Corrosion Embrittlement of Duralumin I Practical Aspects of the Problem
A 1928 NASA technical report on corrosion embrittlement of duralumin, an aluminium alloy, written as a practical engineering study for aircraft builders and metallurgists. Its pictures are plain black-and-white photographs and graphs: lettered specimen strips showing cracks, a fatigue curve plotted on a log scale, and a riveted lattice panel with corroded plating. A designer might take from them the look of aged metal, cracked surfaces and industrial engineering diagrams.
