Thomas Calko, P.E.

Group Head, Field Service Engineering; Staff Engineer II
Years of Experience:
10
Education & Licenses:

Master of Science, Mechanical Engineering, The University of Pittsburgh, Pittsburgh, PA
Bachelor of Science, Mechanical Engineering, Youngstown State University, Youngstown, OH
Registered Professional Engineer, State of Ohio
Vibration Analyst – Category IV
Certified Welding Engineer (CWEng)
Certified Welding Inspector (CWI)

Areas of Specialization:

Machinery condition monitoring and assessment using vibration analysis
Advanced vibration data acquisition, analysis, and troubleshooting for complex problems
Vibration control methods
Vibration-induced stress and fatigue assessment on piping
Fracture mechanics and assessment of crack-like flaws
Stress analysis using finite element analysis
Weld residual stress analysis using finite element analysis techniques
Welding repair codes: ASME Section XI, ASME PCC-2, National Board NB-23
ASME Section IX, welding procedure and welder performance qualifications
ASME Section XI, repair and replacement program

Overview:

Thomas Calko is a staff engineer with the Rotating Equipment, Vibration, & Dynamics Team at Equity. Prior to joining Equity, Thomas worked as a maintenance engineer at a nuclear electricity-generating station where he served as a vibration engineer and a welding engineer. 

As a vibration engineer, he was responsible for the condition monitoring of a wide range of pumps, fans, and motors. He has worked with a number of different vibration data acquisition systems for steady state and transient vibration data acquisition and testing. He has experience designing vibration control solutions to resonance problems, especially on vertical pumps. 

As a welding engineer, Thomas was responsible for plant maintenance welding activities, which included structural and piping repairs and modifications. He has experience qualifying welders and welding procedures according to ASME Section IX. He is also a Certified Welding Inspector.

Publications:

  1. Bifano, M.F.P. and Calko, T.M., “Fitness-for-Service of In-Service Thermowells via Experimental Damping Test,” ASME 2024 Pressure Vessels & Piping Conference, July 2024.
  2. Calko, T.M. and Bifano, M.F.P., “Two Case Studies: Vibration Fatigue Cracking in Reciprocating Compressor Suction and Discharge Bottle Nozzles,” Vibration Institute Annual Training Conference, July 2023.
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