. Steel rails; their history, properties, strength and manufacture, with notes on the principles of rolling stock and track design . View 1. View 2. Fig. 26S. — Crushed Head. Cross Section at point Cz, Mag. 100,68,000 grains per sq. in. Fig. 269 illustrates another example of a crushed head due to unsoundmetal. View 1 shows a section of the head taken at the point of greatest dis-tortion. The cavity in the top of this view is a drilled hole. On one side ofthe head a cavity which did not show on the surface, but indicated markedbreaking down of the metal, was revealed. The metal, however, is mo
. Steel rails; their history, properties, strength and manufacture, with notes on the principles of rolling stock and track design . View 1. View 2. Fig. 26S. — Crushed Head. Cross Section at point Cz, Mag. 100,68,000 grains per sq. in. Fig. 269 illustrates another example of a crushed head due to unsoundmetal. View 1 shows a section of the head taken at the point of greatest dis-tortion. The cavity in the top of this view is a drilled hole. On one side ofthe head a cavity which did not show on the surface, but indicated markedbreaking down of the metal, was revealed. The metal, however, is more uni-form throughout this rail than was the case in the rail of the preceding figure. View 2 shows the grain at the center of the head; view 3, like \aew 3 ofFig. 268, is taken at the end of the crack. It shows the finer grain and distor-tion of the same, and shows as well the further distortion of the metal at the INFLUENCE OF DETAIL OF MANUFACTURE 393 end of the crack as a sort of tearing action. The end of the crack is at thecorner of the picture; the further direction of progress of the failure is shownby the black def
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Keywords: ., bookcentury1900, bookdecade1910, bookidsteelrailsth, bookyear1913
