TEST PROGRAM 



It is conjectural whether the titfiiium alley selected for j'^LVIN 

 will be cle,33C(l as a Category 2 or a Category 3 Matex-ial as specified 

 ty ilAVSHIPS 0900-028-2010 (l July 1967). RegM.rdleG.- of the categor^^' 

 specified a riodel test to destruction is rx-cessary, and the larger the 

 model the nore detailed the evaluation. Thus a full scale niodsi v/ould 

 be highly desirable. Further a full scale model would partially satisfy 

 the structural testing requirements of a Category 3 i.aterirBl. Tliereforo 

 it is reconmiended that a full scale model bo tested 'o destruction. -C 

 (Existing test facilities arc adequate for this test}. T/o prototype 

 hulls should be constructed and the one with, the worst dlnensional 

 tolerances (out-of spxaericity, etc) should be selected for test". The 

 results of this test should provide a mirJ.mijn collapse pressure for the 

 remaining sphere, and (should also verify the design criteroay In addition 



""" " i i 



to the collapse, tests or. the sphere, a proof test on the rorraining sphere 1 < "" ' 

 would also be required. ' ■ 



-The preliminary tests progra:ii as presently envisioned would include 

 cyclic, creep and hydrostatic collapse tests of the one pressure sphere, 

 and a proof test to approximately 1.1 times tlie opera !.ing duoth of the 

 remaining sphere. A detailed test program will be developed at a future 

 date. 



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