Measuring and testing – Vibration – Resonance – frequency – or amplitude study
Reexamination Certificate
2005-11-08
2005-11-08
Chapman, John E. (Department: 2856)
Measuring and testing
Vibration
Resonance, frequency, or amplitude study
C073S643000, C073S594000
Reexamination Certificate
active
06962082
ABSTRACT:
The invention provides an acoustic diagnosis/measurement apparatus/method using a pulse of electromagnetic force, capable of non-destructively and precisely diagnosing or measuring corrosion, adhesion, the cover depth, and/or the diameter of a reinforcing iron rod in a structure made of reinforced concrete. A coil12is attached to a surface of a structure11including a conductor11aand a non-conductive material11bcovering the conductor11a. A current pulse is applied to the coil12thereby generating a magnetic field pulse. The magnetic field pulse causes an eddy current to be induced in the conductor11a. The conductor11ais oscillated by interaction between the eddy current and the magnetic field pulse. As a result, an acoustic signal is generated by the conductor11aand the acoustic signal is converted into an eclectic signal by an acoustic transducer14disposed to the surface of the structure11. The resultant electric signal is measured by a measurement unit15to diagnose/measure the location of the conductor11aor the state of the structure11.
REFERENCES:
patent: 4633715 (1987-01-01), Monchalin
patent: 5902935 (1999-05-01), Georgeson et al.
patent: 2004/0123665 (2004-07-01), Biodgett et al.
J. Krautkramer et al., Ultrasonic Testing of Materials, 3rdEd. (1983), Springer-Verlag, New York, pp. 157-161.
Patent Abstracts of Japan, Publication No. 2001-194347, dated Jul. 19, 2001.
Patent Abstracts of Japan, Publication No. 7-218477, dated Aug. 18, 1995.
Hashimoto Mitsuo
Takanabe Masanori
Amic Co., Ltd.
Chapman John E.
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