LASER ULTRASONIC FLAW DETECTOR - MITSUBISHI HEAVY IND LTD

Title:

LASER ULTRASONIC FLAW DETECTOR

Document Type and Number:

WIPO Patent Application WO/2011/105499

Kind Code:

A1

Abstract:

Disclosed is a laser ultrasonic flaw detector wherein laser light having a single kind of wavelength (λ0) which is emitted from a laser light source (11) is converted by a wavelength shifter (12) to laser light including at least two kinds of wavelengths (λ1, λ2), and is divided by a branching filter (13) into the laser light having the first wavelength (λ1) and the laser light having the second wavelength (λ2). The output and the pulse width of the laser light having the first wavelength (λ1) are adjusted by a first controller (14) so as to become suited for generating an ultrasonic vibration without causing damage to an object (100) to be inspected. The output and the pulse width of the laser light having the second wavelength (λ2) are adjusted by a second controller (15) so as to become suited for detecting the above-mentioned ultrasonic vibration. The laser lights are unified into a single laser light by a multiplexer (16) and irradiated onto the surface of the object (100) to be inspected.

More Like This:

JPH0915214	SAMPLE HOLDER FOR PHOTOABSORPTION MEASURING DEVICE
WO/1987/004250	APPARATUS FOR DETECTING DEFECTS, PARTICULARLY IN CASTINGS
WO/2010/077044	ACOUSTIC ULTRASONIC WAVE IMAGING APPARATUS

Inventors:

ISHIOKA MASAHITO (JP)

Application Number:

PCT/JP2011/054163

Publication Date:

September 01, 2011

Filing Date:

February 24, 2011

Export Citation:

Click for automatic bibliography generation Help

Assignee:

MITSUBISHI HEAVY IND LTD (JP)
ISHIOKA MASAHITO (JP)

International Classes:

G01N29/00; G02F1/01; G02F1/35; G02F1/365; G02F2/02

Foreign References:

JPH0727746A	1995-01-31
JP2006125996A	2006-05-18
JP2003508771A	2003-03-04
JP2009544038A	2009-12-10
US20080291963A1	2008-11-27
US20080291963A1	2008-11-27
US20080016965A1	2008-01-24
JP2003508771A	2003-03-04

Other References: