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US 4,603,252 AGranted
Determination of the integrity of part of structural materials
AssigneeMesserschmitt-Boelkow-Blohm GmbH
InventorsSamir Malek, Bernd Hofer
Life of this patent
Estimating the term…
Abstract
Laminated parts of structural material receive as embedment light transmitting fibers, preferably in addition to reinforcing fibers, and light transmission through the light transmitting fibers is monitored for purposes of determining pattern irregularities and formation of cracks.
Claims7
A method for monitoring the integrity of a laminated part of structural material prior to use comprising the steps of:
- including a plurality of light conducting fibers in at least one layer in between adjacent laminas of the part and in a regular pattern;
- and
- determining the regularity of light transmission of said fibers within the part and as resulting from the pattern, under utilization of intense light, at least after completion of the manufacture of the part, so as to obtain a visible indication of any distortion of that pattern on account of shifting of the fibres relative to each other.
Dependencies are inferred from the claim text.