GOST R 56680-2015 Polymer composites. Determination facing’s mechanical flexural properties of sandwich construction by long beam flexure method
GOST R 56791-2015 Polymer composites. Determination of mechanical characteristics of shear of the inner layer of sandwich constructions by beam flexure
GOST R 56798-2015 history
2015GOST R 56798-2015 Polymer composites. Method for determination the mechanical characteristics of sandwich constructions flexural