Abstract
First a short description is given of the various aluminium alloys and their typical properties; after that the choice of alloys is noted in connection with their corrosion-resisting properties, fatigue properties, resistance to shocks and notch sensitivity: then there is a short summary of the connections of aluminium alloys one to another and of these alloys to steel; surface treatment and protective layers; a subdivision into groups, based upon the most noteworthy properties of aluminium alloys as used on board ship is made; following t his subdivision, a description is given of the principles underlying the attempt to define the, scantlings of aluminium-alloy superstructures and deckhouses; the influence of such structures to the longitudinal strength of the ship is studied; a list of requirements for the scantlings of light-metal superstructures and deckhouses is given with a new proposal embracing the critical of the existing rules and regulations; finally there is a short summary about the direction in which research on this point is necessary and desirable; then follows a bibliography.
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