Crack detection arrangement utilizing optical fibres as reinforcement fibres
First Claim
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1. In an arrangement for detecting cracks within a construction or structure part made of multiple lamina in a compound fashion the improvement comprising:
- at least some of said lamina being made of non-light conducting fibres, being arranged in a particular pattern and being at least partially embedded in synthetic resin;
light conducting fibres included in said lamina and in another regular pattern while taking the place of regular ones of said non-light conducting fibres within said first mentioned particular pattern of fibres, such that plural non-light conducting fibres separate any two of said light conducting fibres extending parallel to said plural non-light conducting fibres, andsaid light conducting fibres thereby constituting also fibre-reinforcement of the structure part.
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Abstract
An arrangement for detecting cracks within a construction or structure part made of multiple lamina in a compound fashion and wherein at least some of said lamina are made of fibres, being at least partially embedded in synthetic resin, includes light conducting fibres in said lamina taking the place of regular ones of said fibres within a pattern of such fibres either as part of the weaving pattern or as particular interposed layer.
83 Citations
7 Claims
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1. In an arrangement for detecting cracks within a construction or structure part made of multiple lamina in a compound fashion the improvement comprising:
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at least some of said lamina being made of non-light conducting fibres, being arranged in a particular pattern and being at least partially embedded in synthetic resin; light conducting fibres included in said lamina and in another regular pattern while taking the place of regular ones of said non-light conducting fibres within said first mentioned particular pattern of fibres, such that plural non-light conducting fibres separate any two of said light conducting fibres extending parallel to said plural non-light conducting fibres, and said light conducting fibres thereby constituting also fibre-reinforcement of the structure part. - View Dependent Claims (2, 3)
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4. In an arrangement for detecting cracks within a construction or structure part made of multiple lamina in a compound fashion the improvement comprising:
a first and a second lamina of regular nonlight conducting fibres constituting two of said lamina, there being a plurality of light conducting fibres interposed between said two lamina as a third, intermediate lamina. - View Dependent Claims (5, 6)
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7. In a construction part made of compound material and including lamina or layers made of fibres in a regular pattern, being composed of nonlight conducting fibres and light conducting fibres regularly interspersed in and being part of said regular pattern, such that plural non-light conducting fibres separate any two of the light conducting fibres that extend parallel to the latter plural non-light conducting fibres, said light conducting fibres constituting a portion of fibre reinforcement as established otherwise by non-light conducting fibres.
Specification