Test tool for detecting minute leads in bimetal joints, welds, or other locations employs fine-control valve and hypodermic needle. Test item is connected in conventional manner to helium mass spectrometer tuned to read extremely small amounts of helium gas. Uniqueness of method is ability to detect tiny leaks, through surfaces, not discoverable by gross coverage of test structures by helium gas.
Locating Small Leaks in Large Structures
NASA Tech Briefs ; 7 , 2
1983-05-01
Miscellaneous
No indication
English
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