Table C-8. Hydrostatic Test Data for Nominal 1.50-Inch (D;)- 2.25-Inch (D^) 

 Flat Acrylic Windows, Test Specimens 36-40 



(Sealed with grease; 



radio! cl 



eoronce 0.005 to 0.010 Inch 



nominal 



Dq/D; ratio 1.5) 





Parameter 





Spec 



imen Number 





Value 





















118 



119 



120 



121 



122 



Max 



Avg 



Min 



Thickness (in.) 



0.235 



0.237 



0.240 



0.237 



0.234 



0.240 



0.237 



0.234 



Dq (actual, in.) 



2.239 



2.237 



2.240 



2.237 



2.240 



2.240 



2.239 



2.237 



Temperature (°F) 



70 



68 



69 



68 



69 



70 



69 



68 



t/D| Ratio (actual) 



0.157 



0.158 



0.160 



0.158 



0.156 



0.160 



0.158 



0.156 



Pressurization Rate (psi/min) 



590 



497 



524 



627 



560 



627 



560 



497 



Pressure (psi) 



Axial D 



isplaceme 



nt of Cer 



ter Point 



on Window's Low- 



Pressure F 



ace (in.) 



]00 



0.002 



0.005 



0.001 



0.002 



0.004 



0.005 



0.003 



0.001 



200 



0.006 



0.007 



0.002 



0.002 



0.006 



0.007 



0.005 



0.002 



300 



0.007 



0.010 



0.002 



0.002 



0.008 



0.010 



0.006 



0.002 



400 



0.009 



0.014 



0.003 



0.003 



0.011 



0.014 



0.011 



0.003 



500 



0.013 



0.017 



0.003 



0.004 



0.015 



0.017 



0.010 



0.003 



600 



0.016 





0.009 



0.009 



0.018 



0.018 



0.014 



0.009 



700 



0.019 





0.012 



0.012 





0.019 



0.014 



0.012 



800 



0.024 

















900 



















1,000 



















Displacement at Failure (in.) 



0.046 



0.045 



0.048 



0.053 



0.064 



0.064 



0.051 



0.045 



Pressure at Failure (psi) 



840 



642 



733 



702 



695 



840 



723 



642 



Notes: 



1. Thin grease seal coating. 



2. Amount of cement used on deflection pin may have significant effect on thin windows. 



56 



