. . . "http://www.iso.org/iso/catalogue_detail?csnumber=31889"^^ . . "\\(\\tau\\)"^^ . . . . . "Shear Stress" . "http://en.wikipedia.org/wiki/Stress_(mechanics)"^^ . . . "Shear stress occurs when the force occurs in shear, or perpendicular to the normal." . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "\\(\\tau = \\frac{dF_t}{dA}\\), where \\(dF_t\\) is the tangential component of force and \\(dA\\) is the area of the surface element."^^ . . . . . . . . . . . . . . . .