A graphical representation showing the relationship between the change in dimension of the specimen in the direction of the externally applied stress and the magnitude of the applied stress. The maximum tensile stress sustained by a plastic specimen before it fails in a tension test. The ability of a material to conduct heat. The total amount by which a quantity is allowed to vary. Toughness Tendency of a material to absorb work.
Porosity is an aggregation of micro-voids.
Voids are essentially incapable of transmitting structural stresses or nonradiative energy fields. Warp The yarns running lengthwise and parallel to the selvage in a woven fabric. The pattern by which a fabric is formed from interlacing yarns. Whisker A short single crystal fiber or filament. Whisker diameters range from 1 to 25 microns, with aspect ratios between 100 and 15,000.