Measuring and testing – Vibration – By mechanical waves
Reexamination Certificate
2005-04-26
2005-04-26
Williams, Hezron (Department: 2856)
Measuring and testing
Vibration
By mechanical waves
C073S602000, C073S622000
Reexamination Certificate
active
06883376
ABSTRACT:
A method for the determining ultrasonic sound propagation speed and wall thickness of a tubular object. Time-domain and frequency-domain analyses are used, where the latter can determine acoustic dispersion if the specimen is made up of a dispersive material. Data is sensed from a series of transmitted ultrasonic waves, some of which are reflected. The data can be used to calculate speed of sound in the tube, as well as wall thickness. Inherent in the data is the speed of the ultrasonic wave; accordingly, correction for temperature variations in the tube is not required. The calculations based on measured speed of sound quantities produces more accurate results than in calculations where the speed of sound in the specimen is assumed.
REFERENCES:
patent: 3930404 (1976-01-01), Ryden, Jr.
patent: 4027527 (1977-06-01), Bennett et al.
patent: 4049954 (1977-09-01), Da Costa Vieira et al.
patent: 4099418 (1978-07-01), Bennett et al.
patent: 4254660 (1981-03-01), Prause
patent: 4404853 (1983-09-01), Livingston
patent: 4475399 (1984-10-01), Livingston
patent: 4487072 (1984-12-01), Livingston
patent: 4740146 (1988-04-01), Angelbeck
patent: 5063780 (1991-11-01), Landry et al.
patent: 5156636 (1992-10-01), Kuljis
patent: 5596508 (1997-01-01), Cuffe
patent: 5866819 (1999-02-01), Albu et al.
patent: 6188643 (2001-02-01), Liang et al.
patent: 6343510 (2002-02-01), Neeson et al.
patent: 6634233 (2003-10-01), He
Kuo et al., A novel method for the measurement of acoustic speed; J. Acoust. Soc. Am.; 88 (4); Oct. 1999; p. 1679-1682.
Hsu et al., Simultaneous ultrasonic velocity and sample thickness measurement and application in composites; J. Accoust. Soc. Am.; 92 (2) Pt. 1; Aug. 1992; p. 669-675.
He Ping; Measurement of acoustic dispersion using both transmitted and reflected pulses; J. Acoust. Soc. Am.; Feb. 2000; pp. 801-807; Acoustical Society of America; United States.
He, Ping; Simultaneous measurement of sound velocity and wall thickness of a tube; Ultrasonics; 2001; p. 407-411; 39; Elsevier Science B.V.; United States.
Dinsmore & Shohl LLP
Saint-Surin Jacques M.
Williams Hezron
Wright State University
LandOfFree
Method for determining the wall thickness and the speed of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for determining the wall thickness and the speed of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for determining the wall thickness and the speed of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3374310