IT) 



I -^X Technical Note N-l)-i4-6 



^ EFFECTS OE-THE-BEEP-GeEA!r:E]WIR0NMEKT ON MATERIALS - A PROGRESS REPORT 



30 Jiily 1962 



^^ 



?S^'S^^ " ' ' '^■">- "--"^ ~# .?■? i- 



/ ''^\ 



X 





/■ 





JUL 191971 



'X U. S. NAVAL CIVIL ENGIN ^ING LABORATORY 

 — PuiL Huyueme,"T^alifornia 



AUG 1 3 ©52 



