Analysis of steady-state and transient stress, strain, and temperature fields using finite element and finite difference methods; fatigue and fracture analysis of large steam turbines, generator rotors, jet engine disks, pressure vessels, spacecraft structures, and launch vehicle platforms; risk analysis procedures for use in making run/repair/retire decisions; nondestructive examination using ultrasonic, magnetic particle, and radiographic methods; development of stress intensity factor solutions using finite element methods; and nonlinear stress and heat transfer analysis.
Recent work includes development of fracture control plans for spacecraft and spacecraft systems to be launched with the Space Transportation System (shuttle); fracture mechanics based suitability-for-service analyses of large high pressure steam turbine rotors; development of creep crack growth prediction methodologies and software for use on high temperature Cr Mo steam lines and pressure vessels; research on the effect of hydrogen on crack growth rates in iron and nickel based superalloys; research on the effects of residual weld stresses on fracture; research on the crack growth threshold behavior for short cracks; development of statistically based weld examination programs; development of high temperature material testing programs for service aged Cr-Mo-V turbine rotor steels; development of an ultrasonic method for measuring the internal oxide scale formed in high temperature Cr-Mo boiler tubing; and the simulation of shock wave propagation in soils due to above ground explosions.
EDUCATION AND PROFESSIONAL BACKGROUND
- B.S. (Physics), Illinois Institute of Technology (1974)
- B.S. (Mathematics), Illinois Institute of Technology (1979)
- AA Computer Studies, Programming Ohlone College May 2006
- AS Computer Science Ohlone College May 2006
- Member, American Society for Mechanical Engineers
- Member, American Welding Society
- Registered Professional Engineer, State of Illinois #062-041413
- Registered Mechanical Engineer, State of California #M026448
- Registered Professional Engineer, State of Montana # 16685 PE
- Certified AWS Welding Inspector, No. 97120771
- Licensed Professional Engineer, West Virginia 17100
- Licensed Professional Engineer, North Carolina 032772
SELECTED REPORTS, PUBLICATIONS, AND INVITED LECTURES
Evaluation of the Rodemacher, Unit 2 Low Pressure Rotors A and B, APTECH Reports AES 06016059-2-1 and AES 06016059-2-2 (April 2006).
Evaluation of Radiant Superheater Terminal Tube Failures at Big Cajun, Units 1 and 2, APTECH Report AES 05115977-2-1 (February 2006).
Analysis of Cracking Found in the Steam Chests at Astoria, Units 40 and 50, APTECH Report AES 05065847-2-1 (November 2005).
Investigation of Autoclave Hatch Hardware with Magnetic Particle Indications, with E. Sullivan, APTECH Report AES 05045769-5-1 (October 2005).
Evaluation of the Tolerance of a Tube to Crack-like Defects Located in the Root Region of Circumferential Butt Welds, APTECH Report AES 05075853-2-1 (August 2005).
Failure Analysis of a High Pressure Main Steam Line Drain from the USS Ogden (LPD-5), with R. Moser, APTECH Report AES 05065837-5-1 (June 2005).
Main Steam Line Crossover Piping Evaluation at AES Huntington Beach Generating Station, Unit 2, APTECH Report AES 05035723-2-1 (April 2005).
Evaluation of a Cleco Rodemacher Low Pressure Rotor, APTECH Report AES 05015662-2-1 (February 2005).
Evaluation of the 2004 Bore Examination Data for AES Cayuga Unit 2 Intermediate Pressure/ Low Pressure Turbine Rotor, APTECH Report AES 04045387-2-1 (June 2004).
Review of Generator Vibration at the Termoelectrica de Mexicali Power Plant, with J. Grover, S. Lefton, and D. Bosko, APTECH Report AES 03125249-2-1 (June 2004).
Final Report on the Inspection and Evaluation of Indications Found in the High Pressure Case of Engine 2 and the Seal Weld in the Steam Chest of High Pressure Case of Engine 1 on the USS Cleveland (LPD-7), APTECH Report AES 04045379-5-2 (May 2004).
Field Report on the Reinspection and Evaluation of Indications Found in the High Pressure Case of Engine 1 and the Low Pressure Case of Engine 2 on the USS Cleveland (LPD-7), APTECH Report AES 04035350-5-1 (May 2004).
Field Report on the Inspection and Evaluation of Indications Found in the High Pressure Case of Engine 2 and the Seal Weld in the Steam Chest of High Pressure Case of Engine 1 on the USS Cleveland (LPD-7), APTECH Report AES 04045379-5-1 (April 2004).
Report on the Examination and Evaluation of Indications Found in Anchors on the USS Cleveland (LPD-7), APTECH Report AES 04035350-5-2 (April 2004).
