Christine Marie Kennefick

US Patent:

6983226, Jan 3, 2006

Filed:

Aug 2, 2001

Appl. No.:

09/919922

Inventors:

Christine M. Kennefick - Reston VA, US

International Classification:

G06F 17/50
G06F 17/10
G06G 7/48

US Classification:

703 1, 703 6

Abstract:

A composite material having a microstructure model is provided with a continuous matrix of microstructure entities such as particles and grains that rotate under both remotely applied stresses and induced concentrated stresses from nearby cracks, pores and smaller particles, all networked within the matrix. The rotation microstructure entities are smooth closed contours that are elliptically-shaped. A net moment results on the boundaries of the microstructure entities effecting fracture toughening of the material. Small particles and other microstructural entities may reduce the attenuation of, transmit, and counteract the stresses induced by the rotating microstructure entities. The induced stresses counteract those stresses and strain energy densities that promote crack propagation. The result is a microstructure free of laminates, coatings, fibers and fiber architectures that effect toughening of the material against fracture.

US Patent:

20130273316, Oct 17, 2013

Filed:

Apr 13, 2012

Appl. No.:

13/445946

Inventors:

Christine Marie Kennefick - Reston VA, US

International Classification:

B32B 5/00

US Classification:

428141

Abstract:

The invention is a monolithic material texture of three dimensional microstructural elements that rotate within the texture or material matrix under an applied load to produce elastic stress patterns unique to the shape, orientation and size of the microstructural elements. The applied load can arise from a mechanical load, electromagnetic wave or charge carrier. The elastic stress patterns, by themselves or superimposed upon the incoming stress, can oscillate in time with the incoming force or with the wavelike properties of charge carriers. The elastic stress patterns are used to identify the frequency, phase, amplitude and direction of an incoming wave. The elastic stress patterns may also facilitate electrical conduction and power, prevent fracture or promote material separation by the redistribution, buildup and release of elastic strain or potential energy at the atomic scale, nanoscale, micron scale or higher.

US Patent:

20130275903, Oct 17, 2013

Filed:

Apr 13, 2012

Appl. No.:

13/445948

Inventors:

Christine Marie Kennefick - Reston VA, US

International Classification:

G06T 17/00
G06F 3/048

US Classification:

715771, 345420

Abstract:

With the invention, a user is able to input the size, shape, orientation, spacing and bundling of three dimensional structural elements to create a custom-designed material texture. The method computes and stores direction cosines for vectors normal to faces, coordinates of vertices, and coordinates of the center of mass of each face for each structural element. The method orders by distance other structural elements that could interact with a particular structural element within a specified radius. A probe point may advance through the texture in a straight line a number of times specified by the user. The user may also specify the density of sampling points and radius of a sphere within which analysis is performed. Each time the sampling point advances, the method detects which vertex and which face on a structural element the point of analysis is nearest.

US Patent:

58262130, Oct 20, 1998

Filed:

Feb 25, 1997

Appl. No.:

8/805466

Inventors:

Christine Kennefick - Reston VA

International Classification:

G01N 308

US Classification:

702 35

Abstract:

The system consists of a series of programs that enable a user to investigate possible toughening mechanisms against crack growth in composites and brittle materials consisting of different combinations of materials and containing planar interfaces and elliptically shaped microstructures. The programs begin with various materials, sizes and orientations of microstructures, distances of a crack from a material interface, and possible formulas for energy absorption mechanisms of interest to the user. They then allow a crack to advance toward an interface numerically integrate over a circular and microstructural regions and thus calculate the balance of various energy quantities during crack advance. They then transform the final calculations into a graph display of net energy per incremental length of crack advance versus crack distance from the microstructural entity in question. An advantage of the system is that it allows a user to investigate possible toughening mechanisms against fracture without testing a new specimen each time in a laboratory.

US Patent:

20210125681, Apr 29, 2021

Filed:

Oct 6, 2020

Appl. No.:

17/064066

Inventors:

Dr. Christine Marie Kennefick - Reston VA, US
Christine Marie Kennefick - Reston VA, US

International Classification:

G16B 5/00
G16B 15/00
G06F 30/17
G06F 30/23

Abstract:

The method comprises a series a programs that enable a user to model any one or more of numerical data, atoms, electrons, nucleons and atomic clusters as strands, knots and waves that interact with rotational strain. The programs allow placement of strands with varying length scales and shapes at centers, vertices and faces of three-dimensional elements that can have any number of symmetries, internal angles, dimensions and orientations. Parameters in the functions that trace out the strands can be altered by rotational strain components, which arise from rotation of the three-dimensional elements within a shearable medium. For each strand, a program can track its path, extent and number of loops. An advantage of the method is that is allows mapping or model that responds to intricate changes in internal angles and orientation of three dimensional elements, and to intricate changes in functions that trace out the strands.

US Patent:

20200342659, Oct 29, 2020

Filed:

Jan 23, 2020

Appl. No.:

16/750249

Inventors:

Christine Marie Kennefick - Reston VA, US

International Classification:

G06T 17/00
G16B 45/00

Abstract:

A structure with a model comprising a three-dimensional element is provided that in one embodiment maps data, and in a second embodiment dissolves, shatters, breaks or ruptures a disease cell membrane. Vertices, faces and the center of a three-dimensional element provide locations for knots and strands in a model and also provide linkage points for line segments that connect knots and strands. The line segments can fold a structure at linkage points to create a new three-dimensional element or to change a bond angle. Knots and strands can interact with strain components that arise from rotation of the three-dimensional element in a shearable medium. Correlation and separation of paths of strands under rotational strain can further map data, or in a model can promote dissolution of a disease cell membrane.

US Patent:

20160342714, Nov 24, 2016

Filed:

Oct 7, 2015

Appl. No.:

14/877041

Inventors:

Christine Marie Kennefick - Reston VA, US

International Classification:

G06F 17/50
G06F 17/16
G06F 17/11

Abstract:

A monolithic structure designed to be built with relatively few manufacturing steps comprises three dimensional elements enclosed by planar faces, a rotation within a shearable medium, a strain arising from the rotation, and potential energy configurations that are dependent upon the strain. A first tensor for strain or displacement within a shearable medium is derived from the rotation. A configuration of a potential energy, its gradient or a potential energy per unit volume in the structure is derived from a second tensor whose coefficients can be derived from a sum of constants and trigonometric functions. A new energy configuration is defined when parameters and coefficients of the second tensor become dependent upon the rotation and its subsequent strain. Drawings illustrate several views and examples of the interaction between the rotation, tensors and three dimensional elements.

US Patent:

20140329051, Nov 6, 2014

Filed:

Jul 1, 2014

Appl. No.:

14/320682

Inventors:

Christine Marie Kennefick - Reston VA, US

International Classification:

H01F 7/02

US Classification:

428141

Abstract:

The invention is a material model that treats all charge carriers, micro structural elements and disturbances as sets of energy flux vectors. The curvature and direction of the path of the energy flux vectors are vector functions whose coefficients are summations of linear and trigonometric functions. The amplitude, frequency and phase angle of the trigonometric functions can be altered and optimized by elastic stress patterns in the material, by rotation of micro structural elements, or by other energy flux vectors themselves. The curvature, direction and optimization of the path of the energy flux vectors gives rise to electric potential, electric current, fracture resistance, or the absorption or emission of a set of energy flux vectors.