System and method for malware detection in additive manufactured parts
A system for detecting corruption in a three-dimensional model for use in additive manufacturing comprises a non-transitory computer-readable medium with instructions stored thereon, that when executed by a processor, perform the steps of obtaining a set of tool-control language instructions that define an additive manufactured part, obtaining a first mechanical specification for the additive manufactured part, constructing a virtual three dimensional model from the set of tool-control language instructions, performing at least one analysis step on the virtual three dimensional model to determine whether the virtual three dimensional model meets the first mechanical, electrical, thermal, and/or magnetic specification, and indicating that the set of tool-control language instructions is corrupt when the virtual three dimensional model fails to meet the first mechanical, electrical, thermal, and/or magnetic specification. A method of producing an additive manufactured part is also described.
1. A method of producing an additive manufactured part, comprising the steps of:
obtaining a set of tool-control language instructions that define the additive manufactured part;
obtaining a first mechanical specification for the additive manufactured part;
constructing a virtual three dimensional model from the set of tool-control language instructions by performing steps comprising:
generating a set of basic solid shapes;
compiling geometric transformations on a set of basic solid shapes into transformed solid shapes;
compiling a union of a first subset of transformed solid shapes into a first compound solid shape;
compiling the first compound solid shape into at least one solid geometry;
converting the at least one solid geometry into a three dimensional mesh;
creating a virtual three dimensional model from the three dimensional mesh;
compiling an intersection of a second subset of transformed solid shapes into a second compound solid shape;
compiling a difference of a third subset of transformed solid shapes into a third compound solid shape;
compiling a union, intersection, and/or difference of a subset of compound solid shapes into a fourth compound solid shape;
compiling a union of a subset of compound solid shapes into the at least one solid geometry;
converting the at least one solid geometry into the three dimensional mesh; and
creating the virtual three dimensional model from the three dimensional mesh;
performing at least one analysis step on the virtual three dimensional model to determine whether the virtual three dimensional model meets the first mechanical specification; and
printing an additive manufactured part from the set of tool-control language instructions when the virtual three dimensional model meets the first mechanical specification.
2. The system of claim 1 , wherein the set of tool-control language instructions comprises statements or instructions selected from the group consisting of g-code, m-code, and step-nc.
3. The method of claim 1 , wherein the at least one analysis step is compatible with a numerical method for solving partial differential equations, wherein the numerical method is selected from the group consisting of a finite element analysis, a computational fluid dynamics analysis, and an extended discrete element method analysis.
4. The method of claim 1 , wherein the additive manufactured part is printed from a material selected from the group consisting of a polymer, a metal, a ceramic, and a composite material.
5. The method of claim 1 , further comprising the steps of:
compiling a set of geometric transformations on a set of basic solid shapes into a set of transformed solid shapes;
compiling a union of a first subset of transformed solid shapes into a first compound solid shape;
compiling an intersection of a second subset of transformed solid shapes into a second compound solid shape;
compiling a difference of a third subset of transformed solid shapes into a third compound solid shape; and
compiling a union of a subset of transformed solid shapes into at least one solid geometry.
6. The method of claim 1 , wherein the basic solid shapes are selected from the group consisting of prisms, cylinders, cuboids, pyramids, spheres, and cones.
7. The method of claim 1 , further comprising the steps of:
assigning a first material value to a basic solid shape when a sintering laser is enabled; and
assigning a second material value to the basic solid shape when the sintering laser is disabled.
8. The method of claim 1 , further comprising the steps of:
assigning a first material value to a basic solid shape when a fused material extruder is enabled; and
assigning a second material value to the basic solid shape when the fused material extruder is disabled.
9. The method of claim 1 , further comprising the steps of:
assigning a first material value to a basic solid shape if a nozzle temperature setting exceeds a threshold; and
assigning a second material value to a basic solid shape when the nozzle temperature setting is below the threshold.
10. The method of claim 1 , further comprising the steps of:
assigning at least one material stiffness parameter based on an intended composition of the additive manufactured part; and
assigning at least one displacement value based on an intended functionality of the additive manufactured part.
11. The method of claim 1 , further comprising the steps of:
obtaining at least one path limit value along at least one axis in a simulated printing environment;
positioning the virtual three dimensional model within the simulated printing environment; and
indicating a failure when a part of the virtual three dimensional model is positioned beyond the at least one path limit value.