Method for detecting defect in porous membrane, and defect inspection device

In the present invention, a signal resulting from a defect in a porous membrane is accurately differentiated from a detected signal; in particular, a defect in a porous hollow-fiber membrane is correctly detected. A defect-detection method for a device for detecting a defect in a porous hollow-fiber...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	FUJIKI HIROYUKI, SUMI TOSHINORI, HIRAOKA KOTARO
Format:	Patent
Sprache:	eng
Schlagworte:	MEASURING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PHYSICS SEPARATION TESTING TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR TRANSPORTING
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Beschreibung
Zusammenfassung:	In the present invention, a signal resulting from a defect in a porous membrane is accurately differentiated from a detected signal; in particular, a defect in a porous hollow-fiber membrane is correctly detected. A defect-detection method for a device for detecting a defect in a porous hollow-fiber membrane, the method having: a measurement step for measuring, at a prescribed sampling cycle, a signal from a light-receiving unit; a separation step for separating the measured signal into a signal portion caused by air bubbles from a defect, and a noise signal portion; and an output step for outputting, as a result of the defect inspection on the porous hollow-fiber membrane, the signal portion caused by air bubbles.