Efekt smykových deformací při ohybových zkouškách kvazikřehkých materiálů

Current standards derive the material characteristics of quasi-brittle elements from the load-deflection diagrams obtained from the tests where the measured deflection includes both bending and shear effects. It is proven that only the deflection deflection is required to determine the characteristics of the material - significant deviation occurs in the calculation of the deflection calculation by including the effect of the shear deformations. An analysis of this phenomenon and an appreciation of its significance are presented.