Structural member bend radius and shape sensor and measurement apparatus

Structural member bend radius sensor apparatus 90 comprises three fibre Bragg grating (FBG) strain sensors 102 provided within three optical fibres 14, 16, 18 . The optical fibres 14, 16, 18 and the FBGs 102 are embedded within a part-cylindrical shaped carrier member 92 . The fibres 14, 16, 18 are...

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Bibliographic Details
Main Authors ROBERTS RICHARD D.G, PEIRCE IAN, JONES MARTIN P.W
Format Patent
LanguageEnglish
Published 02.03.2006
Subjects
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:Structural member bend radius sensor apparatus 90 comprises three fibre Bragg grating (FBG) strain sensors 102 provided within three optical fibres 14, 16, 18 . The optical fibres 14, 16, 18 and the FBGs 102 are embedded within a part-cylindrical shaped carrier member 92 . The fibres 14, 16, 18 are provided at three spaced locations across the shaped carrier member 92 so that, in use, the three respective FBG strain sensors will be located at three different angular positions around the circumference of the structural member (pipe) 68 . Structural member shape measurement apparatus 100 comprises four bend radius sensor apparatus 90 provided at four bend radius measurement positions along the pipe 68 . The four bend radius sensor apparatus 90 shown share their optical fibres 14, 16, 18 , and a single shaped carrier member 92 . The shape measurement apparatus 100 further comprises FBG interrogation apparatus 104.
Bibliography:Application Number: US20040993952