Measuring and testing – Vibration – By mechanical waves
Patent
1978-05-30
1980-07-01
Ciarlante, Anthony V.
Measuring and testing
Vibration
By mechanical waves
73626, G01N 2904
Patent
active
042100283
ABSTRACT:
An apparatus for ultrasonically measuring concentrations of stress in objects of interest. The apparatus includes an ultrasonic transducer array for propagating acoustic waves in an object of interest along a plurality of determinable directions and from a plurality of determinable positions. A time interval counter measures the time of flight of the acoustic waves along the determinable directions and from the determinable positions. The time of flight measurements are reconstructed into a map of the variations in acoustic velocity within the object. The changes in acoustic velocity are then mathematically converted into a map of stress concentration areas in the object of interest.
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Ciarlante Anthony V.
Electric Power Research Institute Inc.
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