Back to results
US 5,686,661 AGranted
In-situ, real time viscosity measurement of molten materials with laser induced ultrasonics
AssigneeMississippi State University
InventorsJagdish P. Singh, Krishnan Balasubramaniam, R. Daniel Costley, Vimal V. Shah, Christopher Winstead
Life of this patent
Estimating the term…
Abstract
This invention is directed to a method of remotely measuring the viscosity of molten materials such as melt glass, melt alloys, etc. during processing of the material.
Claims14
A method of determining the viscosity of a molten material comprising:
- (a) transmitting ultrasonic waves produced by a pulsed laser through a container containing a molten material;
- (b) detecting the frequency and a wave component selected from the group consisting of amplitude, phase or amplitude and phase of the reflected waves;
- (c) determining the viscosity of said molten material based on detection of said reflected waves
- wherein ultrasonic waves of a frequency of from 100 kHz-30,000 KHz are used.
1 more element
An apparatus for determining the viscosity of a molten material comprising:
- i) a pulsed laser source for producing ultrasonic longitudinal and shear waves at a frequency of from 100 KHz-30,000 KHz, in a molten material:
- ii) a detection system for detecting reflected longitudinal and shear waves from said molten material;
- and
- iii) a processing means for determining a viscosity of a molten material based on detected reflected longitudinal and shear waves.
1 more element
Dependencies are inferred from the claim text.