Title:
METHOD FOR DETECTING DEFECT IN POROUS MEMBRANE, AND DEFECT INSPECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/133184
Kind Code:
A1
Abstract:
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.
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Inventors:
HIRAOKA KOTARO (JP)
SUMI TOSHINORI (JP)
FUJIKI HIROYUKI (JP)
SUMI TOSHINORI (JP)
FUJIKI HIROYUKI (JP)
Application Number:
PCT/JP2014/055295
Publication Date:
September 04, 2014
Filing Date:
March 03, 2014
Export Citation:
Assignee:
MITSUBISHI RAYON CO (JP)
International Classes:
G01M3/06; B01D65/10
Domestic Patent References:
| WO2013012030A1 | 2013-01-24 |
Foreign References:
| JPS5754832A | 1982-04-01 | |||
| JP2006245685A | 2006-09-14 | |||
| JPS5616038U | 1981-02-12 | |||
| JPH0795101B2 | 1995-10-11 |
Attorney, Agent or Firm:
TSUJII Koichi et al. (JP)
辻居 Koichi (JP)
辻居 Koichi (JP)
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