Paul N Crepeau

US Patent:

6732699, May 11, 2004

Filed:

Oct 4, 2002

Appl. No.:

10/264697

Inventors:

Shekhar G. Wakade - Grand Blanc MI
Paul Noles Crepeau - Clawson MI
Grant K. Tappen - Washington MI

Assignee:

General Motors Corporation - Detroit MI

International Classification:

F02F 700

US Classification:

1231932

Abstract:

A cast iron cylinder liner for an engine has a body with a radial upper flange and a generally cylindrical wall extending axially from an inner portion of the flange. An arcuate fillet is formed at a juncture between the upper flange and an exterior of the cylindrical wall. To strengthen the juncture of thin wall liners, for example with wall thickness less than 2. 5 mm, a portion adjacent the fillet is laser hardened to a selected depth of the wall, thus increasing resistance to stresses created in the wall when the liner is installed and operating in an engine.

US Patent:

8417365, Apr 9, 2013

Filed:

Apr 15, 2010

Appl. No.:

12/760894

Inventors:

Paul N. Crepeau - Clawson MI, US
Qigui Wang - Rochester Hills MI, US

International Classification:

G06F 19/00

US Classification:

700 98, 703 8, 703 2, 703 5, 703 7, 703 1, 345421, 345428, 345586, 345619, 345621, 345646, 345647, 345440, 345419, 726 26, 726 27, 726 21, 700118, 700197

Abstract:

A system includes an encoding module and a decoding module. The encoding module generates a three-dimensional (3D) model of a part, modifies the 3D model to include a 3D structure, and generates a computer-aided design (CAD) file based on the modified 3D model. The decoding module determines whether the CAD file includes the 3D structure, authorizes operation of analysis software on the CAD file when the CAD file includes the 3D structure, and prohibits operation of the analysis software when the CAD file does not include the 3D structure.

US Patent:

20120232858, Sep 13, 2012

Filed:

Mar 8, 2011

Appl. No.:

12/932858

Inventors:

Xinyu Zhou - Troy MI, US
Paul N. Crepeau - Clawson MI, US
Bing Li - Rochester Hills MI, US
Qigui Wang - Rochester Hills MI, US
Arunkumar R. - Gummidipundi TK Tiruvallur DT, IN

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS LLC - Detroit MI

International Classification:

G06F 17/10

US Classification:

703 2

Abstract:

A method to predict a distribution of material properties of a cast component. In one form, the method includes accepting at least one of dendrite arm spacing data and porosity data that have been previously determined, as well as accepting casting geometry data and structural analysis geometric data, calculating material properties of the casting based on one or both of dendrite arm spacing data and porosity data at each of the various nodes within the casting FEA or FD mesh and mapping the calculated material properties to the various nodes of the finished part FEA mesh. The method may be used as a basis for conducting fatigue or a related durability analysis on the component.

US Patent:

20230095748, Mar 30, 2023

Filed:

May 6, 2022

Appl. No.:

17/738802

Inventors:

- Detroit MI, US
Paul N. CREPEAU - Beverly Hills MI, US
Congjie WANG - Shanghai, CN

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS LLC - Detroit MI

International Classification:

C22C 21/02
C22F 1/043
B22D 21/00

Abstract:

The present disclosure provides a cast aluminum component prepared using an aluminum alloy composition. The aluminum alloy composition includes greater than or equal to about 3 wt. % to less than or equal to about 9 wt. % of silicon, greater than or equal to about 0.2 wt. % to less than or equal to about 0.6 wt. % of magnesium, greater than or equal to about 0.15 wt. % to less than or equal to about 0.8 wt. % of iron, greater than or equal to about 0.15 wt. % to less than or equal to about 0.6 wt. % of a combined concentration of chromium and manganese, greater than or equal to about 0.05 wt. % to less than or equal to about 0.2 wt. % of a combined concentration of vanadium and titanium, and a balance of aluminum. Greater than or equal to about 40 wt. % of the aluminum alloy composition is derived from post-consumer aluminum scrap.