ASTM C describes a method of determining the bond strength between the facing and core of a sandwich core panel or the strength of the core itself, if the. ASTM D – Air Permeability of Textile Fabrics . ASTM C testing determines the flatwise tensile strength of the core, core-to-facing bond, or the facing on. ASTM C is a testing specification that determines the flatwise tensile strength of the core, the core-to-facing bond, or the facing of an assembled sandwich.
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To request a quote for this test or others Click Here. The test ASTM C provides information on core-to-face bonding stability, load transfer and flatwise tensile zstm of sandwich core material. ASTM C is applicable for continuous bonded surfaces such as foams or discontinuous bonded surfaces such as honeycomb materials. The data is often used to specify a material, to design parts to withstand application force and as a quality control check of materials.
Flatwise Tensile Strength of Sandwich Constructions ASTM C297
Since the physical properties of many materials can vary depending on temperature, it is sometimes appropriate to test materials at temperatures that simulate the intended end use environment.
Test specimens c29 cut from sandwich panels, and the faces of the test specimens are bonded to aluminum blocks.
The adhesive must then be allowed the appropriate conditioning before testing.
One of the aluminum blocks is mounted in a d297 on the stationary side of a universal test machine, while the opposite aluminum block is mounted in a fixture on the moving side of the universal test machine. The assembly is then pulled apart at the suggested standard head displacement speed of 0.
Failure between an aluminum block and the sandwich structure is not an acceptable failure mode. Elevated or Reduced Temperature Test Procedure: A thermal chamber is installed on the universal test machine. The chamber is designed to allow the test mounts from the base and crosshead of the test machine to pass through the top and bottom ast, the chamber.
Tensile Strength of Sandwich Constructions ASTM C
Standard test fixtures are installed inside the chamber, and testing is conducted inside the controlled thermal environment the same as it would be at ambient temperature.
The chamber has internal electric heaters for elevated temperatures and uses external carbon dioxide gas as a coolant for reduced temperatures.
For discontinuous cellular bonded surfaces, specimen geometry is base on cell size. For continuous bonded surfaces, the minimum facing size is mm 2 1.
The following determinations can be made from the test results: Due to satm restrictions, we are not able to provide copies of standards. Standards can be obtained from appropriate standards authorities.