Gauge for measuring strong shock waves

Details Gauge for measuring strong shock waves Gauge for measuring strong shock waves

1991-11-04

1994-05-24

Rosenberger, Richard A.

Optics: measuring and testing

Material strain analysis

25022711, 385 43, 73774, 73784, G01B 1116, G01B 716

Patent

active

053153642

ABSTRACT:
A shock wave gauge (20) is made from a piece of pure-quartz glass rod (22), or other suitable transparent mineral material. A segment (38) of the rod is uniformly heated above its melting point. The heated segment is then drawn away from a non-heated body segment, forming an optical fiber thread (26). The thread is thinned to a desired size while the rod material is still above its melting point. Upon cooling, the fiber optic thread is cut to a desired length. The body segment (24) of the rod and fiber optic thread (26) drawn therefrom comprise the gauge. The gauge is preferably assembled inside of a housing (34) to protect the thread, with at least one end (24') of the body segment protruding out from the housing. In use, a shock wave impacts the exposed end of the body segment. The pressure of the shock wave causes the temperature of the rod material to rise by an amount proportional to the pressure. The impact of the shock wave also causes a light pulse to be emitted by the rod having a wavelength that is a function of the temperature. The light pulse travels out the formed fiber optic thread and is optically coupled to remote processing apparatus (92), which apparatus analyzes the wavelength of the emitted pulse, and hence provides a measure of the pressure of the shock wave.

REFERENCES:
patent: 4451730 (1984-05-01), Brogardh et al.
patent: 4492121 (1985-01-01), Lehto
patent: 4521070 (1985-06-01), Sottini et al.
patent: 4533243 (1985-08-01), Zhukov et al.
patent: 4798438 (1989-01-01), Moore et al.
patent: 4805461 (1989-02-01), Coupta et al.
patent: 4933545 (1990-06-01), Saaski et al.
patent: 4946250 (1990-08-01), Gonthier et al.
patent: 5071212 (1991-12-01), Mesaki et al.
patent: 5090818 (1992-02-01), Kleinerman
Pound, M., et al., "Yield Determination . . . Strong Shock Algorithm", SAIC/90-7052 (Mar. 1990), 32 pages.
Tan, H., et al., "Shock Induced Polymorphic . . . boron nitride", J. Appl. Phys. 67(1) (Jan. 1990), pp. 217-224.
Boslough, M., et al., "A Sensitive time-resolved . . . 1500K", Rev. Sci. Instr. 60(12) (1989), pp. 3711-3716.
. . "S. Cubed Experiments", Misty Echo Program Document, POR 7268 (May 1988), pp. 88-93.
Veeser, L., et al., "Sensing of high pressure . . . optical fibers", SPIE vol. 838 (1987), pp. 60-68.
Kondo, K., et al., "Shock-induced radiation . . . fused quartz", J. Appl. Phys. 54(8) (1983) pp. 4382-4385.

Affiliated with

Also associated with

Rating

Gauge for measuring strong shock waves does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Gauge for measuring strong shock waves, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gauge for measuring strong shock waves will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1976759