Accession Number : AD0718812

Title :   Windows for External or Internal Hydrostatic Pressure Vessels. Part V. Conical Acrylic Windows Under Long-Term Pressure Application of 10,000 Psi.

Descriptive Note : Final rept. Jul 69-Jun 70,

Corporate Author : NAVAL CIVIL ENGINEERING LAB PORT HUENEME CALIF

Personal Author(s) : Stachiw,J. D. ; Moody,W. A.

Report Date : JAN 1971

Pagination or Media Count : 79

Abstract : Conical acrylic windows of 30-, 60-, 90-, and 120- and 150-degree includedangle and 0.500 to 1.250 t/D (thickness to minor diameter ratio) have beensubjected in their mounting flanges to 10,000 psi of hydrostatic pressurefor 500 and 1,000 hours at ambient room temperature. The displacement ofthe windows through the flange mounting has been recorded as a function oftime and plotted for the ready reference of the designer. The magnitude ofthe window displacement has been found to be a function of time, angle,temperature, t/ ratio and pressure. It is recommended that for safe singlesustained operation of 1,000 hour duration at 10,000 psi hydrostatic loadingat ambient temperature the windows should have an included conical angleequal or greater than 90 degrees and a minimum t/D RATIO OF 0.750. Forsustained loadings in excess of 1,000 hours the minimum t/D ratio is 1.000.(Author-PL)

Descriptors :   (*PRESSURE VESSELS, TRANSPARENT PANELS), (*TRANSPARENT PANELS, *ACRYLIC RESINS), UNDERWATER VEHICLES, CONICAL BODIES, HYDROSTATIC PRESSURE, FAILURE(MECHANICS)

Subject Categories : Marine Engineering
      Structural Engineering and Building Technology

Distribution Statement : APPROVED FOR PUBLIC RELEASE