Technical Papers

Technical Publications by A. Sofronas

(Sorry but not available through A. Sofronas, only through publishers)

1. Case History Series in Hydrocarbon Processing Magazine

Case 1: The Fatigued Motor Shaft, 2/2001

Case 2: The Hidden Load In A Three Bearing Machine, 4/2001

Case 3: Shaft Galling In A Bushing, 6/2001

Case 4: The Wrong Bearing In The Right Place, 8/2001

Case 5: Can We Continue To Operate The Vessel, 10/2001

Case 6: Keep Those Bolts Tight,12/2001

Case 7: Why Is The Agitator Agitated, 2/2002

Case 8: Analyzing A Leaking Heat Exchanger Gasket, 4/2002

Case 9: The Machine Remembered, 6/2002

Case 10: Vibrating Pipe Failures, 8/2002

Case 11: Excessive Ball Seat Wear, 10/2002

Case 12: A Compressor Rod Failure, 12/2002

Case 13: Large Internal Thread Strip Out, 2/2003

Case 14: Analyzing Crankshaft Failures, 4/2003

Case 15: Thermally Bowed Shaft, 6/2003

Case 16: A Piping Failure Due To Water Hammer, 8/2003

Case 17: Wreck Of A Centrifugal Pump, 10/2003

Case 18: Problem Solving Technique, 12/2003

Case 19: A Steam Turbine Diaphragm Failure, 2/2004

Case 20: Cold Start Up Bearing Failures, 4/2004

Case 21: Analyzing A Spline Failure, 6/2004

Case 22: The Mysterious Bending Of Impeller Blades, 8/2004

Case 23: Analyzing A Crack Like Defect In A Vessel Wall, 10/2004

Case 24: The Moving Gearbox, 12/2004

Case 25: The Leaking Flange Gasket, 2/2005

Case 26: Gathering Failure Data, 4/2005

Case 27: Brittle Fracture Concerns On Vessels, 6/2005

Case 28: Steel Component Fretting, 8/2005

Case 29: Pressure Build Up In A Blocked In Pipe, 10/2005

Case 30: One Cause Of A Pump Not Pumping, 12/2005

Case 31: The Analytical Modeling Niche, 2/2006

Case 32: Piping Flexibility Concerns, 4/2006

Case 33: Vessels In High Cycle Service, 4/2006

Case 34: Hydrotesting Or Pneumatic Testing, 9/2006

Case 35: Technical Checklists, 11/2006

Case 36: Pipe Bowing Stresses Due To Thermal Differences, 1/2007

Case 37: Can You Tell Me How Long It Will Last, 3/2007

Case 38: Extruder Wear Prediction, 5/2007

Case 39: The Vibration Failure Of A Heat Exchanger, 7/2007

Case 40: Troubleshooting Gear Face Damage, 9/2007

Case 41: Cracking of Rotary Dryer, 11/2007

Case 42: Torsional Vibration Problems Can Be Costly, 1/2008

Case 43: Containing a Failed Impeller, 3/2008

Case 44: Cracking Due To Sudden Temperature Changes In Piping, 5/2008

Case 45: Predicting Crack Growth On A Machine, 7/2008

Case 46: Rotary Screw Compressor Failure, 9/2008

Case 47: Refrigeration System Vibration, 11/2008

Case 48: Troubleshooting A Roller Bearing Failure, 1/2009

Case 49: Isolating Foundations From Machinery Vibrating Forces, 4/2009

Case 50: Gearbox Input Shaft Failure Analysis, 5/2009

Case 51: Phantom Failures, 7/2009

Case 52: Problems With Blocked In Centrifugal Pumps, 9/2009

Case 53: Electrical Faults Can Cause Shaft And Gear Failures, 11/2009

Case 54: Motor Vibration Or Some Other Cause, 1/2010

Case 55: Effect Of A Sudden Temperature Change In A Gearbox, 3/2010

Case 56: Quick Troubleshooting Of Shaft Failures, 5/2010

Case 57: Troubleshooting The Cause Of Sudden Impacts, 7/2010

Case 58: Piston Pin Plug Wear, 9/2010

Case 59: Heat-Up Rates and Thermal Cracking, 11/2010

Case 60: Socket Weld Failure, 1/2011

Case 61: Pressure Loss Reactor, 3/2011

Case 62: Useful Shaft Stress Equations to Remember, 5/2011

Case 63: Analyzing Off Resonance Amplitudes, 7/2011

Case 64: Averages Can Be Misleading on Service Life Data, 9/2011

Case 65: Taking Risks and Making High-Level Presentations, 11/2011

Case 66: Fiberglass Mixing Tank Flexing Vibration, 1/2012

Case 67: Extruder Blow-Back, 3/2012

Case 68: Pneumatic Testing Dangers, 5/2012

Case 69: Heat Up Rates and Rubs On a Steam Turbine, 7/2012

Case 70: Twenty Rules of Troubleshooting That May Help, 9/2012

Case 71: Statistical Visual Data Can be Useful in Troubleshooting, Part 1, 11/2012

