Author: Edwards, A Trystan
First published: N/A
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Edwards, A Trystan
The PRESIDENT said they had heard a most interesting discourse on a subject which he ventured to think not very many of those present were in a position to discuss with the technical and academic knowledge Mr. Gough had displayed. He did not, know that he
(the President) was in a position to offer any suggestions with regard to the discussion : he must confess that on reading the paper he had found himself somewhat out of his depth. But he believed there were one or two members present who knew something about the subject. He would ask Mr. Andrews, who had introduced Mr. Gough to the Institution, to move a vote of thanks.
While it should be stated, at the commencement, that no finality of agreed opinion has
been reached on the causes of fatigue failure and phenomena it is significant to find that the trend of modern thought is to associate the failure of metals-whether under static or repeated loading-with the consequences, direct or indirect, of slip, i.e., the process of plastic deformation by shear on gliding surfaces. Attention was first drawn to this aspect of fatigue by the classical researches of Ewing and Humfrey, whose work indicated a line of attack which has been followed up by other investigators, and has resulted in the discovery of important facts. It is to be expected that these facts are not entirely consistent with the conclusions drawn by the
earlier investigators from their own work in view of the more refincd experimental methods which have since been made available. The pioneer work of Ewing and Humfrey will never be forgotten, however.