Apparatus and a method of locating a source of acoustic emission

Details Apparatus and a method of locating a source of acoustic emission Apparatus and a method of locating a source of acoustic emission

1998-09-22

2000-05-23

Williams, Hezron

Measuring and testing

Vibration

By mechanical waves

73801, 702 36, 367127, G01N 2914, G01D 700

Patent

active

060653426

ABSTRACT:
An apparatus (14) for locating a source of acoustic mission in an article (10) comprises a plurality of spaced transducers (18) which supply output signals corresponding to detected acoustic emission activity to a processor (24). Artificially induced acoustic emissions (12) are generated in the article (10) by directing a laser beam (33) onto the article (10). A camera (40) produces an image of the article (10) and any laser flashes. A processor (42) converts the positions of the laser flashes to coordinates on the article (10). A processor (24) analyses parameters of the acoustic emission in the output signals and the coordinates of the laser flashes to infer the mathematical relationship between the parameters and location of acoustic emissions. The same parameters for acoustic emissions of unknown source location are used to calculate the location of the unknown source with the deduced mathematical relationship and the calculated coordinates are converted by processor (42) to a position on the image produced by the camera (40) and the processor (24) provides an indication of the accuracy of the calculation.

REFERENCES:
patent: 3875381 (1975-04-01), Wingfield et al.
patent: 3985024 (1976-10-01), Horak
patent: 4089224 (1978-05-01), Scott et al.
patent: 4592034 (1986-05-01), Sachse
patent: 4910718 (1990-03-01), Horn
patent: 4979124 (1990-12-01), Sachse
patent: 5010503 (1991-04-01), Paton et al.
patent: 5115681 (1992-05-01), Bouheraoua
patent: 5270950 (1993-12-01), Cowley et al.
patent: 5505090 (1996-04-01), Webster
patent: 5577166 (1996-11-01), Mizuno
patent: 5924986 (1999-07-01), Chandler et al.

Affiliated with

Also associated with

Rating

Apparatus and a method of locating a source of acoustic emission does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus and a method of locating a source of acoustic emission, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and a method of locating a source of acoustic emission will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1828827