Shear Strength and Modulus Sandwich Cores, identification of compression or tension characteristics of composites by ASTM C273
This test method is used to determine core shear properties of a sandwich construction material using loading plates bonded to the outer surfaces or skins (face sheets). The test is applicable for either continuous (foams) or discontinues bonding surfaces (honeycomb).
Test procedure: The bonded loading plates are either pulled in tension or pushed in compression on a Universal Test Machine in order to shear the material within 3 to 6 minutes. Intertek currently only has the capabilities to perform the compression method.
Specimen size: Intertek currently has the capabilities to test specimens 2” wide and up to 1” thick.
Available data from ASTM C273:
- Ultimate core shear strength
- 2% offset shear stress
- Engineering shear strain
- Core shear modulus
- Failure type
**Please note that this test description is intentionally generic in nature and aimed at providing a descriptive summary to enhance test understanding. Standards can be obtained from appropriate standard authorities.