A new failure criterion has been formulated for fiber composite materials.  It is the anisotropic counterpart of a recently derived isotropic criterion.  The targeted applications are for carbon fiber, polymeric matrix (or equivalent) types of materials.   The complete treatment can be accessed at the new website:                                                                 http://www.failurecriteria.com

     A new website http://www.failurecriteria.com has been initiated which surveys mechanics type failure criteria for homogeneous materials.  Although later additions will be concerned with anisotropic materials, the first topic of attention is that of yield and failure criteria for isotropic materials.  A brief review of  the Mises, Tresca, and Coulomb-Mohr criteria is given, along with the need for a more general form which spans the various  materials classes including metals, polymers and ceramics. Using results from the recent literature, a new two property failure form is