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 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
Case 33: Vessels in high-cycle service
Weld failures can be due to manufacturing defects
Case 32: Piping flexibility concerns
Thermal upsets can cause pump problems due to piping loads
Case 31: The analytical modeling niche
A simple model can greatly expand your equipment knowledge
Case 30: One cause of a pump not pumping
A stronger pump can block out the weaker one
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