy require windows that are designed according to conservative engineering principles and fabricated from optical material with proven structural properties. This design handbook presents to the prospective viewport designer a succinct summary of existing data and recommended guidelines for using these data in the design, fabrication, and acceptance testing of acrylic plastic windows. Guidelines are presented for windows operating in the range of -15 to 20,000 poundss per square inch and -40 to 151 F. By utilizing these guidelines a cyclic fatigue life of 10,000 cycles with 40,000 hours of sustained pressurization over a period of 10 years can be assured. Greater cyclic fatigue life or longer sustained loading durations can also be achieved, but the designer must develop design criteria whose safety factors exceed those incorporated in the design guidelines of this handbook. Specifications for acrylic plastic are given to ensure procurement of material whose performance will satisfy the structural, optical, and longevity criteria of this handbook. Samples of quality control forms are also included which, when filled completedly out, will constitute acceptable documentation for subsequent safety design review and certification procedures. Author
- Submarine Engineering