NASA NTRS · 19780000084
Rapid leak detection with liquid crystals
Abstract
Small leaks in vacuum lines are detected by applying liquid-crystal coating, warming suspected area, and observing color change due to differential cooling by leak jet. Technique is used on inside or outside walls of vacuum-jacketed lines.
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Heisman, R. M., Iceland, W. F., Ruppe, E. P.. 1978-06-01. Rapid leak detection with liquid crystals. https://ntrs.nasa.gov/citations/19780000084
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