Patents by Inventor Walter Dale Compton
Walter Dale Compton has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 11135616Abstract: Methods of machining a body to produce a chip wherein the body is formed of a material and in a state such that the material exhibits sinuous flow during a machining operation. The methods include providing a layer located on a surface of the body, and machining the body by causing engagement between a cutting tool and the body in a contact region below an area of the surface having the coating layer thereon and moving the cutting tool relative to the body to produce the chip having the layer thereon. The layer reduces sinuous flow in the material of the body.Type: GrantFiled: September 16, 2019Date of Patent: October 5, 2021Assignee: Purdue Research FoundationInventors: Ho Yeung, Koushik Viswanathan, Walter Dale Compton, Srinivasan Chandrasekar
-
Patent number: 10843274Abstract: A method for controlling flow localization in machining process is disclosed. By application of a constraint of sufficient level in the deformation zone and modifying the surface boundary conditions, suppression of unsteady flow and flow instabilities is achieved. The method enhances machined component quality by ensuring a uniform deformation state on the machined surface. Machined components are produced by ensuing uniform deformation by adopting constrained-cutting process for suppressing the instabilities and unsteady flow through a pre-determined location of the constraint of the constrained machining process relative to the machining tool.Type: GrantFiled: July 17, 2015Date of Patent: November 24, 2020Assignee: Purdue Research FoundationInventors: Dinakar Sagapuram, Kevin Paul Trumble, Walter Dale Compton, Srinivasan Chandrasekar
-
Publication number: 20200023405Abstract: Methods of machining a body to produce a chip wherein the body is formed of a material and in a state such that the material exhibits sinuous flow during a machining operation. The methods include providing a layer located on a surface of the body, and machining the body by causing engagement between a cutting tool and the body in a contact region below an area of the surface having the coating layer thereon and moving the cutting tool relative to the body to produce the chip having the layer thereon. The layer reduces sinuous flow in the material of the body.Type: ApplicationFiled: September 16, 2019Publication date: January 23, 2020Inventors: Ho Yeung, Koushik Viswanathan, Walter Dale Compton, Srinivasan Chandrasekar
-
Patent number: 10413934Abstract: Methods of machining a body to produce a chip are provided wherein the body is formed of a material and in a state such that the material exhibits sinuous flow during a machining operation. The methods include providing a layer located on a surface of the body, and machining the body by causing engagement between a cutting tool and the body in a contact region below an area of the surface having the coating layer thereon and moving the cutting tool relative to the body to produce the chip having the layer thereon. The layer reduces sinuous flow in the material of the body and the chip is formed primarily by laminar flow.Type: GrantFiled: July 18, 2016Date of Patent: September 17, 2019Assignee: Purdue Research FoundationInventors: Ho Yeung, Koushik Viswanathan, Walter Dale Compton, Srinivasan Chandrasekar
-
Patent number: 9687895Abstract: Processes by which bulk forms can be produced in a single continuous operation, as opposed to multi-stage deformation processes that involve a series of separate and discrete deformation operations or stages. Such processes generally entail deforming a solid body using a large-strain extrusion machining technique and deformation conditions that obtain a predetermined crystallographic texture in the continuous bulk form that differs from the crystallographic texture of the solid body.Type: GrantFiled: January 6, 2012Date of Patent: June 27, 2017Assignee: Purdue Research FoundationInventors: Srinivasan Chandrasekar, Kevin Trumble, Wilfredo Moscoso, Mert Efe, Dinakar Sagapuram, Christopher J. Saldana, James Bradley Mann, Walter Dale Compton
-
Publication number: 20170014862Abstract: Methods of machining a body to produce a chip are provided wherein the body is formed of a material and in a state such that the material exhibits sinuous flow during a machining operation. The methods include providing a layer located on a surface of the body, and machining the body by causing engagement between a cutting tool and the body in a contact region below an area of the surface having the coating layer thereon and moving the cutting tool relative to the body to produce the chip having the layer thereon. The layer reduces sinuous flow in the material of the body and the chip is formed primarily by laminar flow.Type: ApplicationFiled: July 18, 2016Publication date: January 19, 2017Inventors: Ho Yeung, Koushik Viswanathan, Walter Dale Compton, Srinivasan Chandrasekar
-
Patent number: 9527134Abstract: Methods suitable for producing textured surfaces in surfaces of objects, by which the methods are able to achieve a desired three-dimensional surface topography and optionally a desired subsurface microstructure through the use of a controlled modulation machining technique. The methods include selecting a predetermined surface texture for a surface of a body, and then imposing a superimposed sinusoidal feed-modulation on a cutting tool so as to move the cutting tool in a feed direction relative to the body while machining the body with the cutting tool and generating a machined surface of the body. The surface texture of the machined surface is intentionally controlled by at least the modulation amplitude and the modulation frequency of the superimposed sinusoidal feed-modulation.Type: GrantFiled: March 30, 2012Date of Patent: December 27, 2016Assignee: Purdue Research FoundationInventors: James Bradley Mann, Srinivasan Chandrasekar, Christopher Javellana Saldana, Yang Guo, Walter Dale Compton
-
Publication number: 20160018811Abstract: A method for controlling flow localization in machining process is disclosed. By application of a constraint of sufficient level in the deformation zone and modifying the surface boundary conditions, suppression of unsteady flow and flow instabilities is achieved. The method enhances machined component quality by ensuring a uniform deformation state on the machined surface. Machined components are produced by ensuing uniform deformation by adopting constrained-cutting process for suppressing the instabilities and unsteady flow through a pre-determined location of the constraint of the constrained machining process relative to the machining tool.Type: ApplicationFiled: July 17, 2015Publication date: January 21, 2016Applicant: Purdue Research FoundationInventors: Dinakar Sagapuram, Kevin Paul Trumble, Walter Dale Compton, Srinivasan Chandrasekar
