Inspecting and Evaluating Amtrak’s Locomotives


At a Glance

  • Client(s)
  • National Railroad Passenger Corporation (Amtrak)
  • Project Location(s)
  • Ambler / Philadelphia, Chicago
LTK-designed railcarExtending the lives of locomotives. 

Amtrak wanted a detailed engineering assessment of its current fleet of General Electric P40 and P42 locomotive carbodies and trucks to determine whether the locomotive carbodies and trucks would last up to 25 additional years of service.

LTK’s conducted in-shop inspections and an instrumented road test and provided Amtrak with an analysis and recommendations. For the inspections, we examined 25% of the fleet including trucks, under-body, engine and radiator room, side ladders and doors, overall skin, and internal posts and supports. Once specific parts of the carbody and truck were identified possible problems, LTK proposed that those areas be tested dynamically using sensors, strain gauges, and data acquisition equipment. The dynamic test was performed on a revenue service run between Chicago and Los Angeles.

The LTK team developed preliminary repair plans based on FEA truck modeling and recommended strengthening plates, drainage modifications, carbody post and skin section replacement, and in-kind corrosion repairs.

Amtrak has contracted LTK to provide a detailed engineering assessment of its current fleet of General Electric P40 and P42 locomotive carbodies and trucks to determine whether the locomotive carbodies and trucks would last up to 25 additional years of service.

LTK’s conducted in-shop inspections and an instrumented road test and provided Amtrak with an analysis and recommendations. For the inspections, we examined 25% of the fleet including trucks, under-body, engine and radiator room, side ladders and doors, overall skin, and internal posts and supports. Once specific parts of the carbody and truck were identified possible problems, LTK proposed that those areas be tested dynamically using sensors, strain gauges, and data acquisition equipment. The dynamic test was performed on a revenue service run between Chicago and Los Angeles.

The LTK team developed preliminary repair plans based on FEA truck modeling and recommended strengthening plates, drainage modifications, carbody post and skin section replacement, and in-kind corrosion repairs.

LTK Capabilities Used on This Project