Measuring and testing – Vibration – Resonance – frequency – or amplitude study
Patent
1986-04-01
1987-10-27
Birmiel, Howard A.
Measuring and testing
Vibration
Resonance, frequency, or amplitude study
73602, G01N 2904
Patent
active
047021110
ABSTRACT:
An improved non-destructive sonic testing apparatus is disclosed which is specially adapted for use in assessing the integrity of wooden utility poles. In one embodiment, the sonic testing apparatus of the present invention operates to perform a Fourier analysis on a signal which has been transmitted through a pole to be tested. Two or more criteria selected from the group of mode, mean, median and range are then determined for the resulting waveform and compared in order to provide a visual display representative of the condition of the pole being tested. In another embodiment of the present invention a software peak seeking algorithm is utilized to provide an envelope waveform from which successive half lives are determined. The relative time duration for successive half lives are compared to provide an indication of the amount of decay.
REFERENCES:
patent: 2418284 (1947-04-01), Winchel et al.
patent: 2549076 (1951-04-01), Gallagher et al.
patent: 2946217 (1960-07-01), Fruengel
patent: 3291143 (1966-12-01), Russell
patent: 3345861 (1967-10-01), Heath
patent: 3361225 (1968-01-01), Nichols
patent: 3531983 (1970-10-01), Heath et al.
patent: 3580056 (1971-05-01), Warner
patent: 3877294 (1975-04-01), Shaw
patent: 4059988 (1977-11-01), Shaw
patent: 4342229 (1982-08-01), Massa
patent: 4399701 (1983-08-01), Dunlop
patent: 4400980 (1983-08-01), Lepert
patent: 4479386 (1984-10-01), Beggs et al.
patent: 4502329 (1985-03-01), Fukunaga et al.
patent: 4519245 (1985-05-01), Evans
Article entitled "Extending Wood Pole Life" by William C. Hayes, Electrical World, Feb. 1986, pp. 41-47.
American Energy Services, Inc.
Birmiel Howard A.
LandOfFree
Sonic wood testing apparatus and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sonic wood testing apparatus and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sonic wood testing apparatus and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1265625