Tensile Testing Machines. Tensile strength is the stress at which a material breaks or permanently deforms. There are three definitions of tensile strength, yield strength, ultimate strength and breaking strength. Tensile tests are usually carded out on wire, strip or machined samples with either circular or rectangular cross section. Test pieces are screwed into or gripped in jaws and stretched by moving the grips apart at a constant rate while measuring the load and the grip separation.
According to the Encyclopaedia Britannica, the Japanese currency is called the yen. The symbol of the yen is Â¥. The yen is among the major international currencies, due to Japan's economic renaissance in the second half of the 20th century.
âActually, nickels should be called 'coppers,'â says coin expert Q. David Bowers. Today's so-called nickels are 75 percent copper. Those aren't the only surprises hidden in the history of the nickel. The story of America's five-cent coin is, strangely enough, a war story. And 150 years since it was first minted in 1866, the modest nickel serves as a window into the symbolic and practical importance of coinage itself.