THERMOCOUPLE. A device for measuring temperatures, consisting of lengths of two dissimilar metals or alloys that are electrically joined at one end and connected to a voltage-measuring instrument at the other end. When one junction is hotter than the other, a thermal electromotive force is produced that is roughly proportional to the difference in temperature between the hot and cold junctions.
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THERMAL SHOCK. The development of a steep temperature gradient and accompanying high stresses within a structure.
STRAIN. A measure of the relative change in the size or shape of a body. Linear strain is the change per unit length […]
SHEAR. (1) That type of force that causes or tends to cause two contiguous parts of the same body to slide relative to […]
SUPERCOOLING. Cooling below the temperature at which an equilibrium phase transformation can take place, without actually obtaining the transformation.