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. In composite laminates, the reference plane parallel to the plane of the laminate.