NASA NTRS · 19940000301
Detecting Leaks With An Infrared Camera
Abstract
Proposed test reveals small leak in gas pipe - for example, leak through fatigue crack induced by vibration - even though insulation covers pipe. Infrared-sensitive video camera aimed at part(s) containing suspected leak(s). Insulated pipe pressurized with gas that absorbs infrared light. If crack were present, escaping gas travels along outside of pipe until it reached edge of insulation. Gas emerging from edge of insulation appears as dark cloud in video image.
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Easter, Barry P., Steffins, Alfred P., Jr.. 1994-05-01. Detecting Leaks With An Infrared Camera. https://ntrs.nasa.gov/citations/19940000301
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