Problems Involved in the Choice and Use of Materials in Airplane Construction (1932)
NASA Technical Reports Server (NTRS) · leaf 30
II.A.C.A. Technical Memorand-oin lIo.658 Figs.11,16,21. Fi^p-.ll Decrease in Originqil stat. strength and 4G|- elasticity due to S ! ^'^i^-mi '■Corro led corrosion. Mechanical P:Oi#>%^;'^M—- ener^^y ^2 " about 1/4 f-j_. Material: duralumin sheet (1 mm thick). Corrosion period: 48 days in 870 (D… … 0 C.51.C 1.5 2.0 2.5 3.0 3.54.C mm Thickness of sheet 03 50, ^ ^ Fig.21 Strength and ^0 hard) ! Ma|;naliuin MG7( elongation of ^ -f 4-.-_JL_-+-' "naj:;7naliuin" , harder than 4CK^-—^ duralumin 681A, plotted against the time of :^a-^.r^. 301-- U corrosion. Corrosive Ihiralinnin 6plA 10 action "by a…
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