Electricity: measuring and testing – Using ionization effects – For analysis of gas – vapor – or particles of matter
Patent
1994-11-10
1996-09-03
Wieder, Kenneth A.
Electricity: measuring and testing
Using ionization effects
For analysis of gas, vapor, or particles of matter
324501, 73116, 340629, 415118, G01N 2762
Patent
active
055527116
ABSTRACT:
This invention is a method for determining when combustion cans or turbine blades are failing in gas turbine engines. It measures the specific ions emitted by hot spots of can and blade material when they have failed or are failing. The invention relies on the electromagnetic energy radiated by ions that are created as combustion gas erodes and ionizes the materials in these hot spots. Acceleration by the earth magnetic field and by acoustic and mechanical forces normally present in combustion machinery cause these charged particles to radiate identifiable electromagnetic emissions. The frequency of the radiation, being a function of the charge and mass of the particles, allows free ions in the exhaust stream to be identified. The device operates by measuring the electromagnetic spectrum and relating detected frequencies to the mass of the ions from can liner and blade materials. The device can be used in fixed installations such as power plants, ships and aircraft. It can be coupled to vibration measurement equipment for additional indications of failure.
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Deegan Thierry
DiMarco William
Brown Glenn W.
Doherty Robert J.
Wieder Kenneth A.
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