Resources Contact Us Home
Measurement of corrosion with curved ultrasonic transducer, rule-based processing of full echo waveforms

Image Number 13 for United States Patent #4953147.

An acoustic transducer having a curved surface to match the inner or outer surfaces of a target surface such as a cylindrical borehole tubular is disclosed. A sequence of excitation pulses causes the transducer to launch a series of high-frequency, short duration acoustic energy pulses toward the tubular. The transducer face receives echos reflected from the surface of the tubular, including multiple echo structures indicative of the repeated echoing of the acoustic energy between the inner and outer faces of the tubular. The characteristics of the tubular surfaces, including the location, area and depth of any corrosion pits on the tubular surfaces, are determined from the full echo waveform. A rule-based Expert System analyzes the full waveform of the echo pulses returned from the tubular to determine the most likely characteristics of the surfaces which produced the full echo waveform. More specifically, the Expert System uses expertise about the acoustic properties of the target medium, as well as constraints chosen by an expert, to determine which signal structures are informational and which signal structures are confounding. As the confounding structures are selectively eliminated from consideration, the Expert System draws conclusions about the condition of the target surfaces.

  Recently Added Patents
Antenna device
Subband SNR correction in a frequency selective scheduler
Method and apparatus for wireless transmission of diagnostic information
Cartridge for conducting a chemical reaction
Processing biomass
Synchronization scheduling apparatus and method in real-time multi-core system
Process for improving the hydrolysis of cellulose in high consistency systems using one or more unmixed and mixed hydrolysis reactors
  Randomly Featured Patents
Five- and six-coordinate precursors for titanium nitride deposition
Circuit board and telephone apparatus
Electronic identifier payment systems and methods
Information processing device, information processing method, and program
Device for examining a body by means of gamma rays or X-rays
Illumination system and television using the same
Systems, methods and computer program products for indexing, searching and visualizing media content
Methods, architectures, circuits, software and systems for CRC determination
Apparatus and method for moving a flow of air and particulate through a vacuum cleaner
Substrate processing unit