Measuring and testing – With fluid pressure – Porosity or permeability
Patent
1978-11-02
1980-04-22
Goldberg, Gerald
Measuring and testing
With fluid pressure
Porosity or permeability
73159, G01N 1500
Patent
active
041988531
ABSTRACT:
The present invention provides a method and apparatus for evaluating the porosity of a sheet material at a given value of gas flow or pressure drop (PD), with account being taken of the following relationship between the parameters of flow and PD:
REFERENCES:
patent: 2755660 (1956-07-01), Kammermeyer et al.
patent: 2861451 (1958-11-01), Emmons
Graham John F.
Hardy Donald
American Filtrona Corporation
Goldberg Gerald
Roskos Joseph W.
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