The recent derailment of a Norfolk Southern train in East Palestine, Ohio, resulting in a toxic chemical spill was a rare but not unknown event on America’s railroads. Like every other wheeled vehicle in commercial service, rolling stock relies on anti-friction bearings. And like all ball and roller bearings, heat is the major cause of failure. For safety-critical applications in railways, thermography is used to check passing rolling stock for hot bearings, setting an alarm to alert the e…
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