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Polarimetric and Bragg Optical Fiber Sensors for Stress Distribution and Temperature Measurements in Composite Materials

100%

Lesiak P., Szeląg M., Mileńko K., Woliński T., Domański A., Jędrzejewski K., Boczkowska A.

Acta Physica Polonica A

2011

vol. 120

issue 4

698-701

Composite structures are made from two or more constituent materials with significantly different physical or chemical properties and they remain separate and distinct in a macroscopic level within the finished structure. This feature allows us for introducing an optical fiber sensors matrix into the composite material. These sensors can demonstrate stress distribution inside a tested material influenced by external tensions. Two types of the optical fiber sensors, placed into one fiber simultaneously, are used as s matrix structure. One of them is based on application of the Bragg grating structure written inside the core of the fiber. Longitudinal stress modifies changes parameters of the Bragg grating and in the same, spectral characteristics of the light transmitted through the fiber. The second one is based on application of highly birefringent fibers which under external stress introduce polarization changes in the output light. These sensors placed into one fiber give a possibility to the measure two external tensions separately.

Polarimetric Optical Fiber Sensors for Dynamic Strain Measurement in Composite Materials

68%

Domański A., Bieda M., Lesiak P., Makowski P., Szeląg M., Poczęsny T., Prokopczuk K., Sobotka P., Chychłowski M., Sierakowski M., Woliński T.

Acta Physica Polonica A

2013

vol. 124

issue 3

399-401

Polarimetric optical fiber sensors possess possibility of temperature compensation, dynamic and integral system of strain monitoring, as well as low cost of photo-detecting elements. In the paper we present results of the sensor analysis with different kinds of birefringent optical fibers leading to an optimal setup for dynamic strain monitoring in composite materials. A great attention is put on parameters of the light sources like coherence and width of spectrum and their influence on dynamics of the strain sensor.

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2 Acta Physica Polonica A

1 2013

1 2011

2 Domański A.

2 Lesiak P.

2 Szeląg M.

2 Woliński T.

1 Bieda M.

1 Boczkowska A.

1 Chychłowski M.

1 Jędrzejewski K.

1 Makowski P.

1 Mileńko K.

1 Poczęsny T.

1 Prokopczuk K.

1 Sierakowski M.

1 Sobotka P.

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Polarimetric and Bragg Optical Fiber Sensors for Stress Distribution and Temperature Measurements in Composite Materials

Polarimetric Optical Fiber Sensors for Dynamic Strain Measurement in Composite Materials