United Technologies Corporation

Balkrishna S Annigeri

Michael Winter

Leroy H Favrow

Robert J Haas

Jason S Wegge

Ronald I Holland

David M Sanford

Fanping Sun

Howard A Winston

A structural integrity monitoring system includes a piezoelectric sensor that is adapted to be secured to or embedded within an item of interest. A resistive element is placed in series with the piezoelectric sensor. An output from the series combination of the resistive element and the sensor is conditioned and then transmitted wirelessly to a remote location. An interface located at the remote location receives the transmitted signal, determines the content of the signal and provides an output indicative of the structural integrity of the item of interest.

Structural integrity monitoring system including wireless electromechanical impedance measurement

An apparatus for monitoring the growth of surface cracks in materials includes a means for applying a load to a specimen to simulate actual use of the specimen, means for illuminating the specimen, means for capturing images of the specimen, and means for processing the images to monitor crack growth in the specimen. Optionally, the means for processing can be used to control the other means.

Crack monitoring apparatus

An apparatus for monitoring the growth of surface cracks in materials includes a servo-hydraulic test machine which applies a load to a specimen according to a predetermined loading regime designed to induce crack growth in the specimen, a UV laser for illuminating the specimen with a light having a frequency greater than the frequency of incandescent light, a UV video camera and a two dimensional imaging computer. Optionally, the two dimensional imaging computer can be used to control the servo-hydraulic test machine.

High temperature crack monitoring apparatus

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Manchester, CT, United States of America

Balkrishna S Annigeri