Honeycomb shear testing method
AssigneeThe Aerospace Corporation
InventorsDick J. Chang, Pierre R. Valenzuela, Richard P. Welle
Life of this patent
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Abstract
A shear test fixture and method determines the shear strength of a honeycomb having elongated cells extending between two ends filled with a filler material with a load applied to one end relative to the other end introducing shear stress without introducing compression or tension stress for improved shear strength testing.
Claims18
A method of inducing stresses in a structure of cells positioned at a first end and at a second end of the structure, the method comprising the steps of,
- disposing a filler material into the cells at the first end and into the cells at the second end of the structure,
- rigidly clamping the first end of the structure,
- rigidly clamping the second end of the structure for transferring a load force upon the structure, and
- applying load induced displacement to the second end relative to the first end, the load inducing stresses in the structure.
A method of testing for shear properties of a structure of cells positioned at a first end and at a second end of the structure, the method comprising the steps of,
- disposing a filler material into the cells at the first end and into the cells at the second end of the structure,
- rigidly clamping the first end of the structure,
- rigidly clamping the second end of the structure for transferring a load force upon the structure,
- applying load induced displacement to the second end relative to the first end, the load inducing stresses in the structure, and
- determining the shear properties of the structure upon deformation the structure when under the load.
A method of testing for shear properties of a honeycomb structure of elongated hexagonal cells extending between a first end and a second end of the honeycomb structure, the method comprising the steps of,
- disposing a filler material into the elongated hex cells at the first end,
- creating a partial vacuum within the elongated hexagonal cells,
- vacuum filling the elongated hexagonal cells at the second end with the filler material,
- rigidly clamping the first end of the honeycomb structure,
- rigidly clamping the second end of the honeycomb structure for transferring a load force upon the honeycomb structure,
- applying load induced displacement to the second end relative to the first end, the load inducing stresses in the entire honeycomb, and
- determining the shear properties of the honeycomb structure upon deformation of the honeycomb structure when the load is applied.
Dependencies are inferred from the claim text.