Density - Core ASTM C271

When designing and manufacturing sandwich structures, the properties of the core material play a significant role in determining the structural properties of the final product. One important property of sandwich core materials is density, which is determined by ASTM C271.

ASTM C271 is a standard test method used to determine the density of sandwich core materials. The test involves machining five specimens from a customer-supplied product, with each specimen measuring 12 inches by 12 inches by the thickness of the material. The specimens are then conditioned according to the customer's requirements, and after conditioning, they are measured and weighed to the nearest 0.001 inches.

The density of the sandwich core material is calculated using the following formula: dSI = 1,000,000 * wt / (l * w * t), where dSI is the density in SI units, wt is the weight of the specimen, l is the length of the specimen, w is the width of the specimen, and t is the thickness of the specimen.

The density of the sandwich core material is an important parameter because it affects the mechanical properties of the sandwich structure. For example, the stiffness and strength of the sandwich structure are proportional to the density of the core material. Therefore, knowing the density of the core material is essential for designing sandwich structures with the desired mechanical properties.

In summary, ASTM C271 is a standard method for determining the density of sandwich core materials. This test is essential for manufacturers and designers who need to know the properties of sandwich structures to ensure that they meet the necessary mechanical requirements.