Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1996-01-02
1997-12-30
Tokar, Michael J.
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
25033911, 250330, G01N 2101, G01N 2171
Patent
active
057033625
ABSTRACT:
A method for nondestructive
oncontact detection of alpha case on a surface of a workpiece made of titanium or a titanium-based alloy. Infrared radiation is reflected off of a selected portion of the workpiece surface and sensed by a detector which may comprise a scanning infrared radiometer, an infrared camera, or a spot radiometer. The presence of any alpha case in the selected portion of the workpiece surface is detected by comparing the intensity of the reflected infrared radiation to a predetermined intensity known to be indicative of the absence of alpha case. An image of the reflected infrared radiation may be created and the step of detecting the presence of alpha case may include the step of comparing the intensity of the reflected infrared radiation within the image to the predetermined intensity. According to a preferred embodiment, a target may be disposed between the source of the infrared radiation and the workpiece surface so as to create a predetermined pattern within the image. In this embodiment, the step of detecting may further include the step of comparing the clarity of the predetermined pattern with the image created from the reflected infrared radiation from the selected portion of the workpiece surface to the clarity of the predetermined pattern within an inspection standard image known to be indicative of the absence of alpha case.
REFERENCES:
patent: 3434332 (1969-03-01), Maley
patent: 4067734 (1978-01-01), Curtis et al.
patent: 4523846 (1985-06-01), Breckinridge et al.
patent: 4622079 (1986-11-01), Chang et al.
patent: 4703806 (1987-11-01), Lassow et al.
patent: 4818118 (1989-04-01), Bantel et al.
patent: 5075552 (1991-12-01), McClelland et al
patent: 5111048 (1992-05-01), Devitt et al.
patent: 5266806 (1993-11-01), Barber
patent: 5386118 (1995-01-01), Kitagawara et al.
patent: 5444241 (1995-08-01), Del Grande et al.
patent: 5455079 (1995-10-01), Oden et al.
Bantel Thomas E.
Devitt John W.
Edwards Thomas R.
General Electric Company
Hess Andrew C.
Tokar Michael J.
Traynham Wayne O.
Tyler Virgil O.
LandOfFree
Method for nondestructive/noncontact detection and quantificatio does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for nondestructive/noncontact detection and quantificatio, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for nondestructive/noncontact detection and quantificatio will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-204825