Method and apparatus for determining the acoustic velocity of a

Details Method and apparatus for determining the acoustic velocity of a Method and apparatus for determining the acoustic velocity of a

1980-11-10

1982-12-14

Krass, Errol A.

Boots, shoes, and leggings

73597, G01N 2900

Patent

active

043641148

ABSTRACT:
A method and apparatus for determining by the pulse-echo method the acoustic velocity of a workpiece of known thickness utilize measurement of the transit time of the first rear wall echo signal and that of the second rear wall echo signal. The two transit times are then processed in a microprocessor which also controls the entire measuring cycle. For accurate measurement the transit time is defined as the time interval from the leading edge of the trigger pulse, which triggers the transmit pulse generator, to the time at which the respective echo signal exceeds a preset threshold amplitude.

REFERENCES:
patent: 3690155 (1972-09-01), Eichler
patent: 3746121 (1973-07-01), Niklas
patent: 3848460 (1974-11-01), Bantz et al.
patent: 3994154 (1976-11-01), Niklas et al.
patent: 4003244 (1977-01-01), O'Brien et al.
patent: 4114455 (1978-09-01), Walker
patent: 4200921 (1980-04-01), Buckley
patent: 4307611 (1981-12-01), Opara
Schmidt et al., "Elektronische Laufzeitmessung bei Ultraschalluntersuchungen mit Hilfe des sowjetischen Zahlfrequenzmessers 43-34", Feingeratetechnik, Aug. 1975.

Affiliated with

Also associated with

Rating

Method and apparatus for determining the acoustic velocity of a 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 and apparatus for determining the acoustic velocity of a , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for determining the acoustic velocity of a will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1204043