Abstract
IN the Menelaus Memorial Lecture delivered to the South Wales Institute of Engineers on March 19, Dr. A. P. M. Fleming chose as his subject “Electricity as applied to Metallurgy”. A most important application arises in connexion with methods of testing. Dr. Fleming points out that electricity has proved an invaluable aid to the metallurgist when making fine measurements and researches, as well as for checking the quality of his materials. Using standardized specimens the composition and heat treatment of which are known, comparisons may be made of unknown specimens by magnetic testing. By suitable exploration of the magnetic behaviour of the specimen in an alternating magnetic field, it is possible to relate the phase and quadrature components of the voltage induced in a search coil, and by comparing these with the standardized specimen, definite inferences can be drawn as to the composition of the material without the necessity of destroying the specimen under test.
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Electricity Applied to Metallurgy. Nature 145, 929 (1940). https://doi.org/10.1038/145929c0
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DOI: https://doi.org/10.1038/145929c0