WINDOWS FOR EXTERNAL OR INTERNAL HYDROSTATIC PRESSURE VESSELS. PART II. FLAT ACRYLIC WINDOWS UNDER SHORT-TERM PRESSURE APPLICATION
Abstract
Flat, disk-shaped acrylic windows of different thickness-to-diameter ratios have been tested to destruction under short-term hydrostatic loading at room temperatures, where short-term loading is defined as pressurizing the window hydrostatically on its high-pressure face at a 650-psi/minute rate till failure of the window takes place. Critical pressures and displacements of windows with thickness to effective diameter ratios less than 1.0 have been recorded and plotted. The critical pressures derived from testing flat windows in flanges with 1.5-inch, 3.3-inch, and 4.0-inch openings have been found applicable also to flanges with larger openings, so long as the larger windows are of the same t/D sub i and D sub o/D sub i ratios, where t is thickness of the window, D sub i is the clear opening in the flange and therefore the effective diameter of the window exposed to ambient atmospheric pressure and D sub o is overall diameter of the window face exposed to hydrostatic pressure. The performance of flat windows under short-term hydrostatic pressure has been found to be comparable to that of conical windows with included angle equal to, or larger than 90 degrees.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1967
- Accession Number
- AD0652343
Entities
People
- G. M. Dunn
- J. D. Stachiw
- K. O. Gray
Organizations
- Naval Facilities Engineering Service Center