Evaluation of Indications Found in a Rich Amine Vessel (Equipment No. 20-10-008) at the Memphis Refinery, APTECH Report AES 03105191-3-1 (October 2003).
Evaluation of Cracking Found in an 8-Inch Gate Valve of the Ultraformer Unit, APTECH Report AES 03095169-3-1 (September 2003).
Review of Drawings Relating to Solar Turbines Incorporated vs. Billy Dewayne Bybee (B&B), APTECH Report AES 03075121-5-1 (August 2003).
Evaluation of a Corroded Section of the South Bay Plant Main Gas Line, APTECH Report AES 03075123-5-1 (July 2003).
Finite Element Analysis Using ABAQUS, with G. Egan, APTECH Report AES 02094872-5-7 (May 2003).
Evaluation of the 18-Inch Extraction Pipe at Southern California Edison Company’s Mohave Generating Station, Unit 2, APTECH Report AES 03035023-2-1 (April 2003).
Evaluation of a Linear Indication Found in Feedwater Valve H72 at Sundance Generating Station, Unit 5, APTECH Report AES 03024980-2-1 (February 2003).
Engineering Investigation of a Turbine Overspeed Incident at Rosebud Power Plant, Colstrip, Montana Fifth Report: Cause of 9/21/02 Generator Gear Slippage Incident, with R. Schreiber, APTECH Report AES 02064794-4-3 (November 2002).
Evaluation of X-Ray Film for 22 mm Pressure Tubing in Room 139 on the Launch Platform, APTECH Report AES 02054768-5-1 (June 2002).
Steam Trap Sizing for Turbine Extraction Line, APTECH Report AES 02044732-2-1 (June 2002).
Evaluation of Weld Indications at Centralia, Unit 1, APTECH Report AES 02054760-2-1 (May 2002).
Evaluation of Bore Examination Data for the Low Pressure Rotor at the Naughton Plant, Unit 1, AES 02054749-2-1 (May 2002).
Evaluation of Nondestructive Examination Data for the Main Steam Stop Valves at Mohave Generating Station, Unit 1, APTECH Report AES 02044721-2-1 (May 2002).
Evaluation of X-Ray Film for 22 mm Pressure Tubing in Room 139 on the Launch Platform, AES 02054748-5-1 (May 2002).
Evaluation of X-Ray Film for 22 mm and 45 mm Pressure Tubing, APTECH Report AES 02044730-5-1 (April 2002).
Correction to Megawatt Output of Units 2 and 3 for Cooling Water Temperature, APTECH Report AES 02044733-2-1 (April 2002).
Evaluation of Bore Examination Data for the Low Pressure Rotor at the Naughton Plant, Unit 2, APTECH Report AES 02034703-2-1 (April 2002).
Evaluation of X-ray Film for 22 mm and 45 mm Pressure Tubing, APTECH Report AES 02024640-5-2 (March 2002).
Evaluation of the Vibration in the C9-21 Compressor Discharge Piping at the Lake Charles Chemical Complex, APTECH Report AES 02014605-3-1 (March 2002).
Evaluation of Defects in Stainless Steel Pressure Tubing, APTECH Report AES 00094138-5-1 (January 2001).
Evaluation of Storage Vessels X-508 and X-509 for Continued Use, APTECH Report AES 00013879-3-3 (September 2000).
Determination of Critical Crack Size for the Rocket Rod Vehicle, with R. Yee, APTECH Report AES 00013877-5-1 (February 2000).
Inspection and Evaluation of Cracking in the Steam Ports of the High Pressure Turbine of Engine 1 on the USS Cleveland (LPD-7), APTECH Report AES 99093783-5-1 (September 1999).
Analysis of the Interference Fit Connection Between the Transjector Core and Nozzle, APTECH Report AES 99063735-5-1 (August 1999).
Evaluation of Fracture Surface on a Failed Pole Extension Arm, APTECH Report AES 99073744-2-1 (July 1999).
Evaluation of the 30-Year Safety Margin for Monopoles Subjected to Fatigue Loading, APTECH Report AES 99043681-5-1 (July 1999).
Stress and Fracture-Mechanics Analysis Evaluation of On-Orbit Nickel-Hydrogen Cell, APTECH Report AES 98113569-5-1 (February 1999).
Repair of Cracks Found in Interface Connections to the Marriott Ballroom Girders, APTECH Report AES 98023307-5-3 (November 1998).
Reexamination of the High Pressure Turbine Shell for Engine 2 on the USS Coronado, APTECH Report AES 98093526-5-1 (October 1998).
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