Case 71: Statistical Visual Data Can be Useful in Troubleshooting, Part 2, 3/2013

Case 72: Interaction Between Disciplines When Troubleshooting, 5/2013

Case 73: Useful Troubleshooting Tools to Keep at Hand, 7/2013

Case 74: Determining Impact Forces When Troubleshooting, 8/2013

Case 75: Analyzing Wear When Troubleshooting, 10/2013

Case 76: Simple Troubleshooting Analysis Tips Are Useful, 12/2013

Case 77: Random Deck Vibration With Beats, 2/2014

Case 78: Writing Concisely Is A Definite Work Skill, 4/2014

Case 79: Integral Compressor Failure, 6/2014

Case 80: Sudden Temperature Change In A Centrifugal Compressor, 8/2014

Case 81: Considering Consulting As A Career, 10/2014

Case 82: Precautions On Purchasing First Of Its Kind Equipment, 12/2014

Case 83: What are Useful Questions to Ask Before Starting a Vibration Analysis, 3/2015

Case 84: Remaining Service Life of Plant Equipment Can Be Determined, 5/2015

Case 85: Learning’s on Hydraulically Fitted Hubs, 7/2015

Case 86: Causes of Auger Feeder Screw Failures, 9/2015

Case 87: How an Engineering Consultant Can Help Your Company, 11/2015

Case 88: Normal Operating Loads Do Not Usually Cause Failures, 1/2016

Case 89: Cracking of Welds Due to Weld Fatigue, 3/2016

Case 90: Precautions When Working Near Equipment, 5/2016

Case 91: Helping Those Interested in a Technical Career, 7/2016

Case 92: The Danger of Pneumatic Testing Complacency, 9/2016

Case 93: Hints on Searching the Literature, 11/2016

Case 94: Why Mentors are Important for Industry, 1/2017

Case 95: How to Avoid Being Overwhelmed in a Failure Situation, 3/2017

Case 96: Career Paths - Technical and Management, 5/2017

Case 97: Beware of Confirmation Bias in Industry, 7/2017

Case 98: Why Performing Calculations is Important to an Engineer’s Career, 10/2017

Case 99: We All Contribute to Each Other’s Success, 1/2018

Case 100: A Failure Where Sloshing Was a Cause 5/2018

Case 101: Preventing Crankshaft Failures In Large Reciprocating Engines, 6/2018

Case 102: Use Caution When Specifying A Safe Hydrotesting Distance, 8/2018

Case 103: Addressing Heat Exchanger Tube Leaks, 10/2018

Case 104: Energy In Steam Boiler Explosions, 11/2018

Case 105: Temperature Distribution Along A Flare Line, 2/2019

Case 106: Delayed Fireball Type Explosions, 4/2019

Case 107: Weld Failures In Vibrating Equipment, 6/2019

Case 108: Failure Analysis Computations Differ From Design, 8/2019

Case 109: Catastrophic Failures And The Human Factor, 10/1019

Case 110: A Local Flooding Event At A Plant Site, 1/2020

2. Integral Gas Engine Compressor Failures and Solutions, Hydrocarbon Processing Magazine, December 2003

3. Solutions To Common Rotational Failures, Petroleum Technology Quarterly, p.81, Summer 2003

4. The Effects Of Manufacturing Tolerances On Pressure Vessels In High Cycle Service, A.Sofronas, B.Fitzgerald, E. Harding, A.S.M.E. PVP Vol. 347,1997

5. On The Application Of Continuous System Modeling To Engine Vibration Problem, Masters Dissertation, Pennsylvania State University, 1972

6. A Solution For Variable Curved Beam Problems With Applications To Engine Design, A.S.M.E. 73-DGP-2, 1973

7. A Solution For Engine Mode Vibration Characteristics By Design Charts, A.S.M.E. 73-DGP-18, 1973

8. Stopping Torsional Vibration, Machine Design Magazine, p.168, June 1974

9. Beams On Flexible Supports, Machine Design Magazine, p.131, August 1973

10. Superposition: When To Use It, Machine Design Magazine, p.116, Jan 1974

11. Will Management But Your Idea, Machine Design Magazine, p.111, Sept 1974

12. The Formation And Control Of Drilling Burrs, Doctoral Dissertation, University Of Detroit, 1976

13. Reduction of Burr Formation In Drilling, S.M.E. MR 75-376,1975

14. The Effects Of System Stiffness, Workpiece Hardness and Spindle Speed On Drilling Burrs, S.M.E. MR 76-132, 1976

15. Model Development For An Exit Burr Thickness As A Function Of Drill Geometry And Feed, S.M.E. MR 76-253, 1976

16. Vibratory Finishing Optimization Using An Experimental Design, A. Sofronas, S. Taraman, International Journal For Production Research, 1977