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US 2013/0218540 A1Published application
Automated method to determine composite material constituent properties
AssigneeFirehole Technologies
InventorsRay Fertig, Emmett Nelson, Don Robbins
Life of this patent
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Abstract
A method of determining in situ composite material constituent properties is provided. In one example computer software is provided that automatically determines adjusted material properties or in situ properties of each constituent of a composite material. Methods shown ensure that a finite element model will consistently predict material behavior not just at one desired stress/strain state, but in all simulated states.
Claims20
A machine-readable medium with instructions stored thereon, the instructions when executed operable to:
- accept a set of user input composite material properties, including;
- a composite modulus in a first direction;
- a composite modulus in a second direction normal to the first direction;
- a composite shear modulus in a plane that includes the first direction and the second direction;
- a composite Poisson ratio in a plane that includes the first direction and the second direction;
- accept a user input composite microstructure;
- and
- automatically compute adjusted material properties of all constituents of the composite material, wherein a set of consistent fixed constituent property constraints are utilised to obtain the adjusted material property.
5 more elements
A method comprising:
- entering a set of carbon fiber/polymer matrix composite material properties into a computer memory, including:
- a composite modulus in a first direction;
- a composite modulus in a second direction normal to the first direction;
- a composite shear modulus in a plane that includes the first direction and the second direction;
- a composite Poisson ratio in a plane that includes the first direction and the second direction;
- entering a carbon fiber/polymer matrix composite microstructure into the computer;
- processing the set of carbon fiber/polymer matrix composite material properties and the carbon fiber/polymer matrix composite microstructure to determine adjusted material properties of all constituents of the composite material, wherein a set of fixed constituent property constraints are utilised to obtain the adjusted material properties.
4 more elements
Dependencies are inferred from the claim text.