&lt;title&gt;Transverse strength of composites containing optical fibers&lt;/title&gt;

Carman, Gregory P.; Paul, Clare A.; Sendeckyj, GP

doi:10.1117/12.152769

Cited by 9 publications

(8 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The temperature resistance of materials used in manufacturing optical fibers is not lower than that of CFRP. Finally, small transverse dimensions of optical fibers allow incorporating them into the structure of polymer composites without worsening their strength, or with a relatively small weakening of composites [43][44][45][46][47][48][49][50].…”

Section: Fbgs Embedded Into Cfrp At Cyclic Tensile Loadmentioning

confidence: 99%

Theoretical and Experimental Studies of Structural Health Monitoring of Carbon Composites with Integrated Optical Fiber Sensors Based on Fiber Bragg Gratings

et al. 2021

View full text Add to dashboard Cite

This paper describes research in the field of fiber optic nondestructive testing and structural health monitoring (SHM) of carbon fiber reinforced polymers (CFRP) by the use of integrated optical fiber sensors (OFS) based on fiber Bragg gratings (FBG). Basic mathematical expressions that represent optical SHM of composites are presented. Some new relationships are derived by considering the non-linear character of the FBG-sensor response and the combined effect of temperature and deformation. Both linear and non-linear coefficients of the sensor elements, as well as combined strain-temperature coefficients before and after the sensors are embedded into the composite panels, have been obtained. Experimental results on the strain state of CFRP under static and dynamic loads demonstrate the effectiveness of the proposed non-linear model for evaluating deformation in composites. It is shown that integrated OFS's allow SHM of composite parts when mechanically loaded to failure, and that they can provide the actual level of strain in the composite parts in real time. SHM improves the operational safety of highly loaded and/or critical aerospace structures by providing real-time stress data, which would permit data-based decisions on overload conditions or imminent failure. Additionally, actual stress data from CFRP samples, or from real parts in use, could show whether the design of the parts should be changed to improve safety margins or to reduce weight. KeywordsStructural health monitoring • Nondestructive testing • Carbon composite • Optical fiber sensor • Fiber Bragg grating • Deformation • Strain and temperature measurement B Marina Kuimova

show abstract

Section: Fbgs Embedded Into Cfrp At Cyclic Tensile Loadmentioning

confidence: 99%

Theoretical and Experimental Studies of Structural Health Monitoring of Carbon Composites with Integrated Optical Fiber Sensors Based on Fiber Bragg Gratings

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The physical properties of microphotonic fibers will also improve the ability to embed very large numbers of fibers into composite lay-ups with almost no affect on their structural properties [119]. The bending properties will also enable the fibers to form tighter meshes, without requiring fiber loops with large radii to turn a corner.…”

Section: Future Workmentioning

confidence: 99%

Acousto-Ultrasonic Optical Fiber Sensors: Overview and State-of-the-Art

2008

View full text Add to dashboard Cite

“…Literature addressing the embedment of fiber optic sensors has focused mostly on the former issue of how the sensor affects the host material. Specifically, literature was found that addressed issues of adhesion 1~5 , obtrusivity 6~7 , fibre orientation 8~10 , geometric perturbances 3,11 ,and host material degradation due to fibre embedment 1~3,11~13 .…”

Section: Introductionmentioning

confidence: 99%

Characterization of embedded fiber optic sensors in advanced composite materials for structural health monitoring

Richards

Lee

Piazza

et al. 2004

Smart Structures and Materials 2004: Smart Structures and Integrated Systems

Self Cite

View full text Add to dashboard Cite

This paper presents comprehensive studies on sensor performance of an embedded Extrinsic Fabry Perot Interferometer (EFPI) fiber optic strain sensor in an aerospace grade composite system to support fiber optic smart structures (FOSS) development for Structural Health Monitoring (SHM) System. A major portion of this study is focused on establishing the accuracy of the embedded EFPI sensors in a graphite epoxy composite material system at different stress levels under quasi-static loading conditions. The NASA Dryden calibrated EFPI's were used for accurate measurements. Two collocated surface-mounted strain gages and a calibrated surface-mounted EFPI sensor are used to validate the calibrated embedded EFPI sensor. Experimental results suggest that once calibrated, the embedded and surface-mounted EFPI sensors provide robust, reliable and accurate measurement for values up to ~5,400 higher than sensor's durability limit ~3,000 at 10 6 cycles. This validation provides evidence that the sensing information emanating from FOSS can be used to monitor accurate health information.

show abstract

<title>Transverse strength of composites containing optical fibers</title>

Cited by 9 publications

References 0 publications

Theoretical and Experimental Studies of Structural Health Monitoring of Carbon Composites with Integrated Optical Fiber Sensors Based on Fiber Bragg Gratings

Theoretical and Experimental Studies of Structural Health Monitoring of Carbon Composites with Integrated Optical Fiber Sensors Based on Fiber Bragg Gratings

Acousto-Ultrasonic Optical Fiber Sensors: Overview and State-of-the-Art

Characterization of embedded fiber optic sensors in advanced composite materials for structural health monitoring

Contact Info

Product

Resources

About