Cure monitoring apparatus having high temperature ultrasonic tra

Details Cure monitoring apparatus having high temperature ultrasonic tra Cure monitoring apparatus having high temperature ultrasonic tra

1988-11-15

1990-05-01

Chiesa, Richard L.

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

264 23, 264 402, 425144, 425149, 4251742, B29C 3502

Patent

active

049214152

ABSTRACT:
An apparatus for monitoring the curing of a fiber reinforced composite plastic which is cured at temperatures of the order of 350.degree. C. and an ultrasonic transducer assembly useful in the apparatus. The transducer assembly comprises a lithium niobate piezoelectric element having anisotropic coefficients of thermal expansion which is mounted on a metal base of the transducer assembly by means of a layer of structured copper. The structured copper is thermo-compression diffusion bonded to the lithium niobate element and to the metal base, and is compliant in a transverse direction to compensate for differential thermal expansions while affording good electrical and thermal conductivity and good acoustic coupling between the lithium niobate element and metal base.

REFERENCES:
patent: H465 (1988-05-01), Brown
patent: 2310612 (1943-02-01), Bremer et al.
patent: 2755662 (1956-07-01), Swengel
patent: 3187207 (1965-06-01), Tomes
patent: 3673442 (1972-06-01), Sonderegger
patent: 3735166 (1973-05-01), Bradley
patent: 4252263 (1981-02-01), Houston
patent: 4266157 (1981-05-01), Peters
patent: 4366713 (1983-01-01), Gilmore et al.
patent: 4392153 (1983-07-01), Glascock, II et al.
patent: 4398117 (1983-08-01), St. Cyr
patent: 4430596 (1984-02-01), Shanley
patent: 4444352 (1984-04-01), Glascock, II et al.
patent: 4455268 (1984-06-01), Hinrichs et al.
patent: 4740146 (1988-04-01), Angelbeck
patent: 4758803 (1988-07-01), Thomas, III
patent: 4773021 (1988-09-01), Harris et al.
patent: 4779452 (1988-10-01), Cohen-Tenoudji et al.
Conradi, M. S. and Miller, J. G., "A Tansmission Oscillator Ultrasonic Spectrometer", Rev. Sci. Instrum., 45, Mar. 1974, pp. 358-360.
Mallett, L. F., "Microcomputer-Based Control of Composite Curing", M.S. Thesis, MIT, Jun. 1985, pp. 2, 25-48, 150, 151.

Affiliated with

Also associated with

Rating

Cure monitoring apparatus having high temperature ultrasonic tra does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cure monitoring apparatus having high temperature ultrasonic tra, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cure monitoring apparatus having high temperature ultrasonic tra will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-826681