METHOD OF DETERMINATION OF BENDING RIGIDITY OF OBJECTS MADE OF COMPOSITION MATERIALS Russian patent published in 1998 - IPC

FIELD: testing technology. SUBSTANCE: series of identical objects to be examined is cut preliminarily into specimens in every rated section. Specimens are loaded with tensile force, modulus of their elasticity is determined, and dependence of distribution of modulus mean-statistic values for object length are found. They are used for calculation of rigidity of object being examined. This done, objects are subjected to identification by bending rigidity. For this purpose every object under test is secured as cantilever, loaded with static force in elastic deformation area, maximum deformations are measured in every rated section, and maximum deformations in the same sections are calculated. If difference of measured and calculated deformations exceeds preliminarily estimated maximum permissible error Δε of deformation measuring method selected, actual bending rigidity is determined in every section of construction being examined by multiplying rated rigidity by relation of calculated deformation to measured one. EFFECT: enhanced measurement accuracy. 4 dwg