Title:
NON-INVASIVE THICKNESS MEASUREMENT USING FIXED FREQUENCY
Document Type and Number:
WIPO Patent Application WO/2018/226449
Kind Code:
A3
Abstract:
A method of measuring thickness of a material generally includes applying an oscillating signal to a first electrode at a fixed frequency, passing the signal through the material to a second electrode, and measuring the magnitude of the signal reflected back to the first electrode. The thickness of the material is determined based on the measured magnitude of the reflected signal by: 1) comparing the determined magnitude to a predetermined baseline to establish a difference; and 2) identifying the thickness based on the difference. Related apparatuses are also disclosed. The material may be a vehicle tire.
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Inventors:
ANDREWS JOSEPH BATTON (US)
BROOKE MARTIN (US)
FRANKLIN AARON (US)
BROOKE MARTIN (US)
FRANKLIN AARON (US)
Application Number:
PCT/US2018/034872
Publication Date:
April 02, 2020
Filing Date:
May 29, 2018
Export Citation:
Assignee:
UNIV DUKE (US)
International Classes:
G01B7/06; G01B15/02; G01M17/02
Foreign References:
| US7775094B2 | 2010-08-17 | |||
| US4799177A | 1989-01-17 | |||
| US5216372A | 1993-06-01 | |||
| US8531329B2 | 2013-09-10 | |||
| US8794058B2 | 2014-08-05 | |||
| US20170153108A1 | 2017-06-01 | |||
| US9797703B2 | 2017-10-24 | |||
| US20170307349A1 | 2017-10-26 |
Other References:
See also references of EP 3615885A4
Attorney, Agent or Firm:
OWEN, John R. (US)
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