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Testing that Reaches the World

Rail Testing

The US rail industry is constantly faced with demands for product innovation to its infrastructure and equipment. The as a part of the competitive nature and global initiatives, the market is imposing developments that include structurally sound, environmentally benign, cost effective and safe products. Clark Testing has supported the rail industry with mechanical testing, product validation, accelerated aging and compliance certification for many years.  Clark has provided services to a variety of stakeholders in the rail industry including component light & heavy rail equipment manufacturers to MIL-810 and IEC Standards. Our fully accredited labs have provided mechanical testing services life cycle aging and structural
load testing.


With load testing capabilities of over 1,000,000 pounds, Clark is uniquely positioned to meet the needs of the rail industry. In addition to our structural capabilities, we provide EMC/EMIcompliance testing for along with field data acquisition. Having quality data from actual field conditions that components and equipment is subjected to in the field is critical in solving reliability issues. Clark has a team of field data acquisition engineers and technicians available
to measure load, stress, strain, acceleration, vibration and noise.

Testing Services on Railcar Components

Typical test objectives include:

  • Design verification and certification according to a specific standards or client specifications.
  • Component performance characterization and validation to comply with contract requirements.
  • Finite element analysis and root cause analysis

Clark Testing has the infrastructure and engineering experience to meet the mechanical testing requirements of the rail industry. In addition to our structural & fatigue testing capabilities, we also provide vibration, shock EMC/EMI and thermal testing services. Having quality data from actual field conditions that components and equipment are subjected to in the field is critical in solving reliability issues.

Testing Services


Clark Dynamics has the environmental chambers to accelerate aging and validate functional performance for longer product life expectancy. Clark can accommodate large component aging for extended periods simulating containment internal conditions as high as 170C.

Electromagnetic Compatibility (EMC)

Common to automated systems and electronics in the industry is the requirement to ensure electromagnetic compatibility of components and mitigate vulnerability to outside sources. Emissions and Immunity analysis provides insight as to the potentially undesirable propagation and reception of electromagnetic energy and radiofrequency interference.

Structural, Load and Fatigue

Unique to each test specimen are its functional and design-basis lifetime requirements. Clark’s facilities have the equipment and technical expertise to test a variety of components for mechanical fatigue and failure, life cycle, aging, accelerated aging, and simulation.

Shock and Vibration

Clark Testing’s Vibration laboratory has multiple hydraulic and electrodynamic shakers making Clark Testing the ideal fit for all your testing needs. Our Vibration laboratorys' investment in new equipment has led to Clark Testing being an industry leader in Vibration Testing.

Powertrain and Gearbox

Clark Testing has been in the powertrain & gearbox testing business for over 20 years. Over that time we have tested products ranging from small components such as starters and air motors to transmissions and axles in excess of 2000 horsepower. ciency for anything from heavy off-road industrial equipment to high performance motorized competition vehicles.

Fuels and Lubricants

The Fuels and Lubricants lab specializes in wear testing of products based on test rigs such as Four-Ball wear, Hydraulic Pump Wear, and FZG Gear. Clark Testing Fuels & Lubricants Laboratory is fully equipped to perform tests ranging from routine analyses to quality control.

For over 30 years, the team at Clark Testing has partnered with our customers to guide them through the product validation and qualification process. We are a quality driven company, functioning as an extension of our customers' engineering, product development and R&D staff to meet the technical challenges and schedule demands of the product development process.

Paul Heffernan, CEO of Clark Testing

Rail Testing Standards




CFR Title 49 Part 238

EN 12663

EN 13260

EN 13261

EN 13262

EN 13749

EN 16019

EN 50121

EN 55022

IEC 61000

IEC 62236

ISO 2017