Martin B Morris

US Patent:

58179453, Oct 6, 1998

Filed:

Apr 15, 1996

Appl. No.:

8/631955

Inventors:

Martin Jesse Morris - Edwardsville IL
Kirk Sullivan Schanze - Gainesville FL

Assignee:

McDonnell Douglas

International Classification:

G01L 124

US Classification:

73800

Abstract:

A system (50) for determining strain includes: a stimulating light source (54, 56); a device (64) for placing stress on an object (58); a number of local strain gauges (66) attached to the object (58); and an image capturing device (62, 64). A controller (52) is coupled to the stimulating light source (54, 56) and has a signal that turns on the stimulating light source (54, 56). The controller (52) receives a strain signal from each of the local strain gauges (66) located on the object (58). The controller (66) has an image signal that determines when the image capturing device (62, 64) captures an image.

US Patent:

57319952, Mar 24, 1998

Filed:

Apr 12, 1996

Appl. No.:

8/631083

Inventors:

Michael Edward Benne - St. Paul MO
John Francis Donovan - Florissant MO
Christopher Allen Kelble - Maryland Heights MO
Thomas Allen Kihlken - St. Louis MO
Martin Jesse Morris - Edwardsville IL
Alexander Pal - Glen Carbon IL

International Classification:

G01N 900

US Classification:

364558

Abstract:

A method of determining pressure requires that a three dimensional surface of an object (14) be covered with a pressure sensitive coating. Next a raw first image (74) is acquired while the object (14) is not under test and a raw second image (74) is acquired while the object is under test. The raw first image (74) and the raw second image (74) are adjusted for a dark image (76) to form an adjusted first image and an adjusted second image. The adjusted first image and the adjusted second image are mapped (78) from a two dimensional representation onto a three dimensional model, to form a first model and a second model. A ratio model is formed (80) by taking the ratio of the intensity of the first model and the second model. Finally, a pressure is determined (84) for every surface that forms the three dimensional model.