in its abruptness
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Plate 9, Fig. 12. Fatigue of Swedish iron by reversals of a stress of 12.4 tons per sq. inch. Magnification 1000 diameters.
after 40,000 reversals.
(cropped from border, squared)
illustrating J. A. Ewing (1855-1935 * ) and J. C. W. Humfrey. “The Fracture of Metals under Repeated Alterations of Stress.” Philosophical Transactions : Mathematical and physical sciences. Series A. 200 (1903) : 241-250, followed by four plates
Cornell copy, digitized August 20, 2013
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another region.
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The effect of this repeated sliding or grinding is seen at the polished surface of the specimen by the production of a burr, or rough and jagged irregular edge, broadening the slip-band, and suggesting the accumulation of debris.
ex (together with epigram) p 246
tags: gpoy; creeping flaw; hands; lines; metallurgy; ruination
J. A. Ewing; J. C. W. Humfrey