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Updated: May 9, 2025
The first can seemingly be increased without limit; the atmospheric resistance is about to be reduced by running the cars hermetically sealed through a partial vacuum in a steel and toughened glass tube; while the third has been removed indefinitely by the use of galvanized aluminum, which bears about the same relation to ordinary aluminum that steel does to iron, and which has twice the tensile strength and but one third the weight of steel.
Young cheeks had no business to be so gaunt. Polder picked up the figurine in red clay, studied it with a troubled brow, and replaced it with a gesture of hopelessness. "Possibly," Howat Penny unexpectedly remarked, "possibly you find beauty in a piece of open hearth steel." "It's useful," Polder declared; "it has a tensile strength. I know what it will do.
When one considers that, with the supportive appliance placed on each side of the affected member, rigidity is accomplished as much from tensile strain put upon the leather as from its own stiffness, it is seen that the leather need not be of the heaviest sole leather is unnecessary.
These were adopted because there existed some doubt as to the strength of gun metal under a high temperature; and as the data respecting its strength appeared of a doubtful character, a series of careful tests were made to determine the tensile strength of gun metal when at atmospheric and higher temperatures.
Above 25 per cent. the strength again increases. The effect of silicon in small proportions upon copper is to greatly increase its tensile strength. When more than 5 per cent. is present, the product is exceedingly brittle and grayish-black in color.
The strains subsisting in engines are usually characterized as tensile, crushing, twisting, breaking, and shearing strains; but they may be all resolved into strains of extension and strains of compression; and by the power of the materials to resist these two strains, will their practical strength be measurable.
It was of a tensile strength better even than that of Krupp of Essen who was then specializing in the making of large blocks of cast steel for heavy forgings, and particularly for guns. Indeed, he was able publicly to challenge Krupp to produce a cast gun metal or cast steel to stand test against his.
The back must stand a tremendous tensile strain and the grain of the wood should not be injured in any way. But you may smooth it off very judiciously with a spoke shave, and later with a file. The transverse contour of this part of the bow remains as it was in the tree, a long flat arc.
A bar of cast iron, when at its breaking point by the application of a tensile strain, is stretched about one six-hundredth part of its length; and an equal strain employed to compress it, would shorten it about one eight-hundredth part of its length. Q. But to what strain may the iron used in the construction of engines be safely subjected?
It is virtually certain, however, that we will be able to dissipate it in successive decrements by the use of long, thin leads extending downward toward a high point of the planet." "Wire, you mean? What kind?" "The material is not important except in that it should have sufficient tensile strength to support as many miles as possible of its own length."
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