Sofronas, A.
Tony Sofronas, D. Eng, was the worldwide lead mechanical engineer for ExxonMobil Chemicals before retiring. He now owns Engineered Products, which provides consulting and engineering seminars on machinery and pressure vessels. Dr. Sofronas has authored two engineering books and numerous technical articles on analytical methods.
Case 44: Cracking due to sudden temperature changes in piping
Excessive thermal stresses can be the cause
Case 43: Containing a failed impeller
A quick analysis can help direct further efforts
Case 42: Torsional vibration problems can be costly
The results are hammering of the gears and fretting of the splines
Case 40: Troubleshooting gear face damage
A simple analysis can help in determining the root cause of the failure
Case 39: Vibration failure of a heat exchanger tube
Flow-induced vibration damage is a commom problem
Case 38: Extruder wear prediction
An analysis can help avoid wear problems before they occur
Case 37: Can you tell me how long it will last?
Troubleshooting differs from design
Case 36: Pipe bowing stresses due to thermal differences
A pipe partially filled with a hot cycling fluid can cause weld failures
Case 35: Technical checklists
Our memories are not always adequate
Case 34: Hydrotesting or pneumatic testing?
There is a big difference in safety between the two
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