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The Compressive Strength of Duralumin Columns of Equal Angle Section

Description: "This report presents a chart giving the compressive strength of duralumin columns of equal angle section. The data used in the construction of the chart were obtained from various published sources and were correlated with theory in the range where secondary failure occurred. Appendices are included giving excerpts from Army and Navy specifications for duralumin and approximate formulas for the properties of the equal angle section" (p. 1).
Date: March 1932
Creator: Lundquist, Eugene E.
Partner: UNT Libraries Government Documents Department
open access

Experiments on the distribution of fuel in fuel sprays

Description: The distribution of the fuel in sprays for compression-ignition engines was investigated by taking high-speed spark photographs of fuel sprays produced under a wide variety of conditions, and also by injecting them against pieces of Plasticine. A photographic study was made of sprays injected into evacuated chambers, into the atmosphere, into compressed air, and into transparent liquids. Pairs of identical sprays were injected counter to each other and their behavior analyzed. Small high-veloci… more
Date: March 1932
Creator: Lee, Dana W.
Partner: UNT Libraries Government Documents Department
open access

Rapid Chemical Test for the Identification of Chromium-Molybdenum Steel

Description: This note describes a simple, rapid, qualitative test which can be applied to solutions of drilling or chips for the identification of chromium-molybdenum steel. The test is based on the orange-red compound which is formed when thiocyanate and inequivalent molybdenum react. This test is much more reliable than the potassium ethylxanthate test which has been recommended for a like purpose. A list of the apparatus and reagents which are required, and a description of the procedure follows.
Date: March 1932
Creator: Redmond, John C.
Partner: UNT Libraries Government Documents Department
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