Measuring and testing – With fluid pressure – Porosity or permeability
Patent
1975-08-06
1976-12-14
Swisher, S. Clement
Measuring and testing
With fluid pressure
Porosity or permeability
73159, G01N 1508
Patent
active
039967883
ABSTRACT:
A puck to contact an acoustic panel has open-ended compartments to flow air through then back through the face sheet of an acoustic panel while measuring the air pressure difference across the face sheet.
REFERENCES:
patent: 2706904 (1955-04-01), Hertel
patent: 3056281 (1962-10-01), Smyth
patent: 3466925 (1969-09-01), Ziegenhagen et al.
Case Morris A.
Roskos Joseph W.
Swisher S. Clement
The Boeing Company
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