Measuring and testing – Vibration – By mechanical waves
Patent
1994-06-16
1995-11-28
Williams, Hezron E.
Measuring and testing
Vibration
By mechanical waves
73661, G01N 2928, G01H 1100
Patent
active
054697441
ABSTRACT:
An apparatus for acoustically inspecting a workpiece has a tubular member with a membrane sealing an end of the tube to form a first chamber. An acoustic transducer assembly is mounted in the tubular member. An adapter secured to the tubular member is adapted to contact the workpiece and space the membrane from the workpiece and form a second chamber. In operation, the transducer generates an acoustic wave that travels through coupling fluid disposed in the chambers to strike the workpiece. The acoustic wave is reflected from the workpiece, received by the transducer assembly, and a corresponding electrical signal is sent to a processor for evaluation. Additional features include a fluid conduit providing the independent coupling fluid, a spacer that accommodates workpiece surface variations while maintaining acoustic coupling with the workpiece, and a vacuum housing that removes excess coupling fluid from around the inspection apparatus and workpiece mating surface.
REFERENCES:
patent: 4563900 (1986-01-01), Harada
patent: 4566333 (1986-01-01), Chubachi
patent: 4796632 (1989-01-01), Boyd
patent: 4813402 (1989-03-01), Reichenberger
"A Computerized Ultrasonic Multiple Array Real-Time Inspection System for the Space Shuttle External Tank Liquid Hydrogen Barrel Welds"; R. G. Harrington; Review of Progress in Quantitative Nondestructive Evaluation; 1984; vol. 3, pp. 1433-1439.
"A Novel Acoustic Coupling Device Using Permeable Membrane"; C. F. Buynak et al.; Amer. Society for Nondestructive Testing, Inc.; Jun. 1987; pp. 743-746.
"Fatigue-induced disbonds in adhesive lap splices of aluminum and their ultrasonic detection"; D. K. Hsu et al.; SPIE Proceedings; vol. 2001; Jul. 1993; pp. 2-13.
"Development of Ultrasonic Inspection for Adhesive Bonds in Aging Aircraft"; D. K. Hsu et al.; Materials Evaluation; vol. 51, No. 12; Dec. 1993; pp. 1390-1397.
Hsu David K.
Patton Thadd C.
Iowa State University & Research Foundation, Inc.
Oda Christine K.
Williams Hezron E.
LandOfFree
Apparatus for acoustically inspecting a workpiece 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 for acoustically inspecting a workpiece, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for acoustically inspecting a workpiece will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2005577