-
Publication number: 20140047959Abstract: Methods suitable for producing textured surfaces in surfaces of objects, by which the methods are able to achieve a desired three-dimensional surface topography and optionally a desired subsurface microstructure through the use of a controlled modulation machining technique. The methods include selecting a predetermined surface texture for a surface of a body, and then imposing a superimposed sinusoidal feed-modulation on a cutting tool so as to move the cutting tool in a feed direction relative to the body while machining the body with the cutting tool and generating a machined surface of the body. The surface texture of the machined surface is intentionally controlled by at least the modulation amplitude and the modulation frequency of the superimposed sinusoidal feed-modulation.Type: ApplicationFiled: March 30, 2012Publication date: February 20, 2014Inventors: James Bradley Mann, Srinivasan Chandrasekar, Christopher Javellana Saldana, Yang Guo, Walter Dale Compton
-
Publication number: 20140017113Abstract: Processes by which bulk forms can be produced in a single continuous operation, as opposed to multi-stage deformation processes that involve a series of separate and discrete deformation operations or stages. Such processes generally entail deforming a solid body using a large-strain extrusion machining technique and deformation conditions that obtain a predetermined crystallographic texture in the continuous bulk form that differs from the crystallographic texture of the solid body.Type: ApplicationFiled: January 6, 2012Publication date: January 16, 2014Applicant: PURDUE RESEARCH FOUNDATIONInventors: Srinivasan Chandrasekar, Kevin Trumble, Wilfredo Moscoso, Mert Efe, Dinakar Sagapuram, Christopher J. Saldana, James Bradley Mann, Walter Dale Compton
-
Patent number: 7895872Abstract: A products having at least a portion thereof with a nanocrystalline microstructure, and methods of producing such products. The method generally entails machining a body to produce a polycrystalline chip having a nanocrystalline microstructure. The chips produced by the machining operation may be in the form of particulates, ribbons, wires, filaments and/or platelets. The chips may be consolidated (with or without comminution) to form a product, such that the product is essentially a nanocrystalline monolithic material consisting essentially or entirely of nano-crystals, or of grains grown from nano-crystals. Alternatively, the chips may be dispersed in a matrix material, such that the product is a composite material in which the chips are dispersed as a reinforcement material. According to a particular aspect, a monolithic article can be formed entirely from a single chip by deforming the chip and/or removing material from the chip.Type: GrantFiled: May 3, 2006Date of Patent: March 1, 2011Assignee: Purdue Research FoundationInventors: James B. Mann, Srinivasan Chandrasekar, Walter Dale Compton
-
Patent number: 7617750Abstract: A process by which nanostructured monolithic bodies can be produced in a single continuous operation, as opposed to multi-stage deformation processing. The process generally entails continuously producing a chip having a nanostructured microstructure by engaging a solid body with a cutting edge of a tool while the solid body and the cutting edge move relative to each other, and simultaneously extruding the chip in the immediate vicinity of the cutting edge, such as with a constraining member, as the chip is separated from the solid body by the cutting edge to continuously plastically deform the chip and produce a nanostructured monolithic body immediately downstream of the cutting edge. The shape and size of the chip can be simultaneously controlled by the extrusion process so that the nanostructured monolithic body has a predetermined geometry. The nanostructured monolithic body can be in the form of a product suitable for immediate use, or undergo further processing to yield a product.Type: GrantFiled: December 6, 2006Date of Patent: November 17, 2009Assignee: Purdue Research FoundationInventors: Wilfredo Moscoso, James B. Mann, M. Ravi Shankar, Srinivasan Chandrasekar, Walter Dale Compton
-
Patent number: 7587965Abstract: A tool holder assembly and method for intentionally inducing modulation in a machining process. The tool holder assembly is configured for mounting in a tool block on a machining apparatus and includes a tool holder body configured to be secured to the tool block of the machining apparatus, a tool holder mounted on the tool holder body and configured for securing a cutting tool thereto, and a device for imposing a superimposed modulation on the tool holder so as to move the cutting tool relative to the tool holder body and thereby relative to the tool. The tool holder assembly is useful in a process for producing chips having a desired shape and size, and particularly to a method of controllably producing nanocrystalline chips.Type: GrantFiled: May 3, 2006Date of Patent: September 15, 2009Assignee: Purdue Research FoundationInventors: James B. Mann, Srinivasan Chandrasekar, Walter Dale Compton
-
Publication number: 20080138163Abstract: A process by which nanostructured monolithic bodies can be produced in a single continuous operation, as opposed to multi-stage deformation processing. The process generally entails continuously producing a chip having a nanostructured microstructure by engaging a solid body with a cutting edge of a tool while the solid body and the cutting edge move relative to each other, and simultaneously extruding the chip in the immediate vicinity of the cutting edge, such as with a constraining member, as the chip is separated from the solid body by the cutting edge to continuously plastically deform the chip and produce a nanostructured monolithic body immediately downstream of the cutting edge. The shape and size of the chip can be simultaneously controlled by the extrusion process so that the nanostructured monolithic body has a predetermined geometry. The nanostructured monolithic body can be in the form of a product suitable for immediate use, or undergo further processing to yield a product.Type: ApplicationFiled: December 6, 2006Publication date: June 12, 2008Applicant: PURDUE RESEARCH FOUNDATIONInventors: Wilfredo Moscoso, James B. Mann, M. Ravi Shankar, Srinivasan Chandrasekar, Walter Dale Compton