Automated method to determine composite material constituent properties
AssigneeFirehole Technologies
InventorsRay Fertig, Emmett Nelson, Don Robbins
Life of this patent
Estimating the term…
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.
Claims8
A machine-readable medium with instructions stored thereon, the instructions when executed operable to:
- accept a set of user input composite material properties;
- 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 utilized to obtain the adjusted material property.
A method comprising:
- entering a set of composite material properties into a computer memory;
- entering a composite microstructure condition into the computer memory;
- and
- processing the set of composite material properties and the composite microstructure condition to determine adjusted material properties of all constituents of the composite material, wherein a set of consistent fixed constituent property constraints are utilized to obtain the adjusted material properties.
A machine-readable medium with instructions stored thereon, the instructions when executed operable to:
- accept a set of user input carbon fiber/polymer matrix composite material properties, consisting of:
- 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 carbon fiber/polymer matrix microstructure;
- determine an adjusted material properties of one or more the carbon fiber constituents, wherein a set of consistent fixed constituent property constraints are utilized to obtain the adjusted material properties;
- and
- determine adjusted properties of one or more polymer matrix constituents, wherein the set of consistent fixed constituent property constraints are utilized to obtain the adjusted polymer matrix properties.
Dependencies are inferred from the claim text.