%0 Journal Article %T Estimation of Fracture Toughness by Testing Notched Fracture Specimens and Applying the Theory of Critical Distances %A S. Cicero %A V. Madrazo %A I. A. Carrascal %J ISRN Materials Science %D 2012 %I Hindawi Publishing Corporation %R 10.5402/2012/689386 %U http://dx.doi.org/10.5402/2012/689386