Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Measurement of corrosion with curved ultrasonic transducer, rule-based processing of full echo waveforms










Image Number 16 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
Method, apparatus or computer program for changing from scheduled to unscheduled communication modes
Extensible, filtered lists for mobile device user interface
Vacuum switch and electrode assembly therefor
Method for selective deposition of a semiconductor material
End to end email monitor
Reticle for a riflescope or other projectile-weapon aiming device
Compounds, compositions and use
  Randomly Featured Patents
Electrical connector
Paper sheet feeders having multiple storage magazines
Gas-filled incandescent lamp with integral fuse assembly
Bowling game using sets of predetermined pin fall objectives
Method and measuring arrangement for measuring paper surface
Apparatus capable of air-filtering and heat-dissipating and adapted for use in a computer
Mounting assembly for image intensifier tube in optical sight
Portable power source to provide power to an electronic device via an interface
Information processing apparatus and method thereof
Organoruthenium compound for use in chemical vapor deposition and chemical vapor deposition using the same