This standard applies to the materials of the inner layer of sandwich structures made from polymer composites, and establishes a method for determining the density of these materials
GOST R 56654-2023 history
2023GOST R 56654-2023 Polymer composites. Method for determination of density of sandwich core materials
2015GOST R 56654-2015 Polymer composites. Method for determination of density of sandwich core materials