Method and apparatus for inspecting honeycomb structures using o

Details Method and apparatus for inspecting honeycomb structures using o Method and apparatus for inspecting honeycomb structures using o

1995-02-16

1996-08-20

Rosenberger, Richard A.

Optics: measuring and testing

Inspection of flaws or impurities

Having predetermined light transmission regions

356241, G01N 2188

Patent

active

055484000

ABSTRACT:
The connection between a support and a honeycomb structure defining a network of parallel cells is inspected by transmitting a beam of light into a first cell of the honeycomb structure by an optical fiber, termed an illuminating fiber, which is connected at one end to a light emitter, and simultaneously detecting any light which leaks from the first cell into an adjacent cell by an optical fiber, termed an observation fiber, which is connected to a converter converting light into an electrical signal.

REFERENCES:
patent: 4319840 (1982-03-01), Kondo et al.
patent: 4560273 (1985-12-01), Ando et al.
patent: 4766325 (1988-08-01), Merkenschlager et al.
patent: 5078005 (1992-01-01), Krempel et al.
patent: 5463462 (1995-10-01), Ohnishi et al.

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